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1.
Esc. Anna Nery Rev. Enferm ; 26: e20210182, 2022.
Article in Portuguese | LILACS, BDENF | ID: biblio-1350746

ABSTRACT

Resumo Objetivo descrever as contribuições terapêuticas da utilização de tecnologias não invasivas de cuidado, oferecidas por enfermeiras obstétricas, durante o trabalho de parto. Método estudo qualitativo e descritivo, com oito enfermeiras obstétricas da casa de parto do Rio de Janeiro. Os dados foram coletados de setembro a dezembro de 2018, através de entrevistas semiestruturadas, e submetidos à técnica de análise temática. Resultados para aliviar a dor e promover relaxamento, recorrem ao estímulo à participação do acompanhante e à respiração consciente, à aplicação da massagem, à promoção do ambiente acolhedor e ao uso da água morna e dos óleos essenciais. Para ativar o trabalho de parto, auxiliar na descida da apresentação e correção do posicionamento fetal, incentivam posicionamentos verticalizados e movimentos corporais, com alguns instrumentos. Conclusões e implicações para a prática tecnologias não invasivas de cuidado possuem contribuições terapêuticas e conformam um cuidado desmedicalizado, respeitoso e centrado na mulher, que promove a autonomia feminina.


Resumen Objetivo describir las contribuciones terapéuticas de la utilización de tecnologías de atención no invasivas que ofrecen las enfermeras obstétricas durante el trabajo de parto. Método estudio cualitativo y descriptivo, con ocho enfermeras obstétricas de una casa de partos de Río de Janeiro. Los datos fueron recolectados de septiembre a diciembre de 2018, a través de entrevistas semiestructuradas, y sometidos a la técnica de análisis temático. Resultados para aliviar el dolor y favorecer la relajación, se recurre a fomentar la participación del acompañante y la respiración consciente, la aplicación de masajes, la promoción de un ambiente acogedor y el uso de agua tibia y aceites esenciales. Para activar el trabajo de parto, facilitan en el descenso de la presentación y corrección del posicionamiento fetal, fomentan las posiciones verticales y los movimientos corporales, con algunos instrumentos. Conclusiones e implicaciones para la práctica las tecnologías de atención no invasiva tienen aportes terapéuticos y conforman un cuidado desmedicalizado, respetuoso y centrado en la mujer que promueve la autonomía femenina.


Abstract Objective to describe the therapeutics contributions of the use of non-invasive care technologies offered by obstetric nurses during labor. Method a qualitative and descriptive study, with eight obstetric nurses from a birthing center in Rio de Janeiro. Data were collected from September to December 2018, through semi-structured interviews, and subjected to thematic analysis technique. Results to relieve pain and promote relaxation, they resort to encouraging the companion's participation and conscious breathing, the application of massage, the promotion of a supportive environment and the use of warm water and essential oils. To activate labor, assist in descending the presentation and correction of fetal positioning, they encourage vertical positioning and body movements, with some instruments. Conclusions and implications for practice non-invasive care technologies have therapeutic contributions and form a not medicalized, respectful and women-centered care that promotes female autonomy.


Subject(s)
Humans , Female , Pregnancy , Adult , Middle Aged , Labor, Obstetric , Labor Pain/nursing , Humanization of Assistance , Nurse Midwives , Nursing Care , Oils, Volatile/therapeutic use , Walking , Aromatherapy/nursing , Personal Autonomy , Qualitative Research , Labor Pain/therapy , Hydrotherapy/nursing , Massage/nursing , Music Therapy
2.
Braz. j. oral sci ; 20: e210219, jan.-dez. 2021. ilus
Article in English | LILACS, BBO | ID: biblio-1253954

ABSTRACT

Aim: This study evaluated the chemical composition of Lippia thymoides (Lt) essential oil and its antimicrobial activity against fungal strains of Candida albicans (Ca) and Gram-negative bacteria Prevotella intermedia (Pi) and Fusobacterium nucleatum (Fn). Methods: Lt essential oil was obtained by hydrodistillation apparatus with a modified Clevenger extension. The chemical analysis was analyzed by gas phase chromatography and mass spectrometry on Shimadzu QP 2010 plus. Sample sensitivity evaluation was performed by ABHb-inoculum and culture plates were developed with triphenyltetrazolium chloride, also Fn and Pi samples analysis were in anaerobic environment and Ca sample analysis was performed in aerobic environment. The minimum inhibitory concentration (CIM) was determinated by microdilution in eppendorfs tubes. Results: The chemical analysis showed that Thymol (59,91%) is the main compound found in Lt essential oil, also other antifungal and antimicrobial agents were present γ-terpinene (8.16%), p-cymene (7.29%) and ß-caryophyllene (4.49%), Thymol is a central ingredient of many medicinal plants and has a potent fungicidal, bactericidal and antioxidant activity, it has been previously shown to have anti-inflammatory activity against Periodontal Disease (PD) cause can reduces prostanoids, interleukins, leukotrienes levels in periodontium. CIM result Pi was 6.5 µg/mL, Fn was 1.5 µg/mL and Ca was 0.19 µg/mL. Conclusion: The antimicrobial activity of L. thymoides, through the compound Thymol, has been shown promising potential against gram-negative periodontopathogenic bacteria and fungi whose therapeutic arsenal is still very restricted


Subject(s)
Periodontitis , Oils, Volatile , Plant Extracts , Lippia , Microbiota , Antifungal Agents
3.
Braz. j. oral sci ; 20: e213867, jan.-dez. 2021. ilus
Article in English | LILACS, BBO | ID: biblio-1254427

