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1.
Vitae (Medellín) ; 30(1): 1-12, 2023-01-22. Ilustraciones
Article in English | LILACS, COLNAL | ID: biblio-1425700

ABSTRACT

Background: Apple pomace is a by-product of the fruit juice industry and comprises peel, seed, stem, and pulp tissues. This by-product contains dietary fibers, polyphenols, vitamins, and organic acids that can benefit human health and have a high potential as a dietary source. Baked products are well-known food types to humans and have a key role in feeding people worldwide. Nowadays, enriched products such as bread, cakes, and biscuits are available in stores. Different studies worldwide have been done about applying the by-products of the fruit juice industry in the bakery. Objective: This research aimed to evaluate apple peel (APE) and pulp (APU) powders separately as a partial substitute for wheat flour in cake production. Methods: Apple peel and pulp separately produced as the residual wastes of juicing were dried for 3 hours in oven (60°C). The dried pulp and peel were ground and sieved using a 60 µm mesh. In this research, chemical and physicochemical analyses were performed according to AACC (Approved Methods of the American Association of Cereal Chemists) and standard food analysis methods. Textural characteristic was analyzed by a texture analyzer (Brookfield CT3-10 Kg, US) equipped with an aluminum probe. Results: Different levels of APE and APU powders (10%, 20%, and 30 %) were used to enrich the cakes. The ash content, fat content, water adsorption capacity, and oil absorption capacity of the wheat flour were lower than APU and APE, whereas the moisture content, protein content, bulk density, and pH showed a reverse trend. Adding APU and APP to the cake formula increased total dietary fiber (TDF) from 4.14 % in the control sample to 27.71 % in the sample with 30 % apple peel powder (APE-30). The highest a* colorimetric parameter (redness) in the cake core was 3.82 in the APE-30 sample. The addition of APE and APU significantly increased the hardness, gumminess, and chewiness of the samples (p<0.05). APE-10 samples could improve the nutritional properties of the cakes without significant reduction (p>0.05) in overall acceptance compared to the control sample. Conclusion: The results of this research demonstrated that a partial replacement of the wheat flour with apple pulp and peel significantly increased the dietary fibers, especially insoluble dietary fiber, compared to the control sample. Apple pulp and apple peel powders had the potential for use in cake making as a good source of dietary fibers


Antecedentes: la pulpa de manzana es un subproducto de la industria del jugo de frutas y se compone de tejidos de cáscara, semillas, tallo y pulpa. Este subproducto contiene fibra dietética, polifenoles, vitaminas y ácidos orgánicos que pueden ser beneficiosos para la salud humana y tienen un alto potencial como fuente dietética. Los productos horneados son de tipos de alimentos bien conocidos para los seres humanos y son clave en la alimentación de las personas de todo el mundo. Hoy en día, los productos enriquecidos como pan, pasteles y galletas están disponibles en las tiendas. Se han hecho diferentes estudios en todo el mundo sobre la aplicación del subproducto de la industria del jugo de frutas en la panadería. Objetivo: El propósito de esta investigación fue evaluar los polvos de cáscara de manzana (APE) y pulpa (APU) como sustituto parcial de la harina de trigo en la producción de pasteles. Métodos: Cáscaras de manzana y pulpa producidas por separado como desechos residuales de jugos, se secaron durante 3 horas en el horno (60 °C). La pulpa seca y la cáscara fueron molidas y tamizadas usando una malla de 60 micras. En esta investigación el análisis químico y físico-químico realizado de acuerdo con el AACC (Aprobado Métodos de la Asociación Americana de Químicos del Cereales) y los métodos estándar de análisis de alimentos. La característica textural fue analizada por el analizador de textura (Brookfield CT3-10 Kg, US) equipado con una sonda de aluminio. Resultados: Se utilizaron diferentes niveles de polvos APE y APU (10, 20 and 30 %) para enriquecer los pasteles. La capacidad de absorción de ceniza, grasa, agua y aceite de la harina de trigo fue menor que la APU y APE, mientras que la humedad, la proteína, la densidad a granel y el pH mostraron una tendencia inversa. Además, APU y APE en fórmula de pastel, aumentaron la fibra dietética total (TDF) de 4.14 % en la muestra de control a 27.71 % en la muestra con un 30 % de polvo de pelar de manzana (APE-30). El parámetro más alto a* colorimétrico en núcleo de pastel fue de 3.82 (enrojecimiento) en la muestra APE-30. La adición de APE y APU aumentó significativamente la dureza, gomosidad y masticabilidad de las muestras (p<0.05). Las muestras de APE-10 podrían mejorar las propiedades nutricionales de los pasteles sin reducción significativa (P<0.05) en aceptación general, en comparación con la muestra de control. Conclusión: Los resultados de este estudio demostraron que un reemplazo parcial de la harina de trigo por pulpa de manzana y cáscara aumentó significativamente la fibra dietética especialmente la insoluble, cuando se compara con la muestra de control. La pulpa en polvo y la cáscara de manzana tienen el potencial de uso en la fabricación de pasteles como una buena fuente de fibra dietética.


Subject(s)
Humans , Dietary Fiber , Malus
2.
Braz. j. biol ; 83: e250505, 2023. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1339347

ABSTRACT

Abstract The South American fruit fly, Anastrepha fraterculus (Wiedemann, 1830) (Diptera: Tephritidae), is an important pest in the subtropical region of Brazil. This insect has tritrophic relation between wild fruits and parasitoids and is associated with apple (Malus domestica Borkh.) orchards adjacent to the Atlantic Forest in Paraná. We thus investigated the degree of infestation of the fruit fly and natural parasitism in wild and cultivated fruits surrounding apple orchards. For this purpose, we collected fruits of Acca sellowiana (Berg.) Burret, Campomanesia xanthocarpa (Mart), Eugenia uniflora L., Eugenia pyriformis Cambessèdes, Psidium cattleianum Sabine, Psidium guajava (L.), Annona neosericea Rainer and Eriobotrya japonica (Thumb) in apple orchards adjacent to the Atlantic Forest located in Campo do Tenente, Lapa and Porto Amazonas counties. In total, we collected 18,289 fruits during four growing years. The occurrence of A. fraterculus depends on the susceptible period of apple fruits. A. sellowiana and P. cattleianum were considered primary fruit fly multipliers and P. guajava was secondary, all occurring after the apple harvest (IS period). The group of parasitoids with A. fraterculus was Aganaspis pelleranoi (Brèthes, 1924) (Hymenoptera: Figitidae), Opius bellus (Gahan, 1930), Doryctobracon areolatus (Szépligeti, 1911) and Doryctobracon brasiliensis (Szépligeti, 1911) (Hymenoptera: Braconidae) all of which are first records in the Atlantic Forest in Paraná. First record of O. bellus occurring in the State of Paraná, as well as, first record of the tritrophic association between host plant A. neosericea, parasitoids D. areolatus and O. bellus and fruit fly A. fraterculus. The host P. cattleianum stood out among the Myrtaceae species in regard to the high diversity of parasitoid species (81% of parasitoids). The total number of Figitidae species (76.5%) was higher than that of Braconidae species. The influence of climatic events in southern Brazil on wild fruit production should be further studied to understand the association of A. fraterculus with the tritrophic relationship.


