• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1
  • Tagged with
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Efeito do suco de caju (Anacardium occidentale L.) adicionado de farinhas do bagaÃo de caju sobre a resposta imunolÃgica em camundongos / Effect of cashew apple juice (Anacardium occidentale L.) added to flour from crushed cashews on the immune response in mice

Camila Freitas Bezerra 26 February 2013 (has links)
CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / O caju e a castanha, pseudofruto e fruto do cajueiro (Anacardium occidentale L.), apresentam alto valor nutricional, porÃm menos de 10% do pedÃnculo proveniente do beneficiamento da castanha sÃo aproveitados. Uma alternativa para o aproveitamento do bagaÃo de caju seria seu processamento em farinha, a qual poderia ser adicionada ao suco de caju e assim aumentar suas propriedades nutricionais. O objetivo do trabalho foi avaliar a composiÃÃo fitoquÃmica, o potencial antioxidante total e a atividade imunomoduladora do suco de caju adicionado com farinha do bagaÃo de caju maduro (SFM) e verde (SFV). Para tanto, avaliou-se a capacidade antioxidante do suco e das farinhas de caju (clone CCP-76) por dois mÃtodos, ABTS e DPPH. Os compostos fitoquÃmicos determinados foram os polifenÃis, vitamina C, carotenoides, antocianinas e flavonoides amarelos. Os testes in vivo foram realizados com camundongos Swiss machos, provenientes do BiotÃrio Central da UFC. O protocolo experimental foi aprovado pelo Comità de Ãtica em Pesquisa com Animal da UFC (N 102/2011). Para os ensaios toxicolÃgicos, camundongos foram tratados por 19 dias, por via oral, com diferentes doses de SFM e SFV e os parÃmetros fisiolÃgicos como peso do animal, peso relativo dos ÃrgÃos, peroxidaÃÃo lipÃdica e dosagem das enzimas ALT e AST foram determinados. Para avaliaÃÃo da resposta imune humoral e celular, os animais foram imunizados com hemÃcias de carneiro (HC) para determinar o tÃtulo de anticorpos pelo mÃtodo de hemaglutinaÃÃo e posteriormente desafiados com HC, para avaliar a resposta de hipersensibilidade tardia (DTH). Para verificar as diferenÃas significativas entre as mÃdias dos diferentes grupos, aplicou-se o teste ANOVA seguido de Tukey ou Newman-Keuls, considerando as diferenÃas significativas quando p < 0,05. A farinha verde de bagaÃo de caju apresentou a maior capacidade antioxidante e os maiores teores de polifenÃis, constituinte predominante tambÃm na farinha de caju maduro e no suco. NÃo se constatou alteraÃÃes significativas em nenhum parÃmetro avaliado no ensaio toxicolÃgico. Na resposta humoral, o suco de caju e o SFV na dose de 300 mg/kg apresentaram os maiores tÃtulos de anticorpos com aumento de 120,69 e 100% em relaÃÃo ao controle. Jà na resposta celular, o suco, SFM e SFV (dose de 300 mg/kg) induziram um aumento na DTH de 10,66; 10,66 e 11,11%, respectivamente, em relaÃÃo ao controle. O suco adicionado da farinha do bagaÃo do caju em diferentes estÃdios de maturidade pode ser uma alternativa para melhoria da resposta imunolÃgica. No entanto, sÃo necessÃrios estudos complementares para viabilizar essa suplementaÃÃo do suco com as farinhas. / The cashew apple and cashew nut, pseudo fruit and fruit (Anacardium occidentale L.) have high nutritional value, but less than 10% of the cashew apple from the processing of cashew nut is availed. The cashew apple juice added with bagasse flour could therefore be an alternative for the improvement of its nutritional properties. The aim of this study was to evaluate the phytochemical composition, the total antioxidant potential and immunomodulatory activity of cashew apple juice with added of the flour mature bagasse (CAJM) and immature (CAJIM) of the cashew apple. Therefore, we evaluated the antioxidant capacity of juice and flour of cashew apple (clone CCP-76) by two methods, ABTS and DPPH. The phytochemicals compounds quantified were polyphenols, vitamin C, carotenoids, anthocyanins and flavonoids yellow. In vivo tests were performed with male swiss mice, from the animal colony of UFC, with approval by the Ethics Committee on Animal Research (CEPA) under the UFC protocol No. 102/2011. Toxicity tests were carried out on mice treated for 19 days orally with CAJM and CAJIM at different doses. Physiological parameters such as body weight, relative organ to body weight, lipid peroxidation and dosage of the ALT and AST enzymes were determined. To evaluate the humoral and cellular immune response, the treated animals were immunized with sheep red blood cells (SRBC) to determine the antibody titer by hemagglutination method and later challenged with (SRBC) to evaluate the delayed type hypersensitivity (DTH) reaction. To analyze the significant differences between the means of different groups, we applied the ANOVA followed by Tukey or Newman-Keuls and differences were considered significant at p < 0.05. Flour Cashew green bagasse showed the highest antioxidant capacity and the highest levels of polyphenols, also predominant constituent in flour and ripe cashew juice. The ripe flour showed the highest antioxidant capacity and the highest levels of polyphenols, also predominant constituent in ripe flour and cashew apple juice. There were no significant changes in any parameters evaluated in toxicity test. In the humoral response, the cashew apple juice and CAJIM at dose of 300 mg / kg showed higher antibody titer with an increase of 120.69 and 100.00 % compared to the control group. Already in cellular response, juice, SFM and SFV (300 mg / kg) induced an increase in DTH of 10.66, 10.66 and 11.11% respectively, compared to control. The cashew apple juice added with the flour of cashew bagasse in stages of maturity different can be an alternative for improving the immune system. However, further studies are needed to enable this supplementation of juice with flours.

Page generated in 0.0422 seconds