ABSTRACT

Aim: This study aimed to compare the microbiological potential and gustatory perception of essential oils (EO) mouthrinses containing and not containing alcohol. Methods: Twenty healthy adult volunteers rinsed with 10mL of the following test solutions: EO with alcohol, EO without alcohol, or a control solution (saline solution with mint essence). A washout period of at least seven days was adopted after a single-use protocol of the respective solution. All participants used all three tested substances. Antimicrobial potential was assessed by counting salivary total viable bacteria both before and after each rinse. Gustatory perception was evaluated using the Visual Analogue Scale (VAS). Multiple comparisons were performed with the Wilcoxon test, using Bonferroni correction. Results: Both EO solutions presented a higher antimicrobial potential in comparison to the control solution (p<0.017). However, no significant difference in antimicrobial potential was observed between EO containing or not containing alcohol (p=0.218). VAS of EO with alcohol (median: 2.7) was similar to control solution (median: 1.6) (p=0.287). A better gustatory perception was observed of the EO without alcohol (median 7.6) when compared to the control solution (p<0.0001). When EO groups were compared, EO without alcohol also demonstrated a significantly better gustatory perception (p=0.001). Conclusion: Mouthrinse containing EO without alcohol presented a better taste perception when compared to the EO with alcohol, but no difference was observed in the antimicrobial potential of both EO solutions after a single rinse protocol


Subject(s)
Humans , Male , Female , Bacteria , Oils, Volatile , Alcohols , Taste Perception , Mouthwashes
4.
Rev. cuba. invest. bioméd ; 40(2): e1104, 2021. tab, graf
Article in Spanish | LILACS, CUMED | ID: biblio-1347458

ABSTRACT

Introducción: Las plantas medicinales han demostrado poseer propiedades antibacterianas para el control de la periodontitis. Objetivo: Determinar la actividad antibacteriana frente a Porphyromonas gingivalis ATCC 33277 de un gel experimental compuesto por aceite esencial de Eucalyptus globulus Labill. Métodos: Se realizó un estudio experimental in vitro. Se empleó el programa EPi InfoTM para el cálculo de las repeticiones. El aceite esencial se obtuvo por el método de arrastre de vapor; se identificó su composición química por cromatografía de gases acoplada a espectrometría de masas. Se evaluó la concentración mínima inhibitoria (CMI) y concentración mínima bactericida (CMB). Se realizó un ensayo de difusión en Agar para medir los halos de inhibición del gel experimental al 4,46 por ciento frente a P. gingivalis, la comparación con clorhexidina al 0,12 por ciento se evaluó con la prueba U de Mann-Whitney. Se adoptó un nivel de significancia del 5 por ciento . Resultados: Se identificaron 11 constituyentes en el aceite esencial, los principales componentes químicos fueron 3-heptadecene, (Z)- (36,13 por ciento ), 1-tridecene (14,7 por ciento ) y 1,8-cineole (9,72 por ciento ). La CMI del aceite esencial fue 36,195 mg/mL y la CMB fue 39,114 mg/mL. Los halos de inhibición del gel experimental de P. gingivalis fueron 25,533 mm ± 0,960. mm. Se observaron diferencias estadísticamente significativas frente a clorhexidina al 0,12 por ciento (23,282 ± 0,345) (p < 0,05). Conclusiones: El gel experimental al 4,46 por ciento compuesto por aceite esencial de Eucalyptus globulus Labill presentó una actividad antibacteriana importante frente a Porphyromonas gingivalis ATCC 33277(AU)


Introduction: Medicinal plants have proved to have antibacterial properties for the control of periodontitis. Objective: Determine the antibacterial activity against Porphyromonas gingivalis ATCC 33277 of an experimental gel composed of essential Eucalyptus globulus Labill oil. Methods: An in vitro experimental study was conducted. The software EPi InfoTM was used to estimate the repetitions. The essential oil was obtained by steam entrainment, and its chemical composition was determined by gas chromatography / mass spectrometry. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were also evaluated. An agar diffusion test was performed to measure the inhibition haloes of the 4.46 percent experimental gel against P. gingivalis. Comparison with 0.12 percent chlorhexidine was evaluated with the Mann-Whitney U test. A 5 percent significance level was adopted. Results: A total 11 constituents were identified in the essential oil. The main chemical components were 3-Heptadecene, (Z)- (36.13 percent), 1-Tridecene (14.7 percentand 1,8-cineole (9.72 percent). MIC of the essential oil was 36.195 mg/ml, whereas MBC was 39.114 mg/ml. The inhibition haloes of the experimental P. gingivalis gel were 25.533 mm ± 0.960 mm. Statistically significant differences were observed versus 0.12 percent chlorhexidine (23.282 ± 0.345) (p < 0.05). Conclusions: The 4.46 percent experimental gel composed of Eucalyptus globulus Labill essential oil displayed considerable antibacterial activity against Porphyromonas gingivalis ATCC 33277(AU)


Subject(s)
Humans , Male , Female , Periodontitis , Oils, Volatile , Chlorhexidine , Mass Spectrometry/methods , In Vitro Techniques , Microbial Sensitivity Tests , Chromatography, Gas/methods , Anti-Bacterial Agents/therapeutic use
5.
Bol. latinoam. Caribe plantas med. aromát ; 20(3): 215-225, may. 2021. ilus, tab
Article in English | LILACS | ID: biblio-1342813

ABSTRACT

This review describes the geographical distribution, botanical data, popular use, chemical composition, pharmacological activities and genetic aspects related to Eugenia luschnathiana, a native Brazilian plant popularly known as "bay pitomba". E. luschnathiana leaves are characterized morphologically by the presence of a petiole, an attenuated base, acuminated apex, elliptical shape, and parallel venation. The major chemical compounds found in E. luschnathiana are sesquiterpenes. Literature reports showed that E. luschnathiana extracts have antioxidant properties and antimicrobial activity against Gram-negative and Gram-positive bacteria. The extractsfrom the leaf, fruit and stem, and a concentrated residual solution of its essential oil, displayed negligible toxicity. Lastly, a cytogenetic analysis indicated that some markers can be used for the study of genetic diversity, population structure, and genetic improvements. The information available on E. luschnathiana supports the hypothesis that this plant may be a source of compounds with promising pharmacological activity.


