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1.
Ciênc. rural (Online) ; 47(9): e20151646, 2017. tab
Article in English | LILACS | ID: biblio-1044944

ABSTRACT

ABSTRACT: The impact of alimentation on life's quality have encouraged the search for alternative foods with better quality and use of native fruits with technological and nutritional potentials contributes to the development of new products. Thus, the aim of this study was to develop a fermented flavored drink, potentially probiotic, based on the water-soluble extract of baru almond, perform sensory evaluation, determine its chemical composition and monitor the shelf life. The extract was fermented by a culture containing Streptococcus thermophilus, Lactobacillus acidophilus and Bifidobacterium. After fermentation, thickeners, sucrose and plum pulp were added, these latter two in accordance to the proposed factorial design that resulted seven assays. These formulations were subjected to sensorial analysis, which included the acceptance test and purchase intention. The optimized formulation had its physical-chemical and nutritional characteristics evaluated trough the determination of chemical and mineral composition, viability of the probiotic bacteria and the acidity and pH parameters were evaluated during the twenty-eight storage days. Formulations obtained high rates of acceptability and purchase intention and the optimized formulation achieved good nutritional characteristics, being a food with high manganese content and a source of magnesium and phosphorus. During the storage, the pH and acidity values varied and probiotic microorganism count increased. Probiotic potential of fermented drink can be justified by presence of both microorganisms and by the verified counting obtained since the seventh storage day of the product.


RESUMO: Os impactos da alimentação na qualidade de vida têm incentivado a busca de alternativas alimentares de melhor qualidade e a utilização de frutos nativos com potencial tecnológico e nutricional contribui para o desenvolvimento de novos produtos. Assim, o objetivo deste trabalho foi elaborar uma bebida fermentada saborizada, potencialmente probiótica, à base de extrato hidrossolúvel da amêndoa de Baru, realizar a avaliação sensorial, determinar sua composição centesimal e acompanhar a vida de prateleira. O extrato foi fermentado por uma cultura contendo Streptococcus thermophilus, Lactobacillus acidophilus e Bifidobacterium. Após a fermentação foram incorporados espessantes, sacarose e polpa de ameixa, estes dois últimos segundo o delineamento fatorial proposto que totalizou sete ensaios. As formulações foram submetidas a análise sensorial, que compreendeu o teste de aceitação e de intenção de compra. A formulação otimizada teve suas características físico-químicas e nutricionais avaliadas pela determinação da composição centesimal e de minerais. Avaliou-se a viabilidade das bactérias probióticas e os parâmetros de pH e acidez durante vinte e oito dias de armazenamento. As formulações obtiveram altos índices de aceitabilidade e intenção de compra e a bebida otimizada apresentou boas características nutricionais, sendo um alimento com alto conteúdo de manganês e fonte de magnésio e fósforo. Durante o armazenamento os valores de pH e acidez variaram e a contagem de microrganismos probióticos aumentou. Justifica-se a potencialidade probiótica dessa bebida pela presença de ambos micro-organismos e pela contagem verificada a partir do sétimo dia de armazenamento do produto.