Resumo Mosca-das-frutas sul-americana, Anastrepha fraterculus (Wiedemann, 1830) (Diptera: Tephritidae), é uma importante praga da região subtropical do Brasil. Este inseto tem relação tritrófico entre frutos silvestres e parasitoides e está associado a pomares de macieiras (Malus domestica Borkh.) adjacentes à Mata Atlântica no Paraná. Assim, investigamos o grau de infestação da mosca-das-frutas e o parasitismo natural em frutas silvestres e cultivadas ao redor de pomares de maçã. Para tanto, foram coletados frutos de Acca sellowiana (Berg.) Burret, Campomanesia xanthocarpa (Mart), Eugenia uniflora L., Eugenia pyriformis Cambessèdes, Psidium cattleianum Sabine, Psidium guajava (L.), Annona neosericea Rainer e Eriobotrya japonica (Thumb) em pomares de maçã adjacentes à Mata Atlântica localizados nos municípios de Campo do Tenente, Lapa e Porto Amazonas. No total, coletamos 18.289 frutos durante quatro anos de cultivo. A ocorrência de A. fraterculus depende do período de suscetibilidade dos frutos da maçã. A. sellowiana e P. cattleianum foram considerados multiplicadores primários de mosca-das-frutas e P. guajava foi secundário, todos ocorrendo após a colheita da maçã (período IS). Os parasitóides a associados a A. fraterculus foram Aganaspis pelleranoi (Brèthes, 1924) (Hymenoptera: Figitidae), Opius bellus (Gahan, 1930), Doryctobracon areolatus (Szépligeti, 1911) e Doryctobracon brasiliensis (Szépligeti, 1911) (Hymenoptera: Braconidae), todos os quais são primeiros registros na Mata Atlântica no Paraná. Primeiro registro de O. bellus ocorrendo no Estado do Paraná, assim como, primeiro registro da associação tritrófica entre o hospedeiro A. neosericea, parasitoides D. areolatus e O. bellus e mosca-das-frutas A. fraterculus. O hospedeiro P. cattleianum se destacou entre as espécies de Myrtaceae pela alta diversidade de parasitóides associados (81% dos parasitóides). O número total de espécies de Figitidae (76,5%) foi superior ao de espécies de Braconidae. A influência de eventos climáticos no sul do Brasil na produção de frutas silvestres deve ser mais estudada para entender a associação de A. fraterculus com a relação tritrófica.


Subject(s)
Animals , Malus , Tephritidae , Hymenoptera , Brazil , Forests
3.
Braz. j. biol ; 83: 1-12, 2023. graf, tab
Article in English | LILACS, VETINDEX | ID: biblio-1468979

ABSTRACT

The South American fruit fly, Anastrepha fraterculus (Wiedemann, 1830) (Diptera: Tephritidae), is an important pest in the subtropical region of Brazil. This insect has tritrophic relation between wild fruits and parasitoids and is associated with apple (Malus domestica Borkh.) orchards adjacent to the Atlantic Forest in Paraná. We thus investigated the degree of infestation of the fruit fly and natural parasitism in wild and cultivated fruits surrounding apple orchards. For this purpose, we collected fruits of Acca sellowiana (Berg.) Burret, Campomanesia xanthocarpa (Mart), Eugenia uniflora L., Eugenia pyriformis Cambessèdes, Psidium cattleianum Sabine, Psidium guajava (L.), Annona neosericea Rainer and Eriobotrya japonica (Thumb) in apple orchards adjacent to the Atlantic Forest located in Campo do Tenente, Lapa and Porto Amazonas counties. In total, we collected 18,289 fruits during four growing years. The occurrence of A. fraterculus depends on the susceptible period of apple fruits. A. sellowiana and P. cattleianum were considered primary fruit fly multipliers and P. guajava was secondary, all occurring after the apple harvest (IS period). The group of parasitoids with A. fraterculus was Aganaspis pelleranoi (Brèthes, 1924) (Hymenoptera: Figitidae), Opius bellus (Gahan, 1930), Doryctobracon areolatus (Szépligeti, 1911) and Doryctobracon brasiliensis (Szépligeti, 1911) (Hymenoptera: Braconidae) all of which are first records in the Atlantic Forest in Paraná. First record of O. bellus occurring in the State of Paraná, as well as, first record of the tritrophic association between host plant A. neosericea, parasitoids D. areolatus and O. bellus and fruit fly A. fraterculus. The host P. cattleianum stood out among the Myrtaceae species in regard to the high diversity of parasitoid species (81% of parasitoids). The total number of Figitidae species (76.5%) was higher [...].


Mosca-das-frutas sul-americana, Anastrepha fraterculus (Wiedemann, 1830) (Diptera: Tephritidae), é uma importante praga da região subtropical do Brasil. Este inseto tem relação tritrófico entre frutos silvestres e parasitoides e está associado a pomares de macieiras (Malus domestica Borkh.) adjacentes à Mata Atlântica no Paraná. Assim, investigamos o grau de infestação da mosca-das-frutas e o parasitismo natural em frutas silvestres e cultivadas ao redor de pomares de maçã. Para tanto, foram coletados frutos de Acca sellowiana (Berg.) Burret, Campomanesia xanthocarpa (Mart), Eugenia uniflora L., Eugenia pyriformis Cambessèdes, Psidium cattleianum Sabine, Psidium guajava (L.), Annona neosericea Rainer e Eriobotrya japonica (Thumb) em pomares de maçã adjacentes à Mata Atlântica localizados nos municípios de Campo do Tenente, Lapa e Porto Amazonas. No total, coletamos 18.289 frutos durante quatro anos de cultivo. A ocorrência de A. fraterculus depende do período de suscetibilidade dos frutos da maçã. A. sellowiana e P. cattleianum foram considerados multiplicadores primários de mosca-das-frutas e P. guajava foi secundário, todos ocorrendo após a colheita da maçã (período IS). Os parasitóides a associados a A. fraterculus foram Aganaspis pelleranoi (Brèthes, 1924) (Hymenoptera: Figitidae), Opius bellus (Gahan, 1930), Doryctobracon areolatus (Szépligeti, 1911) e Doryctobracon brasiliensis (Szépligeti, 1911) (Hymenoptera: Braconidae), todos os quais são primeiros registros na Mata Atlântica no Paraná. Primeiro registro de O. bellus ocorrendo no Estado do Paraná, assim como, primeiro registro da associação tritrófica entre o hospedeiro A. neosericea, parasitoides D. areolatus e O. bellus e mosca-das-frutas A. fraterculus. O hospedeiro P. cattleianum se destacou entre as espécies de Myrtaceae pela alta diversidade de parasitóides associados (81% dos parasitóides). O número total de espécies de Figitidae (76,5%) foi superior [...].