Esta revisión describe la distribución geográfica, datos botánicos, uso popular, composición química, actividad farmacológica y el análisis genético de Eugenia luschnathiana, una planta originaria del Brasil conocida popularmente como "pitomba da baía". Las hojas de E. luschnathiana se caracterizan por la presencia de pecíolo, base atenuada, ápice acuminado, forma elíptica y venación paralela. Su composición química presenta mayormente sesquiterpenos. Los informes en la literatura muestran que los extractos de E. luschnathiana presentan propiedades antioxidantes y actividad antimicrobiana contra las bacterias Gram-negativas y Gram-positivas. Los extractos de la hoja, fruto y tallo, y una solución residual concentrada del aceite esencial, presentaron baja toxicidad. Por último, un análisis citogenético indicó que algunos marcadores pueden utilizarse para estudios de diversidad genética, estructura poblacional y mejoramiento genético. Las informaciones disponibles acerca de E. luschnathiana proponen la hipótesis de que esta planta puede ser una fuente de compuestos con actividad farmacológica prometedora.


Subject(s)
Oils, Volatile/pharmacology , Plant Extracts/pharmacology , Eugenia/chemistry , Anti-Infective Agents/pharmacology , Terpenes/analysis , Bacteria/drug effects , Oils, Volatile/chemistry , Plant Extracts/genetics , Plant Extracts/chemistry , Plant Leaves/chemistry , Eugenia/genetics , Medicine, Traditional , Anti-Infective Agents/chemistry
6.
Bol. latinoam. Caribe plantas med. aromát ; 20(3): 244-259, may. 2021. tab, ilus
Article in English | LILACS | ID: biblio-1342818

ABSTRACT

Essential oils from the leaves and stems of Croton adenocalyx, C. grewioides, C. heliotropiifoliusand C. blanchetianus obtained through hydrodistillation were analyzed by GC-MS. We then investigated the lethal and sublethal effects of the Croton oils and 15 major constituents against Tetranychus urticae. ß-Caryophyllene was the major component in the leaf and stem oils from C. heliotropiifolius and C. adenocalyx. Spathulenol and (E)-anethole were the major constituents identified in the leaf and stem oils of C. blanchetianus and C. grewioides, respectively. The oil with the greatest lethal and sublethal effects was those from C. adenocalyx. Among the constituents ß-caryophyllene and spatulenol were the most toxic to the mite, where as eugenol and methyl eugenol were the most repellent. The toxicity and repellency of the Croton oils, particularly the oils from C. adenocalyx, demonstrate that these oils constitute a promising alternative to synthetic acaricides for use in the control of T. urticae.


Los aceites esenciales de las hojas y tallos de Croton adenocalyx, C. growioides, C. heliotropiifolius y C. blanchetianus obtenidos mediante hidrodestilación fueron analizados a través de GC-MS. Se investigaron los efectos letales y subletales de los aceites de Croton y 15 componentes principales contra Tetranychus urticae. El ß-cariofileno fue el componente principal en los aceites de hojas y tallos de C. heliotropiifolius y C. adenocalyx. El espatulenol y el (E)-anetol fueron los principales componentes identificados en los aceites de hojas y tallos de C. blanchetianus y C. growioides, respectivamente. El aceite con los mayores efectos letales y subletales fue el de C. adenocalyx. Entre los componentes, el ß-cariofileno y el espatulenol fueron los más tóxicos para el ácaro, mientras que el eugenol y el metil eugenol fueron los más repelentes. La toxicidad y la repelencia de los aceites de Croton, particularmente los aceites de C. adenocalyx, demuestran que estos aceites constituyen una alternativa prometedora respecto a los acaricidas sintéticos para uso en el control de T. urticae.


Subject(s)
Animals , Oils, Volatile/pharmacology , Croton/chemistry , Tetranychidae/drug effects , Acaricides/pharmacology , Terpenes/analysis , Oils, Volatile/chemistry , Chromatography, Gas/methods , Plant Leaves , Acaricides/chemistry
7.
Bol. latinoam. Caribe plantas med. aromát ; 20(3): 260-269, may. 2021. tab
Article in English | LILACS | ID: biblio-1342820

ABSTRACT

The aim of this study was to undertake a screening experiment on essential oils (EO) of Myrcia lundiana, Ocimum basilicum and Lippia alba against six food-spoiling pathogenic bacteria. Seventy-two (72) samples were initially analyzed fo antimicrobial activity based on the agar diffusion test. The minimum inhibitory (MIC) and bactericidal (MBC) concentrations were determined for the 12 samples which showed greatest antimicrobial potential in this stage. Two samples of L. alba, three samples of M. lundiana and seven samples of O. basilicum showed a MIC of 0.12-125 µL/mL for the six tested bacteria. Of these, the EO of O. basilicum cultivar Maria Bonita stood out with the lowest MIC and MBC. Thus, a mixture simulating this essential oil was prepared from commercial standards of the compounds (±)-linalool, geraniol and 1,8-cineole. Significantly higher MIC and MBC were detected in the simulation compared to the respective EO, suggesting a synergistic effect between compounds.


El objetivo de este estudio fue realizar un experimento de detección en aceites esenciales (AE) de Myrcia lundiana, Ocimum basilicum y Lippia alba contra seis bacterias patógenas que estropean los alimentos. Setenta y dos (72) muestras fueron analizadas inicialmente para la actividad antimicrobiana basada en la prueba de difusión en agar. Se determinaron las concentraciones mínimas inhibitoria (CMI) y bactericida (CMB) para las 12 muestras que mostraron el mayor potencial antimicrobiano en esta etapa. Dos muestras de L. alba, tres muestras de M. lundiana y siete muestras de O. basilicum mostraron un CMI de 0.12-125 µL/mL para las seis bacterias analizadas. De estos, el AE de O. basilicum cultivar Maria Bonita se destacó con el CMI y CMB más bajos. Por lo tanto, se preparó una mezcla que simula este aceite esencial a partir de los estándares comerciales de los compuestos de (±)-linalol, geraniol y 1,8-cineol. Se detectaron CMI y CMB significativamente más altos en la simulación en comparación con el AE respectivo, lo que sugiere un efecto sinérgico entre los compuestos.


