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The isolation of pentose-assimilating yeasts and their xylose fermentation pote...
Martins,Gisele Marta; Bocchini-Martins,Daniela Alonso; Bezzerra-Bussoli,Carolina; Pagnocca,Fernando Carlos; Boscolo,Maurício; Monteiro,Diego AlvesABSTRACT For the implementation of cellulosic ethanol technology, the maximum use of lignocellulosic materials is important to increase efficiency and to reduce costs. In this context, appropriate use of the pentose released by hemicellulose hydrolysis could improve de economic viability of this process. Since the Saccharomyces cerevisiae is unable to ferment the pentose, the search for pentose-fermenting micro...
CIÊNCIAS, TRABALHO E EDUCAÇÃO NO SISTEMA PENITENCIÁRIO BRASILEIRO
Silva,Roberto da; Moreira,Fábio Aparecido; Oliveira,Carolina Bessa Ferreira deRESUMO: Este artigo tematiza as relações entre as diversas áreas de conhecimento e respectivos profissionais que atuam na execução penal no sistema penitenciário brasileiro. O tema é relevante porque partimos do pressuposto de que a ressignificação dessas áreas de conhecimento pode alterar a forma como se faz educação e gestão do trabalho dentro da prisão. A tese a ser explorada no artigo problematiza a subordi...
A educação para as relações étnico-raciais e os estudos sobre racismo no Brasil
Silva,Roberto da; Tobias,Juliano da SilvaRESUMO Este artigo tem como objetivo fazer a revisão bibliográfica de alguns dos estudos clássicos sobre as relações raciais no Brasil. A revisão engloba o período do início dos anos 30 do século XX até os trabalhos mais recentes, que têm em comum o fato de caracterizarem a discriminação racial como fator importante para a manutenção das desigualdades raciais, reunindo argumentos que fundamentam as reflexões qu...
Selection of Xilose-Fermenting Yeast Strains
Silva,Rosimeire Oenning da; Cereda,Marney Pascoli; Gomes,Eleni; Martins,Gisele Marta; Pagnocca,Fernando Carlos; Silva,Roberto daABSTRACT In Brazil, ethanol is obtained by fermentat of sugar cane juice using Saccharomyces cerevisiae. The cane juice extraction generates the bagasse that has been used for obtaining generation biofuel. However, the sugarcane bagasse has 30% pentose that cannot be fermented to ethanol by S. cerevisiae. Thus the aim of this study was to isolate a yeast able to ferment xylose to ethanol. Samples of cane juice ...
A eficácia sociopedagógica da pena de privação da liberdade
Silva,Roberto daEste artigo recupera parte da pesquisa de doutoramento intitulada A eficácia sociopedagógica da pena de privação da liberdadeII, realizada no período de 1997 a 2001, junto ao Programa de Pós-Graduação em Educação da Universidade de São Paulo e defendida em 21 de agosto de 2001. A pertinência de voltar a refletir sobre o tema decorre da aprovação das Diretrizes Nacionais para a Oferta da Educação em Estabelecime...
Chemical and sensory characteristics of pulp and peel 'cajá-manga' (Spondias cy...
Lago-Vanzela,Ellen Silva; Ramin,Priscila; Umsza-Guez,Marcelo Andrés; Santos,Ginaldo Vieira; Gomes,Eleni; Silva,Roberto daCajá-manga (Spondias cytherea) is a fruit with intense aroma and a sweet sour taste, thus being very appreciated. Its peel, in spite of being more fibrous, is tender and many times consumed with the pulp. The peel is a part of foods normally discarded, but many times, it is rich in taste and fibers, representing an option at the elaboration of new foods. Since there are no reports in the literature on the use o...
Effect of pectinolitic enzymes on the physical properties of caja-manga (Spondi...
Umsza-Guez,Marcelo Andres; Rinaldi,Rebeca; Lago-Vanzela,Ellen Silva; Martin,Natalia; Silva,Roberto da; Gomes,Eleni; Thoméo,João CláudioCajá-manga, also known as golden apple and hog-plum, is an exotic fruit native from Îles de la Société (French Polynesia), which was first introduced in Brazil in 1985. The pulp of ripe fruit was treated with the commercial enzymatic pool and its effect was evaluated in terms of yield, as well as the physical properties viscosity, turbidity and color (L* values). Response surface methodology was used and three ...
Ligninases production by Basidiomycetes strains on lignocellulosic agricultural...
Gomes,Eleni; Aguiar,Ana Paula; Carvalho,Caio César; Bonfá,Maricy Raquel B.; Silva,Roberto da; Boscolo,MauricioWood rotting Basidiomycetes collected in the "Estação Ecológica do Noroeste Paulista", São José do Rio Preto, São Paulo State, Brazil, concerning Aphyllophorales order and identified as Coriolopsis byrsina SXS16, Lentinus strigellus SXS355, Lentinus sp SXS48, Picnoporus sanguineus SXS 43 and Phellinus rimosus SXS47 were tested for ligninases production by solid state fermentation (SSF) using wheat bran or rice ...
The public good game on graphs: can the pro-social behavior persist?
Silva,Roberto daThis communication proposes new alternatives to study the pro-social behavior in artificial society of players in the context of public good game via Monte Carlo simulations. Here, the pro-social aspect is governed by a binary variable called motivation that incites the player to invest in the public good. This variable is updated according to the benefit achieved by the player, which is quantified by a return ...
Production and characterization of glucoamylase from fungus Aspergillus awamori...
Pavezzi,Fabiana Carina; Gomes,Eleni; Silva,Roberto daGlucoamylase is widely used in the food industry to produce high glucose syrup, and also in fermentation processes for production beer and ethanol. In this work the productivity of the glucoamylase of Aspergillus awamori expressed by the yeast Saccharomyces cerevisiae, produced in submerged fermentation using different starches, was evaluated and characterized physico-chemically. The enzyme presented high speci...