Subject(s)
Animals , Annona , Eriobotrya , Eugenia , Host-Parasite Interactions , Malus , Psidium , Tephritidae/parasitology
4.
Braz. j. biol ; 82: e234780, 2022. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1180735

ABSTRACT

Summer apples are one of the most important plant community in Artvin province located Northeastern part of Turkey. In present study 22 local apple genotypes were characterized by phenological, morphological, biochemical and sensory properties. Harvest date was the main phenological data. Morphological measurements included fruit weight, fruit shape, fruit ground color, fruit over color, fruit over color coverage and fruit firmness, respectively. Sensory measurements were as juiciness and aroma and biochemical characteristics included organic acids, SSC (Soluble Solid Content), vitamin C, total phenolic content and antioxidant capacity. Genotypes exhibited variable harvest dates ranging from 11 July to 13 August and cv. Summered harvested 30 July 2017. The majority of genotypes were harvested before cv. Summered. Fruit weight were also quite variable among genotypes which found to be between 89 g and 132 g, and most of the genotypes had bigger fruits than cv. Summered. Pink, red, yellow and green fruit skin color was evident and main fruit shape were determined as round, conic and oblate among genotypes. ART08-9, ART08-4, ART08-21 and ART08-22 had distinct bigger fruits and ART08-1, ART08-2, ART08-5, ART08-12 and ART08-17 had higher total phenolic content and antioxidant capacity. The results of the study showed significant differences for most of the phenological, morphological, sensory and biochemical characteristics. Thus, the phonological, morphological, sensory and biochemical characteristics of summer apple genotypes were distinguishable and these results suggest that phonological, morphological, sensory and biochemical differences of the summer apple genotypes can be attributed to differences in genetic background of genotypes which placed different groups by PCoA analysis.


As maçãs cultivadas no verão são uma das culturas vegetais mais importantes da província de Artvin, localizada no nordeste da Turquia. No presente estudo, 22 genótipos locais de maçã foram caracterizados quanto às suas propriedades morfológicas, bioquímicas e sensoriais. As características analisadas foram peso do fruto, data da colheita, forma do fruto, coloração da casca, firmeza do fruto, suculência, aroma, teor de ácidos orgânicos e de sólidos solúveis, vitamina C, teor fenólico total e capacidade antioxidante. Os genótipos exibiram datas de colheita que variaram de 11 de julho a 13 de agosto, e a cultivar de verão foi colhida em 30 de julho 2017. A maioria dos genótipos foi colhida antes da cultivar de verão. O peso dos frutos também foi bastante variável entre os genótipos, apresentando entre 89 e 132 g, e a maioria dos genótipos apresentou frutos maiores que a cultivar de verão. As colorações rosa, vermelho, amarelo e verde da casca dos frutos foram as mais evidentes, e a forma principal dos frutos foi determinada como redonda, cônica e oblata entre os genótipos. ART08-9, ART08-4, ART08-21 e ART08-22 apresentaram frutos maiores distintos, e ART08-1, ART08-2, ART08-5, ART08-12 e ART08-17 apresentaram maior conteúdo fenólico total e capacidade antioxidante. Os resultados do estudo mostraram diferenças significativas para a maioria das características morfológicas, sensoriais e bioquímicas. Assim, essas características dos genótipos da maçã cultivadas no verão foram distintos, e esses resultados podem ser atribuídos a diferenças no contexto genético dos genótipos.


Subject(s)
Malus/genetics , Ascorbic Acid , Fruit/genetics , Genotype , Antioxidants
5.
Braz. j. biol ; 82: e256277, 2022. tab, graf, ilus
Article in English | LILACS, VETINDEX | ID: biblio-1364494

ABSTRACT

The wax apple or jambu madu, is a non-climacteric tropical fruit from Myrtaceae family and widely cultivated in South East Asia. The limited availability of good quality seedlings of wax apple is the main problem to development of flourish it's market share in the current fruit industry. Therefore, in order to produce good quality planting materials, a study aimed at optimizing propagation and adventitious rooting technique and survivability of wax apple air layer was conducted. In this study, four different levels of Indole-3-Butyric Acid (IBA) concentration (0, 1000, 1500 and 2000 mg L-1) and three rooting media (sphagnum moss, vermicompost and garden soil) were applied after removal of bark (phloem) on the shoot to determine the effect on rooting and survivability of the wax apple air layer under field conditions. The results showed that the wax apple shoots treated with 2000 mg L-1 IBA produced the significantly higher number of roots, increased length of root, diameter of branch, length of branch, number of leaf and leaf area of air layers. In addition, the highest chlorophyll content and stomatal aperture were recorded in 2000 mg L-1 IBA treatment compared to other treatments including control. Vermicompost medium was better than garden soil and sphagnum moss in respect of rooting and survivability of air layers. The results showed that the combination of 2000 mg L-1 IBA and vermicompost as rooting media give the best combination to root initiation, root number, root length and survival rate (100%) of wax apple air layers. From this study, it can be concluded that 2000 mg L-1 IBA and vermicompost treatment enhance the root initiation, early establishment and survivability of wax apple air layered under field conditions.