Subject(s)
Bacteria/drug effects , Oils, Volatile/pharmacology , Ocimum basilicum/chemistry , Myrtaceae/chemistry , Lippia/chemistry , Anti-Bacterial Agents/pharmacology , Sesquiterpenes/analysis , Oils, Volatile/chemistry , Microbial Sensitivity Tests , Food , Anti-Bacterial Agents/chemistry
8.
Arq. bras. med. vet. zootec. (Online) ; 73(1): 82-90, Jan.-Feb. 2021. tab, graf
Article in English | ID: biblio-1153042

ABSTRACT

Essential oils (EO) such as carvacrol represent a wide range of mainly volatile aromatic plant compounds which hold antioxidant, antibacterial and antifungal potential, in addition to other properties of interest to animal health, such as the ability to modulate the microbiome. Current horse care commonly involves an intensive management system with an excessive use of concentrated feed, which can lead to severe digestive and metabolic disorders. Studies with EO in horses are limited, but the use of carvacrol essential oil (CEO) can promote benefits in microbial fermentation. The objective was to investigate the effect of different quantities of CEO on the apparent total digestibility of nutrients, microbial profile in the feces and postprandial blood glucose and insulin response when added to the equine diet. Eight Mini-Horse geldings were used (42±6 months; 135±15 kg BW) and fed with a proportion of 60% concentrate and 40% grass hay. The treatments were: 0, 100, 200 and 300 ppm of CEO. The addition of CEO up to 300 ppm did not influence the apparent digestibility of nutrients or the postprandial plasma glucose and insulin response. The use of CEO maintained the fermentative digestive health of horses fed with concentrate diets.(AU)


Os óleos essenciais (EO), como o carvacrol, são descritos por representarem ampla gama de compostos principalmente voláteis de plantas aromáticas, com potencial antioxidante, antibacteriano, antifúngico, entre outras propriedades de interesse para a saúde animal, como a modulação do microbioma. Atualmente, os cavalos são submetidos a manejo intensivo, com uso excessivo de ração concentrada, o que pode causar graves distúrbios digestivos e metabólicos. Em cavalos, estudos com EO são limitados, mas o uso de óleo essencial de carvacrol (CEO) poderia promover benefícios na fermentação microbiana. O objetivo da presente pesquisa foi investigar o efeito de diferentes quantidades de óleo essencial de carvacrol, adicionadas à dieta de equinos, sobre a digestibilidade aparente total de nutrientes, o perfil microbiano por meio das fezes e a resposta sanguínea pós-prandial de glicose e insulina. Foram utilizados oito cavalos castrados, da raça Mini-Horse (42±6 meses), 135±15kg PV, alimentados na proporção de 60% concentrado e 40% feno de capim. Os tratamentos foram: 0, 100, 200 e 300ppm de CEO. A adição de CEO até 300ppm não influencia a digestibilidade aparente dos nutrientes e a resposta de glicose e insulina plasmática pós-prandial. O uso de EO demonstra manter a saúde digestiva fermentativa quando os cavalos são alimentados com dieta rica em concentrado.(AU)


Subject(s)
Animals , Oils, Volatile/therapeutic use , Digestion/drug effects , Glucose , Horses/blood , Insulin/blood , Dietary Supplements/analysis , Monoterpenes
9.
Braz. j. med. biol. res ; 54(3): e9422, 2021. tab, graf
Article in English | LILACS | ID: biblio-1153527

ABSTRACT

Hyptis crenata, commonly known as "salva-do-Marajó", "hortelã-do-campo", and "hortelãzinha", is used in folk medicine in Northeast Brazil as tea or infusion to treat inflammatory diseases. Due to the pharmacological efficacy and the low toxicity of the essential oil of Hyptis crenata (EOHc), we decided to investigate the EOHc antiedematogenic effect in experimental models of inflammation. EOHc was administrated orally at doses of 10-300 mg/kg to male Swiss albino mice. Paw edema was induced by subcutaneous injection in the right hind paw of inflammatory stimuli (carrageenan, dextran, histamine, serotonin, and bradykinin) 60 min after administration of EOHc. EOHc significantly inhibited the induced edema. The inhibitory effect of EOHc on dextran-induced edema extended throughout the experimental time. For the 30, 100, and 300 mg/kg doses of EOHc, the inhibition was of 40.28±1.70, 51.18±2.69, and 59.24±2.13%, respectively. The EOHc inhibitory effect on carrageenan-induced edema started at 10 mg/kg at the second hour (h) and was maintained throughout the observation period. At 30, 100, and 300 mg/kg doses the inhibition started earlier, from 30 min. At the edema peak of 180 min, 56, 76, and 82% inhibition was observed for 30, 100, and 300 mg/kg doses, respectively. Additionally, the effect of EOHc on carrageenan-induced paw edema was influenced by the time of administration. The EOHc also inhibited myeloperoxidase activity. In conclusion, the EOHc showed a potent effect, both preventing and reversing the edema, consistent with its anti-inflammatory use in folk medicine.


Subject(s)
Animals , Male , Rabbits , Oils, Volatile/therapeutic use , Hyptis/chemistry , Edema/drug therapy , Inflammation/drug therapy , Brazil , Plant Extracts/therapeutic use , Carrageenan , Edema/chemically induced , Inflammation/chemically induced
10.
Article in English | LILACS | ID: biblio-1284447

ABSTRACT

This paper described the chemical compositions and antimicrobial activity of the essential oils from the leaves and stem of Amomum rubidumLamxay & N. S. Lý, collected from Bidoup Nui Ba National Park, Lam Dong, Vietnam. The essential oils were obtained by hydrodisitllation method while antimicrobial activity was evaluetd by microdilution broth susceptibility assay. The main constituents of the leaf essential oil were identified as 1,8-cineole (37.7%), δ-3-carene (19.5%) and limonene (16.3%) while δ-3-carene (21.9%), limonene (17.8%) and ß-phellandrene (14.6%) dominated in the stem essentialoil. The leaf and stem essential oils displayed stronger inhibition of Pseudomonas aeruginosa with MIC of 25 µg/mLand 50 µg/mL respectively. The stem essential oil was active against Candida albicans (MIC, 50 µg/mL) while both essential oils inhibited the growth of Fusarium oxysporum (MIC 50 µg/mL). This is the first report on chemical constituents and antimicrobial activity of the essential oils of A. rubidum.


