Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/255808
Type: TESE
Title: Estudo da destoxificação do farelo de mamona e seu controle analitico
Author: Viotto, Walkíria Hanada, 1956-
Advisor: Esteves, Walter, 1925-
Abstract: Resumo: Quatro farelos de mamona de origem industrial e 2 farelos de mamona produzidos no laboratório foram autoclavados a 125 se por vários tempos e submetidos a testes de táxi dez em cobaias, observando-se a necessidade de um tempo de 10 minutos para a total destoxificação das amostras analisadas. Ao se avaliar o efeito do tratamento térmico sobre os constituintes do farelo, descobriu-se que a porcentagem de arginina, na proteína solúvel, aumentou com a intensidade do tratamento térmico, constituindo-se, portanto num bom parâmetro químico para avaliação de toxidez residual do farelo de mamona, destoxificado por tratamento térmico. Propôs-se então, como indicador de toxidez do farelo de mamona, a sua porcentagem de argínina, expressa pela relação S/10 B, ou seja,a relação entre o teor de arginina determinado pelo método Sakaguchi modificado e o teor de proteína solúvel, determinado pelo método de Biureto. Quando a relação S/10B ? 13, os farelos analisados se mostraram totalmente destoxificados

Abstract: Four samples of castor bean meal of industrial origin and two samples of castor meal produced in the laboratory were autoclaved at 125 °C for different time intervals and submitted to toxicity tests in guinea pigs. It was shown that a time of 10 minutes was needed for total detoxification of the analysed samples. On evaluating the effect of the heat treatment on the components of the castor meal, it was discovered that the percentage of arginine in the soluble protein increased with the intensity of heat treatment, thus constituting a good chemical parameter for the evaluation of the residual toxicity of castor bean meal detoxified by thermal treat meat. Thus the percentage of arginine was proposed as a toxicity index of castor meal, expressed as the S/10 B ratio, that is the relation between the quantity of arginine determined by the modified Sakaguchi method and the quantity of soluble protein determined by the Biuret method. When the ratio S/10 B is equal or greater than 13, the cast or meal analysed was shown to be completely detoxified
Subject: Mamona - Toxinas
Language: Português
Editor: [s.n.]
Date Issue: 1987
Appears in Collections:FEA - Dissertação e Tese

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