A maçã de cera, ou jambu madu, é uma fruta tropical não climatérica da família Myrtaceae e amplamente cultivada no Sudeste Asiático. A disponibilidade limitada de mudas de macieira de boa qualidade é o principal problema para o desenvolvimento de sua participação de mercado na fruticultura atual. Portanto, com o objetivo de produzir materiais de plantio de boa qualidade, foi realizado um estudo visando otimizar a técnica de propagação e enraizamento adventício e a sobrevivência da camada aérea da cera de macieira. Neste estudo, quatro diferentes níveis de concentração de ácido indol-3-butírico (AIB) (0, 1000, 1500 e 2000 mg L-1) e três meios de enraizamento (musgo esfagno, vermicomposto e solo de jardim) foram aplicados após a remoção da casca (floema) na parte aérea para determinar o efeito no enraizamento e capacidade de sobrevivência da camada de ar da macieira em condições de campo. Os resultados mostraram que os brotos de macieira tratados com 2000 mg L-1 de AIB produziram significativamente maior número de raízes, maior comprimento de raiz, diâmetro de galho, comprimento de galho, número de folhas e área foliar das camadas aéreas. Além disso, o maior teor de clorofila e abertura estomática foram registrados no tratamento 2000 mg L-1 IBA em comparação com outros tratamentos, incluindo o controle. O meio de vermicomposto foi melhor do que o solo de jardim e o musgo esfagno em relação ao enraizamento e capacidade de sobrevivência das camadas aéreas. Os resultados mostraram que a combinação de 2000 mg L-1 de AIB e vermicomposto como meio de enraizamento proporciona a melhor combinação para iniciação radicular, número de raízes, comprimento radicular e taxa de sobrevivência (100%) das camadas aéreas de macieira. A partir deste estudo, pode-se concluir que 2.000 mg L-1 de AIB e tratamento com vermicomposto melhoram a iniciação radicular, o estabelecimento precoce e a capacidade de sobrevivência de macieiras em camadas de ar em condições de campo.


Subject(s)
Agricultural Cultivation , Plant Roots/growth & development , Malus/growth & development , Fertilizers
6.
Ciênc. rural (Online) ; 52(10): e20210419, 2022. tab
Article in English | LILACS, VETINDEX | ID: biblio-1364720

ABSTRACT

The use of new rootstocks combined with different training systems have been studied to increase productivity, fruit quality, and reduce costs. Another important factor is the validation of studies under replanting conditions, due to the growing limitation of new areas for planting commercial apple orchards in Brazil. The present study aimed to evaluate the behavior of 'Fuji Suprema' and 'Maxi Gala' apple trees in two training systems grafted on two rootstocks. The study occurred during the seasons 2016/17, 2017/18 and 2018/19, in an orchard located in southern Brazil in an area previously cultivated with apple trees. A randomized block design consisting of a 2x2 factorial was used, with Tall Spindle and Bi-Axis as the training system and 'M.9' and 'G.213' as rootstocks of Fuji Suprema and Maxi Gala cultivars. Variables were evaluated to determine tree vigor, as well as yield and fruit quality characteristics. It was observed that 'G.213' promoted higher vigor for both cultivars as well as the Bi-Axis training system in the Maxi Gala cultivar. The highest yield was observed in Tall Spindle as well as the rootstock 'G.213' in both cultivars. The most significant changes on fruit quality occurred in the Bi-Axis training system, presenting higher intensity of red color as well as 'Maxi Gala' grafted on 'G.213' rootstock.


A utilização de novos porta-enxertos e diferentes sistemas de condução tem sido estudado para aumentar a produtividade, qualidade dos frutos e reduzir custos. Outro fator importante é a validação de estudos em condições de replantio, devido à crescente limitação de novas áreas para o plantio comercial de pomares de macieiras no Brasil. O presente estudo teve como objetivo avaliar o comportamento de macieiras 'Fuji Suprema' e 'Maxi Gala' em dois sistemas de condução enxertados sobre dois porta-enxertos. O estudo ocorreu durante as safras 2016/17, 2017/18 e 2018/19, em um pomar localizado no sul do Brasil, em área previamente cultivada com macieiras. Utilizou-se delineamento de blocos casualizados, consistindo em um fatorial 2x2, sendo Tall Spindle e Bi-Axis como sistemas de condução e 'M.9' e 'G.213' como porta-enxertos das cultivares Fuji Suprema e Maxi Gala. Foram avaliadas variáveis para determinar o comportamento vegetativo, bem como as características de produtividade e qualidade dos frutos. Observou-se que 'G.213' promoveu maior vigor para ambas cultivares, assim como o sistema de condução Bi-Axis na cultivar Maxi Gala. O maior rendimento foi observado nas macieiras conduzidas em Tall Spindle e enxertadas sobre 'G.213' em ambas cultivares. As mudanças mais significativas na qualidade dos frutos ocorreram nas macieiras conduzidas em Bi-Axis, apresentando maior intensidade de coloração vermelha, assim como na macieira 'Maxi Gala' enxertada sobre 'G.213'.


Subject(s)
Malus/growth & development , Malus/genetics , Fruit , Agricultural Cultivation
7.
Braz. j. biol ; 82: 1-10, 2022. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1468438

ABSTRACT

Summer apples are one of the most important plant community in Artvin province located Northeastern part of Turkey. In present study 22 local apple genotypes were characterized by phenological, morphological, biochemical and sensory properties. Harvest date was the main phenological data. Morphological measurements included fruit weight, fruit shape, fruit ground color, fruit over color, fruit over color coverage and fruit firmness, respectively. Sensory measurements were as juiciness and aroma and biochemical characteristics included organic acids, SSC (Soluble Solid Content), vitamin C, total phenolic content and antioxidant capacity. Genotypes exhibited variable harvest dates ranging from 11 July to 13 August and cv. Summered harvested 30 July 2017. The majority of genotypes were harvested before cv. Summered. Fruit weight were also quite variable among genotypes which found to be between 89 g and 132 g, and most of the genotypes had bigger fruits than cv. Summered. Pink, red, yellow and green fruit skin color was evident and main fruit shape were determined as round, conic and oblate among genotypes. ART08-9, ART08-4, ART08-21 and ART08-22 had distinct bigger fruits and ART08-1, ART08-2, ART08-5, ART08-12 and ART08-17 had higher total phenolic content and antioxidant capacity. The results of the study showed significant differences for most of the phenological, morphological, sensory and biochemical characteristics. Thus, the phonological, morphological, sensory and biochemical characteristics of summer apple genotypes were distinguishable and these results suggest that phonological, morphological, sensory and biochemical differences of the summer apple genotypes can be attributed to differences in genetic background of genotypes which placed different groups by PCoA analysis.