Este artículo describe la composición química y la actividad antimicrobiana de aceites esenciales de las hojas y el tallo de Amomum rubidum Lamxay & N. S. Lý recolectados del Parque Nacional Bidoup Nui Ba, Lam Dong, Vietnam. Los aceites esenciales se obtuvieron mediante el método de hidrodisitilación, mientras que la actividad antimicrobiana se evaluó mediante un ensayo de susceptibilidad de caldo de microdilución. Los principales componentes del aceite esencial de la hoja se identificaron como 1,8-cineol (37,7%), δ-3-careno (19,5%) y limoneno (16,3%), mientras que δ-3-careno (21,9%), limoneno (17,8 %) y ß-felandreno (14,6%) dominaron en el aceite esencial del tallo. Los aceites esenciales de hoja y tallo mostraron una inhibición más fuerte de Pseudomonas aeruginosa con un MIC de 25 µg/mL y 50 µg/mL, respectivamente. El aceite esencial del tallo fue activo contra Candida albicans (MIC, 50 µg/mL) mientras que ambos aceites esenciales inhibieron el crecimiento de Fusarium oxysporum (MIC 50 µg/mL). Este es el primer informe sobre los componentes químicos y la actividad antimicrobiana de los aceites esenciales de A. rubidum.


Subject(s)
Oils, Volatile/pharmacology , Amomum/chemistry , Anti-Infective Agents/pharmacology , Pseudomonas aeruginosa/drug effects , Candida albicans/drug effects , Oils, Volatile/chemistry , Microbial Sensitivity Tests , Distillation , Chromatography, Gas , Plant Stems , Plant Leaves , Monoterpenes/analysis , Fusarium/drug effects , Anti-Infective Agents/chemistry
11.
Bol. latinoam. Caribe plantas med. aromát ; 20(1): 61-70, 2021. tab, ilus
Article in English | LILACS | ID: biblio-1284444

ABSTRACT

Identification of the chemical compositionof essential oils is very important for ensuring the quality of finished herbal products. The objective of the study was to analyze the chemical components present in the essential oils of five Beilschmiediaspecies (i.e. B. kunstleri, B. maingayi, B. penangiana, B. madang, and B. glabra) by multivariate data analysis using principal component analysis (PCA) and hierarchical clustering analysis (HCA) methods. The essential oils were obtained by hydrodistillation and fully characterized by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). A total of 108 chemical components were successfully identified from the essential oils of five Beilschmiediaspecies. The essential oils were characterized by high proportions of ß-caryophyllene (B.kunstleri), δ-cadinene (B. penangianaand B. madang), and ß-eudesmol (B. maingayiand B. glabra). Principal component analysis (PCA) and hierarchical cluster analysis (HCA) revealed that chemical similarity was highest for all samples, except for B. madang. The multivariate data analysis may be used for the identification and characterization of essential oils from different Beilschmiediaspecies that are to be used as raw materials of traditional herbal products.


La identificación de la composición química de los aceites esenciales es muy importante para garantizar la calidad de los productos herbales terminados. El objetivo del estudio fue analizar los componentes químicos presentes en los aceites esenciales de cinco especies de Beilschmiedia (B. kunstleri, B. maingayi, B. penangiana, B. madangy B. glabra) mediante análisis de datos multivariados utilizando los métodos de análisis de componente principal (PCA) y análisis de agrupamiento jerárquico (HCA). Los aceites esenciales se obtuvieron por hidrodestilación y se caracterizaron completamente por cromatografía de gases (GC) y cromatografía de gases-espectrometría de masas (GC-MS). Se identificaron con éxito un total de 108 componentes químicos a partir de los aceites esenciales de las cinco especies de Beilschmiedia. Los aceites esenciales se caracterizaron por altas proporciones de ß-cariofileno (B. kunstleri), δ-cadineno (B. penangianay B. madang) y ß-eudesmol (B. maingayiy B. glabra). El análisis de componentes principales (PCA) y el análisis de conglomerados jerárquicos (HCA) revelaron que la similitud química fue más alta para todas las muestras, excepto para B. madang. El análisis de datos multivariados puede usarse para la identificación y caracterización de aceites esenciales de diferentes especies de Beilschmiedia que se utilizan como materias primas de productos herbales tradicionales.


Subject(s)
Oils, Volatile/chemistry , Lauraceae/chemistry , Sesquiterpenes/analysis , Cluster Analysis , Distillation , Multivariate Analysis , Chromatography, Gas/methods , Principal Component Analysis , Monoterpenes/analysis
12.
Bol. latinoam. Caribe plantas med. aromát ; 20(1): 38-50, 2021. tab, ilus
Article in English | LILACS | ID: biblio-1284405

ABSTRACT

This study evaluated the insecticidal activity of Gallesia integrifolia essential oil from fruits, leaves, and flowers against Aedes aegyptilarvae and pupae. The essential oil was obtained by hydrodistillation and characterized by gas chromatography-mass spectrometry. Sulfur compounds represented 95 to 99% of the essential oil from fruits, leaves, and flowers. Essential oil major compounds were 2,8-dithianonane (52.6%) in fruits, 3,5-dithiahexanol-5,5-dioxide (38.9%) in leaves, and methionine ethyl ester (45.3%) in flowers. The essential oils showed high activity against larvae, and low for pupae withLC99.9of 5.87 and 1476.67µg/mL from fruits; 0.0096 and 348.33 µg/mL from leaves and 0.021and 342.84 µg/mL from flowers, respectively. The main compound with insecticide activity is probably n-ethyl-1,3-dithioisoindole, from isoindole organothiophosphate class, found in greater amount in flower and leaf essential oil. The great insecticide activity of G. integrifolia essential oil suggests that this product is a natural insecticide.