2.
Rev. bras. med. esporte ; 18(3): 190-194, maio-jun. 2012. tab
Article in Portuguese | LILACS | ID: lil-647891

ABSTRACT

INTRODUÇÃO: O acúmulo de tecido adiposo provoca uma série de distúrbios metabólicos, os quais poderiam ser atenuados pela modulação dietética e prática de exercícios físicos. OBJETIVO: Avaliar os efeitos de dietas hipercalóricas/hiperlipídicas com extrato de baru e chocolate associadas ao exercício aeróbio sobre a área de adipócitos e triglicérides hepáticos (TGLhep) de ratos. MÉTODOS: Após o desmame, ratos da linhagem Wistar, com exceção dos controles (dieta Nuvilab®; 3,48kcal/g), foram alimentados com dieta à base de chocolate (4,17kcal/g), por dois meses, para indução da obesidade. Feito isso, os animais foram distribuídos em seis grupos: controle sedentários (CS), controle exercitados (CE), baru sedentários (BS), baru exercitados (BE), chocolate sedentários (CHOS), chocolate exercitados (CHOE), de acordo com a introdução da dieta com extrato de baru e treinamento de natação (2% do peso corporal., 8 sem., 5x/semana, 1h/sessão). Após a morte dos animais, o conteúdo de TGLhep foi determinado e os tecidos adiposos retroperitoneal, inguinal e omental foram removidos, pesados e submetidos à avaliação da área de adipócitos. RESULTADOS: As dietas hipercalóricas aumentaram o peso e a área de células do tecido retroperitoneal em relação à dieta controle (p < 0,05). O exercício reduziu a área de células do tecido omental (CHOE: 6.370,91 ± 7.776,13 < CHOS: 7.341,28 ± 5.862,24µm²) e inguinal (CHOE: 5.147,49 ± 5.712,71 < CHOS: 7.083,11 ± 7.682,40µm²) do grupo chocolate e inguinal do controle (CE: 2.212,87 ± 1.920,34 < CS: 3.386,11 ± 3.973,09µm²). O conteúdo de TGLhep dos animais sedentários apresentou-se mais elevado em relação aos animais exercitados e alimentados com as dietas hipercalóricas (BS: 1,36 ± 0,50 > BE: 0,88 ± 0,43mg.100mg-1; CHOS: 1,77 ± 0,64 > CHOE: 0,86 ± 0,41mg.100mg-1). CONCLUSÃO: O treinamento físico em intensidade leve à moderada reduziu significativamente os depósitos adiposos omental (visceral) e inguinal dos animais alimentados com dieta controle e chocolate. Esse mesmo comportamento não foi reproduzido com a dieta à base de extrato de baru. Os animais exercitados apresentaram menor conteúdo de TGLhep, mesmo na persistência das dietas hiperlipídicas/hipercalóricas.


INTRODUCTION: Fat tissue accumulation provokes several metabolic disorders, which may be attenuated by dietetic modulation and physical exercise. OBJECTIVE: The effects of hypercaloric/hyperlipidic diets with additional baru extract associated to aerobic exercise on adipocytes from different regions as well as on hepatic triglycerides (TGLhep)of Wistar rats were evaluated. METHODS: The animals, except for the control ones (Nuvilab® diet: 3.48kcal/g), were fed with a chocolate-based diet (4.17 kcal/g) during 2 months in order to induce obesity. The animals were then distributed into 6 groups, according to the introduction of baru extract diet as well as to swimming training: Sedentary Control (SC); Trained Control (TC); Sedentary Baru (SB); Trained Baru (TB); Sedentary Chocolate (SCho) and Trained Chocolate (TCho). The trained animals were subjected to swimming exercise supporting overload equivalent to 2% of body weight, during 8 weeks, 5x/week, and 1h/day. At the end, the animals were killed and the TGLhep content was determined. The retroperitoneal (RET), inguinal (IN), and omental (OM) fat tissues were excised, weighted, and submitted to adipocyte area evaluation. RESULTS: The hypercaloric diet increased both body weight and cell areas of RET if compared to the control diet (P<0.05). The physical training decreased the OM (TCho: 6370.91 ± 7776.13 < SCho: 7341.28 ± 2.24 µm2) and IN (TCho: 5147.49 ± 5712.71 < SCho: 7083.11±7682.40 µm2) cell areas of chocolate group as well as IN cell areas of TC (TE: 2212.87 ± 1920.34 < SC: 3386.11 ± 3973.09µm²). The TGLhep contents of sedentary animals were higher in comparison to the trained rats fed with hypercaloric diets (SB: 1.36 ± 0.50 > TB: 0.88 ± 0.43mg.100mg-1; SCho: 1.77 ± 0.64 > TCho: 0.86 ± 0.41mg.100mg-1). CONCLUSION: In the conditions of the present study, the exercise training protocol seemed more effective than the diet protocol in attenuating lipid tissue accumulation in rats.

3.
Arq. biol. tecnol ; 40(3): 721-31, out. 1997. tab, graf
Article in Portuguese | LILACS | ID: lil-247543

ABSTRACT

The aim of this study was to verify if the principal components method of analysis could be employed to characterize commercial powdermainly starch used in pudding preparation, identifying and reducing the most important factors. The multivariate analysis was applied to data regarding composition and functional properties which were taken from twelve samples totaling fourteen variables. The data were analyzed using a personal computer system ARTHUR. Seven variables (starch, fracturability, firmness, adhesiviness, cohesiveness, elasticity, total solids) of greater correlation and higher absolute values that were characteristic of the two principal components selected after the first examination. A second analysis which used only selected variables maintained the initial behaviour confirming the possibility of reducing variables without important loss of information. The application of the multivariate analysis using the principal components method for the study of commercial puddings proved to be efficient in the classification based on sample similarity, besides selecting and reducing variables to more outstanding factors


Subject(s)
Food Industry , Food Technology
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