As maçãs cultivadas no verão são uma das culturas vegetais mais importantes da província de Artvin, localizada no nordeste da Turquia. No presente estudo, 22 genótipos locais de maçã foram caracterizados quanto às suas propriedades morfológicas, bioquímicas e sensoriais. As características analisadas foram peso do fruto, data da colheita, forma do fruto, coloração da casca, firmeza do fruto, suculência, aroma, teor de ácidos orgânicos e de sólidos solúveis, vitamina C, teor fenólico total e capacidade antioxidante. Os genótipos exibiram datas de colheita que variaram de 11 de julho a 13 de agosto, e a cultivar de verão foi colhida em 30 de julho 2017. A maioria dos genótipos foi colhida antes da cultivar de verão. O peso dos frutos também foi bastante variável entre os genótipos, apresentando entre 89 e 132 g, e a maioria dos genótipos apresentou frutos maiores que a cultivar de verão. As colorações rosa, vermelho, amarelo e verde da casca dos frutos foram as mais evidentes, e a forma principal dos frutos foi determinada como redonda, cônica e oblata entre os genótipos. ART08-9, ART08-4, ART08-21 e ART08-22apresentaram frutos maiores distintos, e ART08-1, ART08-2, ART08-5, ART08-12 e ART08-17 apresentaram maior conteúdo fenólico total e capacidade antioxidante. Os resultados do estudo mostraram diferenças significativas para a maioria das características morfológicas, sensoriais e bioquímicas. Assim, essas características dos genótipos da maçã cultivadas no verão foram distintos, e esses resultados podem ser atribuídos a diferenças no contexto genético dos genótipos.


Subject(s)
Malus/anatomy & histology , Malus/growth & development , Malus/genetics , Malus/chemistry
8.
Rev. méd. Maule ; 36(2): 8-19, dic. 2021. graf
Article in Spanish | LILACS | ID: biblio-1377868

ABSTRACT

Skeletal muscle appears to play a central role in the development of insulin resistance (IR) and consequently the metabolic syndrome due to high-fat diets, obesity, and aging. Recent evidence suggests that some bioactive compounds present in natural products can affect blood glucose, possibly due to interactions between the compounds and glucose transporters. As an objective, to evaluate the effect of the extract of the green bean (PV, Phaseolus vulgaris) and apple of small fruit of thinning (Malus domestica, MAF and MIT extracts) on the incorporation of glucose in C2C12 muscle cells. For this, the cytotoxic effect of the extracts on the cells was determined by detecting formazan. Subsequently, glucose incorporation was determined using a fluorescent glucose analog in cells treated with the extracts. Finally, the effect of the extracts on IL-6 and TNFα production was evaluated by ELISA. Results: PV and MAF decreased 50% of viability at 1000µg / mL while MIT only decreased 10% at that concentration. PV had no significant effect on glucose incorporation and the MAF and MIT extract extracts significantly increased glucose incorporation at 100 µg / mL (13500 and 18000 URF respectively). PV increases the secretion of IL-6 and TNF-α, MAF and MIT only increase the expression of IL-6. Conclusion: These results make it possible to establish natural extracts derived from thinning small fruit apple can be used as a possible treatment for pathologies with high blood glucose levels.


Subject(s)
Humans , Cell Differentiation/physiology , Obesity/epidemiology , Insulin Resistance , Interleukin-6 , Tumor Necrosis Factor-alpha , Phaseolus , Malus , Glucose
9.
Biol. Res ; 54: 1-1, 2021. graf, tab
Article in English | LILACS | ID: biblio-1505786

ABSTRACT

BACKGROUND: Apple is one of the oldest and most valuable fruits. Water restriction is one of the major problems in the production of this fruit in some planting areas. METHODS: Effects of kaolin spray treatments were studied on two early apple cultivars of Golab and Shafi-Abadi under sustained deficit irrigation (SDI) in Alborz province, Iran during 2017 and 2018. Irrigation treatments were 100%, 85%, and 70% ETc and kaolin application were concentrations of 0, 3 and 6% in 2017 and 0, 1.5 and 3% in 2018. RESULTS: Results showed that 85% ETc treatment compared to other irrigation treatments improved apple tree crown volume in 2017. Deficit irrigation treatments significantly reduced fruit weight in both years. Application with 6% kaolin resulted in 33.3% increase in apple fruit weight compared to non-kaolin treatment at 100% ETc irrigation in the first year. Severe deficit irrigation (70% ETc) significantly reduced apple fruit length in both years, but 6% kaolin increased fruit length in both apple cultivars in 2017. Severe deficit irrigation treatment increased the firmness of apple fruit compared to control and mild deficit irrigation (85% ETc) in the first year of experiment. There was no significant difference between irrigation treatments for apple fruit firmness in the second year of experiment. Kaolin treatments of 1.5% and 3% at full irrigation increased the soluble solids content of apple fruit by 36.6% and 44.1% in 2018, respectively. Deficit irrigation treatments significantly increased leaf proline content compared to control in both years. In the first year, kaolin treatments increased leaf proline but in the second year, leaf proline was not significant. Deficit irrigation treatment of 70% ETc and 6% kaolin had the highest amount of glycine betaine content, malondialdehyde and hydrogen peroxide in apple leaf in the first year of experiment. CONCLUSIONS: Severe deficit irrigation stress (70% ETc) increased the activity of nonenzymatic defense systems of apple trees. Kaolin as a drought stress reducing agent can be recommended in apple orchards of Golab and Shafi-Abadi cultivars as an effective and inexpensive method to improve tolerance to drought stress conditions.