Este estudio evaluó la actividad insecticida del aceite esencial de frutos, hojas y flores de Gallesia integrifolia contra larvas y pupas de Aedes aegypti. El aceite esencial se obtuvo por hidrodestilación y se caracterizó por cromatografía de gases acoplada a espectrometría de masas. Los compuestos de azufre representaron del 95 al 99% del aceite esencial de frutas, hojas y flores. Los compuestos principales del aceite esencial fueron 2,8-ditianonano (52,6%) en frutas, 3,5-ditiahexanol-5,5-dióxido (38,9%) en hojas y éster etílico de metionina (45,3%) en flores. Los aceites esenciales mostraron alta actividad contra larvas y baja para pupas con LC99.9de 5.87 y 1476.67µg/mL de frutos; 0,0096 y 348,33 µg/mL de hojas y 0,021 y342,84 µg/mL de flores, respectivamente. El principal compuesto con actividad insecticida es probablemente el n-etil-1,3-ditioisoindol, de la clase de los organotiofosfatos de isoindol, que se encuentra en mayor cantidad en el aceite esencial de flores y hojas. La gran actividad insecticida del aceite esencial de G. integrifolia sugiere que este producto es un insecticida natural.


Subject(s)
Animals , Oils, Volatile/pharmacology , Aedes/drug effects , Phytolaccaceae/chemistry , Insecticides/pharmacology , Terpenes/analysis , Oils, Volatile/chemistry , Cholinesterase Inhibitors , Plant Leaves/chemistry , Flowers/chemistry , Fruit/chemistry , Insecticides/chemistry , Gas Chromatography-Mass Spectrometry
13.
Braz. arch. biol. technol ; 64(spe): e21200772, 2021. tab, graf
Article in English | LILACS | ID: biblio-1278459

ABSTRACT

Abstract Eucalyptus species possess anti-inflammatory, antifungal, antibacterial, and insecticidal properties. In this study, the chemical composition and biological activities of Eucalyptus cinerea essential oil (EO) and the leaf and stem anatomy were investigated. EO was extracted by Clevenger apparatus and the compounds were identified by GC/MS. The antioxidant activity was evaluated by DPPH, ABTS, and reducing phosphomolybdenum complex. Broth microdilution was used to determine antimicrobial activity. Cytotoxicity was verified against HeLa, HRT-18, and Calu-3 cells by MTT assay. The cytotoxic mechanism was studied by cell DNA content, cell cycle, and DNA fragmentation. The microscopic analyzes of the leaves and the stems were performed by light microscopy, field emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The main constituent of the EO was 1,8-cineole (55.24%). The EO showed low antioxidant and antimicrobial activities. Calu-3 cells showed a significant reduction in viability with IC50 of 689.79 ± 29.34 μg/mL. EO at 1000 μg/mL decreased the DNA content in Jurkat cells. In general, EO increased cell percentage in sub-G0 and S phases with concomitant reduction of cell percentage in G0/G1 and G2/M phases and provided DNA fragmentation of 29.73%. Anatomical and micromorphological features of the leaves and stems can help in the species identification and its differentiation from other Eucalyptus species.


Subject(s)
Terpenes , Biological Phenomena , Oils, Volatile , Myrtaceae , Microscopy
14.
Braz. arch. biol. technol ; 64: e21200663, 2021. tab, graf
Article in English | LILACS | ID: biblio-1278440

ABSTRACT

Abstract Our study aimed to evaluate the chemical composition of the essential oil from the leaves of Eugenia pyriformis Cambess., belonging to the Myrtaceae family and native to the Brazilian Atlantic forest. The volatile compounds in the essential oil were extracted by hydrodistillation and analyzed using GC-MS; 36 compounds accounted for 78.80% of the total oil content. The major compounds were β-caryophyllene, bicyclogermacrene, globulol, and (δ-cadinene. We evaluated their antimicrobial potential of the essential oil and toxicity to Artemia salina. The antimicrobial activity of the essential oil was evaluated against 12 microorganisms using the broth microdilution method. Our results showed moderate inhibition of Staphylococcus aureus and methicillin-resistant S. aureus (MIC, 250 and 125 μg.mL-1, respectively) and toxicity to A. salina (LC50, 125.64 μg.mL-1). Our results establish the biological activity of the essential oil obtained from E. pyriformis.


Subject(s)
Oils, Volatile , Myrtaceae/chemistry , Drug Resistance, Microbial , Anti-Infective Agents
15.
Braz. arch. biol. technol ; 64: e21200106, 2021. tab, graf
Article in English | LILACS | ID: biblio-1345494

ABSTRACT

Abstract The aim of this study was to evaluate the antimicrobial effect of the essential oils of cinnamon, cardamom, clove, oregano, and thyme and their synergism on vegetative cells and endospores of Clostridium perfringens type A inoculated in meat sausage (mortadella), as well as the influence of blends on the color, and lipid oxidation through the determination of thiobarbituric acid reactive substances (TBARS index). The anticlostridial action of the oil blends was established. The two added oil blends (Treat. 1: oregano, clove, and thyme; Treat. 2: oregano, clove, and cinnamon) in combination with reduced nitrite content (75 ppm) promoted a lower growth of C. perfringens in mortadella stored at 15 °C for 21 days in comparison to treatments containing only 75 ppm of nitrite. The essential oil blends showed antioxidant action and did not alter food color, thus possessing potential application as a preservative for the meat products industry.


Subject(s)
Oils, Volatile , Endospore-Forming Bacteria , Anti-Infective Agents/pharmacology , Nitrites , Antioxidants/pharmacology , Cinnamomum zeylanicum , Dianthus , Elettaria , Origanum , Thymus Plant
16.
Rev. cuba. invest. bioméd ; 40(supl.1): e1450, 2021. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1289473

ABSTRACT

Introducción: La Minthostachys mollises una planta aromática que crece en América Latina y produce aceites esenciales con acción antimicrobiana. Objetivo: Determinar la actividad del aceite esencial de Minthostachys mollis en diferentes concentraciones, comparado con doxiciclina y fluconazol frente a Porphyromonas gingivalis, Staphylococcus aureus y Candida albicans, a las 24, 48 y 72 horas. Métodos: Se realiza estudio experimental in vitro y longitudinal. Se prepararon 15 pocillos por subgrupo para evaluar el efecto inhibitorio de todas las concentraciones, dando un total de 360 pocillos. Por cromatografía de gases acoplada a espectrometría de masas se identificaron los componentes químicos del aceite esencial. Se analizó el efecto inhibitorio por el método de difusión de Kirby-Bauer en Agar Columbia y Agar Muller Hinton. El análisis estadístico se realizó mediante la prueba ANOVA y Tukey. Resultados: En el análisis químico se identificó principalmente pulegona (30,17 por ciento) y mentona (16,55 por ciento). Los halos de inhibición de Minthostachys mollis al 100 por ciento a las 24, 48 y 72 horas frente a la Porphyromonas gingivalis, midieron: 10,2 mm, 9,8 mm y 9,6 mm, respectivamente; frente al Staphylococcus aureus, midieron: 10,4 mm, 9,7 mm y 9,4 mm, respectivamente; y, por último, frente a Candida albicans midieron: 9,8 mm, 8,9 mm y 8,5 mm, respectivamente. Todas las concentraciones de Minthostachys mollis presentaron un efecto antimicrobiano significativamente menor que el fluconazol y la doxiciclina (p < 0,001). Conclusiones: El aceite esencial de Minthostachys mollis al 100 % presentó su mejor actividad inhibitoria frente al Staphylococcus aureus, la Porphyromonas gingivalis y la Candida albicans a las 24 horas. Sin embargo, este efecto antimicrobiano disminuye a medida que pasa el tiempo(AU)


Introduction: Minthostachys mollis is an aromatic plant species growing in Latin America which produces essential oils with antimicrobial activity. Objective: Determine the activity of essential oil from Minthostachys mollis at various concentrations as compared with doxycycline and fluconazole against Porphyromonas gingivalis, Staphylococcus aureus and Candida albicans at 24, 48 and 72 hours. Methods: An in vitro experimental longitudinal study was conducted. Fifteen wells were prepared per subgroup to evaluate the inhibitory effect of all concentrations, for a sum total of 360 wells. Chemical components of the essential oil were identified by gas chromatography-mass spectrometry. The inhibitory effect was analyzed with the Kirby-Bauer diffusion method in Mueller-Hinton and Columbia agar. Statistical analysis was based on ANOVA and Tukey's test. Results: Chemical analysis mainly found pulegone (30.17 percent) and menthone (16.55 percent). The inhibition halos of 100 percent Minthostachys mollis at 24, 48 and 72 hours against Porphyromonas gingivalis measured 10.2 mm, 9.8 mm and 9.6 mm, respectively, against Staphylococcus aureus they measured 10.4 mm, 9.7 mm and 9.4 mm, respectively, and against Candida albicans they measured 9.8 mm, 8.9 mm and 8.5 mm, respectively. The antimicrobial effect of Minthostachys mollis at all concentrations was significantly lower than that of fluconazole and doxycycline (p < 0.001). Conclusions: The essential oil from 100% Minthostachys mollis displayed its best inhibitory activity against Staphylococcus aureus, Porphyromonas gingivalis and Candida albicans at 24 hours. However, such antimicrobial effect decreases with the passing of time(AU)


Subject(s)
Humans , In Vitro Techniques , Oils, Volatile , Fluconazole , Analysis of Variance , Chromatography, Gas , Porphyromonas gingivalis , Gas Chromatography-Mass Spectrometry , Longitudinal Studies , Chemical Phenomena
17.
Braz. arch. biol. technol ; 64: e21190253, 2021. tab, graf
Article in English | LILACS | ID: biblio-1153292

ABSTRACT

HIGHLIGHTS Essential oils from populations of B. dracunculifolia were investigated. β-pinene and (E)-nerolidol were the main compounds in B. dracunculifolia populations. The difference in the chemical profile of the essential oils is quantitative only. There is a negative correlation between the antioxidant activity and spathulenol.


Abstract Baccharis dracunculifolia DC. is a Brazilian native plant, presenting wide chemical diversity and numerous pharmaceutical and industrial applications. This research assessed the yield, antioxidant activity and the chemical similarity of essential oils from 10 populations of B. dracunculifolia in the state of Paraná, southern Brazil. The extraction of the volatile compounds was carried out by hydrodistillation, the chemical composition was determined by GC/FID and GC/MS and the antioxidant activity by the DPPH method. The essential oil yield of wild B. dracunculifolia populations ranged from 0.14 to 0.87%. The oils were predominantly composed of oxygenated sesquiterpenes (34.16 - 51.01%), monoterpene hydrocarbons (18.02 - 46.17%) and sesquiterpenes hydrocarbons (9.60 - 17.70%). The major compounds found in all populations were β-pinene (7.65 - 29.8%) and (E)-nerolidol (9.11 - 21.68%). Essential oil solutions (20%) from different populations presented antioxidant capacity ranging from 27.78 to 91.67%. A negative correlation was found between the antioxidant activity and spathulenol (r = -0.696). Multivariate analyses separated the populations into three groups: (1) low concentrations of α-pinene (2.02 - 2.06%), (2) high concentrations of α-pinene (4.17 - 4.61%) and β-pinene (22.54 - 29.80%), and (3) intermediate concentrations of α-pinene (2.38 - 3.31%), β-pinene (12.77 - 19.03%) and spathulenol (6.02 - 9.06%).


Subject(s)
Plant Oils/chemistry , Oils, Volatile/chemistry , Baccharis/chemistry , Antioxidants/chemistry , Plants, Medicinal/chemistry , Plant Oils/isolation & purification , Brazil , Oils, Volatile/isolation & purification , Plant Extracts/isolation & purification
18.
Braz. dent. sci ; 24(2): 1-10, 2021. tab, ilus
Article in English | LILACS, BBO | ID: biblio-1178369