Subject(s)
Water , Plant Leaves/chemistry , Malus/growth & development , Fruit/growth & development , Kaolin/pharmacology , Proline/chemistry , Malus/drug effects , Agricultural Irrigation , Fruit/drug effects , Iran
10.
Chinese Journal of Biotechnology ; (12): 2856-2869, 2021.
Article in Chinese | WPRIM | ID: wpr-887848

ABSTRACT

The environmental gas concentration affects the storage period and quality of fruits and vegetables. High concentration CO₂ treating for a long time will cause damage to fruits, However, the specific molecular mechanism is unclear. To analyze the mechanism of CO₂ injury in apple, high-throughput sequencing technology of Illumina Hiseq 4000 and non-targeted metabolism technology were used to analyze the transcriptome sequencing and metabolomics analysis of browning flesh tissue of damage fruit and normal pulp tissue of the control group. A total of 6 332 differentially expressed genes were obtained, including 4 187 up-regulated genes and 2 145 down regulated genes. Functional analysis of the differentially expressed genes confirmed that the occurrence of CO₂ injury in apple was related to redox process, lipid metabolism, hormone signal transduction process and energy metabolism process. Twenty candidate browning genes were successfully screened, among which grxcr1 (md14g1137800) and gpx (md06g1081300) participated in the reactive oxygen species scavenging process, and pld1_ 2 (md15g1125000) and plcd (md07g1221900) participated in phospholipid acid synthesis and affected membrane metabolism. mdh1 (md05g1238800) participated in TCA cycle and affected energy metabolism. A total of 77 differential metabolites were obtained by metabolomic analysis, mainly organic acids, lipids, sugars and polyketones, including 35 metabolites related to browning. The metabolism of flavonoids was involved in the browning process of apple. Compared with the control tissue, the content of flavonoids such as catechin and quercetin decreased significantly in the damaged apple tissue, the antioxidant capacity of cells decreased, the redox state was unbalanced, and the cell structure was destroyed, resulting in browning. The results of this study further enrich the theoretical basis of CO₂ damage, and provide reference for the practical application of high concentration CO₂ preservation technology.


Subject(s)
Carbon Dioxide , Fruit , Gene Expression Regulation, Plant , Malus/genetics , Metabolome , Transcriptome
11.
Biosci. j. (Online) ; 36(4): 1327-1334, 01-06-2020. ilus, tab
Article in English | LILACS | ID: biblio-1147247

ABSTRACT

Popillia japonica (Coleoptera: Scarabaeidae), Japanese beetle, is a polyphagous pest of many crops. In these crops, including apple, it acts primarily as a defoliator, causing economic damages. The objectives were to determine the ability of P. japonica to injury fruits of SweeTango variety apples and the suitability of apple fruits as a food source for this beetle. Popillia japonica was not able to injure the surface of intact fruits, which means that it is not a primary pest for apple fruits. The lifespan of the beetles when fed soybean leaves or apple with exposed endocarp was similar. Observations of the feces of the beetles suggest a potential physiological response due the change of food from soybean leaves to apple fruits. Therefore, we can conclude that the adults should not be considered as primary pests of apple fruits; however, they may act as secondary pests if the endocarp of the fruits is exposed by some other agent.


Popillia japonica (Coleoptera: Scarabaeidae), besouro japonês, é uma praga polífaga de muitas culturas. Nessas culturas, incluindo maçãs, ela atua como um desfolhador, causando danos econômicos. Os objetivos foram determinar a capacidade de P. japonica produzir lesões em maçãs da variedade SweeTango e a adequação da maçã como fonte alimentar para esse besouro. Popillia japonica não foi capaz de lesionar a superfície das maçãs intactas, o que significa que ela não é uma praga primária para maçãs. O tempo de vida desse besouro alimentado com folhas de soja ou maçã com endocarpo exposto foi semelhante. Observações das fezes desse besouro sugere uma potencial resposta fisiológica devido a troca de alimento de folhas de soja para as maçãs. Desta forma, nós podemos concluir que os adultos não devem ser considerados como pragas primárias de maçãs; entretanto elas podem atuar como praga secundária se o endocarpo da fruta for exposto pela ação de outra agente.


Subject(s)
Coleoptera , Malus , Feeding Behavior
12.
Braz. arch. biol. technol ; 63: e20180413, 2020. tab, graf
Article in English | LILACS | ID: biblio-1132167

ABSTRACT

Abstract: Freshly prepared apple tea wine (a combination of tea extract and apple juice) is having yeasty and dull flavour, which needs to be improved to increase the acceptability of this product. Therefore, an attempt has been made for artificial ageing of apple tea wine using different wood chips to improve its physico-chemical, sensory and antimicrobial attributes. Different types of wood chips (Quercus spp., Bombax spp. and Acacia spp.) were added respectively (2.5 g/L to the freshly prepared apple tea wine) and allowed for ageing in carboys for the six months at the room temperature. The influence of each wood species on physico-chemical, sensory and antimicrobial attributes was tested upto 6 months of storage. Storage intervals significantly affected all the physico-chemical attributes (except total sugars, volatile acidity, and antioxidant activity), whereas, the addition of wood chips affected titratable acidity, ethanol, higher alcohols, total phenols, and amino acid. Cluster analysis of the physico-chemical attributes data revealed the same and showed that storage intervals exerted more effect on the physico-chemical and antimicrobial properties of the apple tea wine rather than the wood chips. The antimicrobial activity of 6 months aged wine was low as compared to the fresh wine. Among all the wood chips, apple tea wine aged with Quercus spp. possesses a significantly higher score (according to desirability) than the wine aged with other wood chips and control. In nutshell, apple tea wine matured with Quercus spp. wood chips for 6 months were the best with improved physico-chemical and sensory attributes.


Subject(s)
Humans , Tea/chemistry , Wine/analysis , Malus/chemistry , Juices , Anti-Bacterial Agents/pharmacology , Chemical Phenomena
13.
Braz. arch. biol. technol ; 63: e20190272, 2020. tab, graf
Article in English | LILACS | ID: biblio-1132258

ABSTRACT

Abstract The Apple Germplasm Bank (AGB) of Santa Catarina Agricultural Research and Rural Extension Company - Epagri, AGB-Epagri, is the largest of the genus Malus in Brazil. Twenty-eight main accessions of this bank were virus screened through DAS-ELISA, RT-PCR and IC-RT-PCR during two consecutive reproductive cycles, and each accession showed latent mixed infection by at least two species, among ASGV, ASPV and ACLSV. The combined use of diagnostic methods helped overcome inconsistencies commonly found in apple virus detection and was shown essential for the AGB-Epagri can be safely used as a source of genetic variability and for the exchange of virus-free propagative material.


Subject(s)
Malus/genetics , Malus/virology , Flexiviridae , Seed Bank , Enzyme-Linked Immunosorbent Assay , Reverse Transcriptase Polymerase Chain Reaction , Malus/growth & development
14.
Braz. j. biol ; 79(1): 80-86, Jan.-Mar 2019. tab
Article in English | LILACS | ID: biblio-983997

ABSTRACT

Abstract The development and reproductive potential of Spodoptera eridania (Stoll, 1782) (Lepidoptera, Noctuidae) was compared on natural and artificial diets. Its biology was determined under laboratory conditions, providing an artificial diet, leaves of white clover and the peach cultivar 'Chimarrita' and fruits and leaves of the apple cultivar 'Gala'. Larvae of S. eridania could not complete their biological cycle when fed on apple fruits or peach leaves. The artificial diet provided the shortest development time, with a cycle of 28.5±0.14 days from egg to adult and 37.3% total viability. Apple leaves led to a longer development time from egg to adult (62.8±1.22 days) and lower total viability (23%) and white clover provided the highest total viability (54.3%). The results showed that S. eridania can use white clover and apple leaves to develop normally in apple orchards. The reduction of food sources such as white clover used by the larvae results in infestation and damage to fruits from "test bites".