ABSTRACT

Objective: The aim of this study was to evaluate the effect of four different mouthrinses on the surface roughness of two nanohybrid resin composites. Material and Methods: Fifty samples were prepared for each of the resin composites (2x8 mm) and a profilometer was used to determine the initial surface roughness (Ra) of each sample. Then, they were divided into 5 subgroups (n= 10), and exposed to the following mouthrinses (12h, 37 ºC): containing alcohol and essential oils; alcohol and chlorhexidine; alcohol-free and essential oils; alcohol free and cetil prydinium chlorite; or distilled water (control). The surface roughness of each sample was measured again. Statistical analyses of the data were performed via two-way ANOVA and Bonferroni tests. Results: Overall, statistically significant differences were not found between the resin composites (p> 0.05), but significant differences were found among the mouthrinses (p< 0.05). Interactions between the mouthrinses and the resin composites was statistically significant (p< 0.05). Both of the resin composites had the highest surface roughness after exposure to mouthrinse with alcohol and essential oils (p< 0.05), followed by mouthrinse with alcohol and chlorhexidine. Both alcohol-free mouthrinses caused surface roughness either similar to distilled water (p> 0.05) or lower than distilled water (p< 0.05) on the nanohybrid resin composites used. Conclusion: The mouthrinses affected the surface roughness of the resin composites in different ways. This was dependent on mouthrinse contents and the chemical structure of the resin composites. Alcohol-containing mouthrinses caused the most changes in the surface roughness of both resin composites (AU)


Objetivo: O objetivo deste estudo foi avaliar o efeito de quatro diferentes enxaguatórios bucais sobre a rugosidade superficial de duas resinas compostas nano-híbridas. Material e Métodos: Cinquenta amostras foram preparadas para cada uma das resinas compostas (2x8 mm) e um perfilômetro foi utilizado para determinar a rugosidade superficial inicial (Ra) de cada amostra. Em seguida, foram divididos em 5 subgrupos (n = 10) e expostos aos seguintes enxaguatórios (12h, 37 ºC): contendo álcool e óleos essenciais; álcool e clorexidina; Óleos sem álcool e essenciais; sem álcool e cloreto de cetilpridínio; ou água destilada (controle). A rugosidade da superfície de cada amostra foi medida novamente. As análises estatísticas dos dados foram realizadas por meio de ANOVA de dois fatores e testes de Bonferroni. Resultados: No geral, não foram encontradas diferenças estatisticamente significativas entre as resinas compostas (p> 0,05), mas diferenças significativas foram encontradas entre os enxaguatórios bucais (p <0,05). As interações entre os enxaguatórios bucais e as resinas compostas foram estatisticamente significativas (p <0,05). Ambas as resinas compostas apresentaram maior rugosidade superficial após exposição ao enxaguatório bucal com álcool e óleos essenciais (p <0,05), seguido do enxaguatório com álcool e clorexidina. Ambos os enxaguatórios bucais sem álcool causaram rugosidade superficial semelhante à da água destilada (p> 0,05) ou menor do que a água destilada (p <0,05) nas resinas compostas nano-híbridas usadas. (AU)


Subject(s)
Oils, Volatile , Chlorhexidine , Composite Resins , Mouthwashes
19.
Braz. J. Vet. Res. Anim. Sci. (Online) ; 58: e178032, 2021. tab, graf, ilus
Article in English | ID: biblio-1344682

ABSTRACT

Currently, the use of alternative medicine is necessary, even in animals. Our study focused on the valorisation of the use of herbal products in Algerian veterinary medicine. This study is based on a 6-month exploratory survey of 257 private practicing veterinarians, followed by a study of the bacteriological activity of the essential oil of the Pistacia lentiscus plant. The survey results generally indicate that private veterinarians support phytotherapy as an alternative to conventional drugs in several areas and species. Also, the results of research conducted on the antibacterial activity of Pistacia lentiscusessential oil show that it inactivates 50% of the bacterial strains. This confirms the well-defined role of this medicinal plant used as an alternative in veterinary medicine.(AU)


Na atualidade o emprego da medicina alternativa é uma realidade, inclusive para os animais; este trabalho visa a valorização do emprego de produtos fitoterápicos na medicina veterinária da Argélia. O presente estudo baseou-se em um levantamento realizado durante seis meses com 257 médicos veterinários do setor privado, seguido de uma investigação da atividade bacteriológica do óleo essencial da planta Pistacia lentiscus. Os resultados do levantamento indicaram que esses profissionais aceitam o emprego da fitoterapia como uma alternativa para as drogas de uso convencional em diferentes áreas e espécies de animais. A avaliação da atividade antibacteriana do óleo essencial da Pistacia lentiscusrevelou que 50% das estirpes bacterianas empregadas foram inativadas após seu uso, o que confirmou a possibilidade do emprego desta planta medicinal como uma alternativa para a medicina veterinária.(AU)


Subject(s)
Animals , Pistacia/microbiology , Phytotherapy , Anti-Infective Agents/administration & dosage , Oils, Volatile
20.
Article in Chinese | WPRIM | ID: wpr-879100

ABSTRACT

Indication and functions is an important key information in the research and development of the ancient classical formulas, which directly affects the clinical positioning of the compound formulas and their reasonable, effective and safe use after marke-ting. It is also the embodiment of the ultimate vitality of ancient classical formulas. Due to the particularity of ancient classical formulas, it is of great significance to accurately define and describe the functions and indications of classical formulas to exert their unqiue advantages. Based on the analysis of the provenances, classification of clinical indications, and functions of 100 prescriptions in the Catalogue of Ancient Classical Formulas(First Batch), this paper summarized the incompleteness, irregularity and inconsistency in the original text, the differences in terminology between ancient and modern times, and the evolution of the meanings of prescriptions in different dynasties. In addition, under the guidance of the general principle of textual researh on ancient classical formulas, which is to inherit the essence, make the past serve the present, link up the past and the present, and bulid consensus, this paper proposed the following ideas: respecting the original meanings and provenances of ancient classical formulas, taking full consideration of the development and evolution, serving the current clinical application and health needs, accurately linking up the ancient and modern terminologies, standardizing the expression of traditional Chinese medicine(TCM) terminology, highlighting the characteristics of TCM, attaching importance to the textual research principles and suggestions of post-marketing evidence-based and clinical positioning research, so as to determine the the functions and indications of the ancient classical formulas in a scientific, standardized and reasonable way and better guide the clinical application of the classical formulas.


Subject(s)
Drugs, Chinese Herbal , Medicine, Chinese Traditional , Oils, Volatile , Prescriptions
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