Resumo O desenvolvimento e o potencial reprodutivo de Spodoptera eridania (Stoll, 1782) (Lepidoptera, Noctuidae) foi comparado em dietas naturais e artificial. A biologia de S. eridania foi determinada em condições de laboratório, comparando-se uma dieta artificial com folhas de trevo branco e de pêssego da cultivar 'Chimarrita' e frutos e folhas de maçã da cultivar 'Gala'. As larvas de S. eridania não puderam completar seu ciclo biológico quando alimentadas com frutas de maçã ou folhas de pêssego. A dieta artificial proporcionou o menor tempo de desenvolvimento, com um ciclo completo de 28,5 ± 0,14 dias de ovo a adulto e 37,3% de viabilidade total. As folhas de maçã levaram maior tempo de desenvolvimento de ovo a adulto (62,8 ± 1,22 dias) e menor viabilidade total (23%). O trevo branco apresentou a maior viabilidade total (54,3%). Os resultados mostraram que S. eridania pode usar trevo branco e folhas de maçã para se desenvolver normalmente em pomares de maçã. A redução de fontes alimentares, como o trevo branco usado pelas larvas, resulta em infestação e danos aos frutos através das "mordidas de prova".


Subject(s)
Animals , Male , Female , Spodoptera/physiology , Trifolium/growth & development , Malus/growth & development , Herbivory , Prunus persica/growth & development , Reproduction , Insect Control , Spodoptera/growth & development , Plant Leaves , Diet , Plant Weeds/growth & development , Fruit , Larva/growth & development
15.
Journal of Korean Medical Science ; : e11-2019.
Article in English | WPRIM | ID: wpr-719582

ABSTRACT

BACKGROUND: Oral allergy syndrome (OAS) is an immunoglobulin E (IgE)-mediated hypersensitivity that occurs frequently in older children with pollen sensitization. This study focused on the clinical characteristics of OAS in children with atopic dermatitis (AD) and birch sensitization. METHOD: s: A total of 186 patients aged 2–18 years with AD and birch sensitization were enrolled in this study between January 2016 and March 2017. Their levels of serum total IgE and birch- and ragweed-specific IgE (sIgE) were measured using ImmunoCAP (Thermo Fisher Scientific, Uppsala, Sweden). Information regarding causative foods and symptoms were obtained via interviews. The patients were divided into 3 groups according to their ages (group 1, 2–6 years; group 2, 7–12 years; and group 3, 13–18 years). RESULTS: Eighty-one of the 186 (43.5%) children with AD who were sensitized to birch pollen were diagnosed as having OAS. The prevalence of OAS in group 1 (the children who had AD and birch sensitization aged 2–6 years) was 36.6%. A greater predominance of men was noted in the non-OAS group (77.1%) compared to the OAS group (60.5%). Apples were the most common causative food in group 2 and 3 while kiwis were the most common cause of OAS in group 1. There was a statistically significant correlation between birch-sIgE levels and the prevalence of OAS (P = 0.000). The cut-off value was 6.77 kUA/L with 55.6% sensitivity and 79.0% specificity (area under the curve 0.653). CONCLUSION: In our study, the prevalence of OAS in children with AD and birch sensitization was 43.5%. Even in the preschool age group, the prevalence of OAS was considerable. Patients with high levels of birch-sIgE were more likely to have OAS. Clinicians should therefore be vigilant about OAS in patients with a high degree of sensitization to birch pollen and even young children if they have birch sensitization.


Subject(s)
Child , Humans , Male , Betula , Dermatitis, Atopic , Hypersensitivity , Immunoglobulin E , Immunoglobulins , Malus , Methods , Pollen , Prevalence , Sensitivity and Specificity
17.
Biol. Res ; 52: 43, 2019. tab, graf
Article in English | LILACS | ID: biblio-1019507

ABSTRACT

BACKGROUND: Drought is one of the main serious problems for agriculture production which its intensity is increasing in many parts of the world, hence, improving water use efficiency is a main goal for sustainable agriculture. RESULTS: Growth indices including relative shoot length growth (SL), relative stem diameter increase (SD) and relative trunk cross sectional area growth (TCSA) measured at the start and end of the season decreased by reducing the irrigation level. Chlorophyll index (CI) was decreased at 70% crop evapotranspiration, however water use efficiency (WUE), leaf and fruit total phenolic content (TPC), and fruit anthocyanin content (AC) were among the traits that showed increment by water deficit stress in both cultivars. Shafi-Abadi cultivar showed to be more sensitive to the water stress than 'Golab' Kaolin treatment improved SL, SD and CI traits, but this increase was statistically significant only for SD at 5% level. Kaolin had no significant effect on yield and water use efficiency (WUE), however, it had negative effect on yield efficiency (YE). Kaolin treatments also significantly increased fruit and leaf TPC (P< 0.01) but had no effect on leaf and fruit total antioxidant activity (AA), as well as fruit anthocyanin content (AC) and soluble proteins (SP). CONCLUSIONS: Irrigation at 85% ETc showed better results than 100% and 70% ETc levels for yield attributes. It seems that the more pronounced effect of kaolin on vegetative traits but not on the fruits, might be attributed to the early ripening and harvest time of the examined cultivars.


Subject(s)
Malus/growth & development , Droughts , Agricultural Irrigation/methods , Fruit/growth & development , Kaolin/administration & dosage , Seasons , Malus/drug effects , Fruit/drug effects
18.
Chinese Journal of Applied Physiology ; (6): 209-214, 2019.
Article in Chinese | WPRIM | ID: wpr-776528

ABSTRACT

OBJECTIVE@#To investigate the effects of apple polyphenols on pulmonary vascular remodeling in rats with pulmonary arterial hypertension and its mechanism.@*METHODS@#Rats were randomly divided into 4 groups:control (Con) group, monocrotaline (MCT) group, apple polyphenol (APP) group,monocrotaline + apple polyphenol (MCT+APP) group. In Con group, rats received a subcutaneous injection of physical saline. In APP group, rats received intraperitoneal injection of 20 mg/kg APP, every other day. In MCT group, rats received a single subcutaneous injection of MCT(60 mg/kg). In MCT+APP group, rats received subcutaneous injection of 60 mg/kg MCT followed by an intraperitoneal injection of 20 mg/kg APP every other day. All the disposal lasted 3 weeks. Then the PAH-relevant indicators, such as mean pulmonary artery pressure(mPAP), pulmonary vascular resistance(PVR), right ventricular hypertrophy index (RVHI) ,wall thickness (WT%) and wall area (WA%) were tested. After that, the inflammatory pathway related indicators, such as interleukin1(IL-1),interleukin1(IL-6), tumor necrosis factor α(TNF-α), cyclooxygenase 2(COX-2) and myeloperoxidase(MPO) in pulmonary tissue and free intracellular Ca in pulmonary smooth muscle cell(PASMC), content of eNOS and NO in endothelial cells were determined.@*RESULTS@#Compared with the control group, the levels of mPAP, PVR, RVHI, WA%, WT%, and IL-1, IL-6, TNF-α, COX-2, MPO in tissue and the expression of Ca in PASMC of MCT group were increased significantly, while the contents of eNOS and NO in endothelial cells were decreased significantly (P<0.05). Compared with the MCT group, the apple polyphenol treatment could improve the above mentioned situation, and the COX-2 and Ca indicators of the apple polyphenol treatment group were decreased significantly (P<0.05).@*CONCLUSION@#MCT can increase COX-2 expression and intracellular Ca in pulmonary artery smooth muscle cells, decrease the contents of eNOS and NO in endothelial cells, while apple polyphenols can significantly inhibit these effects.


Subject(s)
Animals , Rats , Calcium , Metabolism , Cyclooxygenase 2 , Metabolism , Cytokines , Metabolism , Malus , Chemistry , Monocrotaline , Nitric Oxide , Metabolism , Nitric Oxide Synthase Type III , Metabolism , Polyphenols , Pharmacology , Pulmonary Artery , Pathology , Random Allocation , Vascular Remodeling
19.
Rev. argent. microbiol ; 50(1): 3-11, mar. 2018.
Article in English | LILACS | ID: biblio-958024

ABSTRACT

The purpose of this study was to analyze the response of different initial contamination levels of Alicydobadllus acidoterrestris ATCC 49025 spores in apple juice as affected by pulsed light treatment (PL, batch mode, xenon lamp, 3pulses/s, 0-71.6 J/cm²). Biphasic and Weibull frequency distribution models were used to characterize the relationship between inoculum size and treatment time with the reductions achieved after PL exposure. Additionally, a second order polynomial model was computed to relate required PL processing time to inoculum size and requested log reductions. PL treatment caused up to 3.0-3.5 log reductions, depending on the initial inoculum size. Inactivation curves corresponding to PL-treated samples were adequately characterized by both Weibull and biphasic models (R²d j 94-96%), and revealed that lower initial inoculum sizes were associated with higher inactivation rates. According to the polynomial model, the predicted time for PL treatment increased exponentially with inoculum size.


El objetivo del presente trabajo fue evaluar la influencia de la concentración de esporas de Alicyclobacillus acidoterrestris ATCC 49025 en la respuesta de inactivación por acción de la luz pulsada (modo estanco, lámpara de xenón, 3 pulsos/s, 0-71,6 J/cm²) en jugo de manzana comercial. Para caracterizar la relación existente entre la concentración de esporas y el tiempo de tratamiento con las reducciones logarítmicas alcanzadas luego de la exposición a la luz pulsada (LP), se aplicaron 2 modelos: el de Weibull y el bifásico. Adicionalmente, se estimó la relación entre el tiempo de tratamiento con LP y la concentración inicial de inoculo en el jugo con las reducciones logarítmicas logradas mediante regresión múltiple y la metodología de superficie de respuesta (MSR). La inactivación por LP provocó entre 3 y 3,5 reducciones logarítmicas, según la concentración inicial de esporas. Las curvas de inactivación fueron adecuadamente caracterizadas por los modelos matemáticos propuestos (Restado = 94-96%). El análisis por MSR permitió predecir un aumento exponencial del tiempo de tratamiento requerido conforme se incrementa el nivel de contaminación inicial.


Subject(s)
Spores, Bacterial , Beverages , Malus , Alicyclobacillus , Food Contamination , Food Microbiology
20.
Allergy, Asthma & Immunology Research ; : 420-424, 2018.
Article in English | WPRIM | ID: wpr-716001

ABSTRACT

The major apple allergen Mal d 1 cross-reacts with the homologous birch pollen allergen Bet v 1 and causes immunoglobulin E (IgE)-mediated immediate-type allergic reactions. In some patients, delayed-type hypersensitivity to apples may develop within 72 hours without evidence of specific IgE or a positive skin prick test (SPT). The aim of the study was to evaluate the concomitance of delayed-type hypersensitivity reactions and immediate IgE-mediated reactions against high- and low-allergenic apple cultivars in patients with birch pollen allergy. Data were obtained from 45 adults with clinical symptoms of birch pollen allergy. Patients were exposed to apple pulp via atopy patch tests (APTs) and SPTs. Levels of IgE specific to Bet v 1 and Mal d 1 were measured with a radioallergosorbent test. Patients allergic to birch pollen showed the highest rate of positive SPT responses to Golden Delicious apples and the lowest rate to low-allergenic cultivar Grey French Reinette. Among these patients, 9% developed delayed hypersensitivity reactions to either Golden Delicious or Grey French Reinette apples; these reactions manifested clinically as erythema with papules (class ++). Fifty percent of APT-positive patients were concomitantly SPT-negative. Here, we show for the first time the clinical relevance of T cell-driven allergic reactions to apples. APTs may reveal type IV sensitization in patients who are negative for the corresponding type I sensitization tests. Thus, utilization of the APT procedure with fresh apple appears to be a valuable tool for the diagnosis of apple allergy and may improve the accuracy of food allergy diagnoses.


Subject(s)
Adult , Humans , Betula , Diagnosis , Erythema , Food Hypersensitivity , Hypersensitivity , Hypersensitivity, Delayed , Immunoglobulin E , Immunoglobulins , Incidence , Malus , Patch Tests , Pollen , Radioallergosorbent Test , Rhinitis, Allergic, Seasonal , Skin
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