BACKGROUND: The increasing industrial demand for carotenoids has led to growing interest in their bioproduction. The need to reduce production costs has encouraged the use of low-cost agroindustrial substrates. In this context, this work studied the pretreatment of Mozzarella cheese whey and the use of the pretreated whey as fermentation medium for the bioproduction of carotenoids by Sporidiobolus salmonicolor CBS 2636.
RESUMOCom este trabalho, avaliou-se a produção de biopolímero sintetizado por Sphingomonas capsulata ATCC 14666, utilizando-se os meios industriais melaço bruto e pré-tratado e resíduo de proteína texturizada de soja (PTS). Foram testadas diferentes concentrações de meios industriais (2,66, 4, 6 e 8%), cujas condições de fermentação utilizadas foram 28º ± 2ºC, 208 rpm, 72 h. Os ensaios foram realizados em triplicata e os resultados foram avaliados estatisticamente mediante o teste de Tukey. As melhores produtividades foram obtidas para melaço pré-tratado 8% (0,290 gL -1 h -1 ), seguida de extrato aquoso de resíduo de PTS 6% (0,240 gL -1 h -1 ) e melaço bruto 8% (0,190 gL -1 h -1 ). A qualidade reológica das gomas foi demonstrada através da leitura de viscosidade aparente de soluções aquosas e salinas a 25 e 60ºC.Termos para indexação: Biopolímeros, gênero Sphingomonas, meios industriais.
ABSTRACTThis work studied the biopolymer production by Sphingomonas capsulata ATCC 14666 using industrial raw material and pretreated molasses and aqueous extract of textured soy protein (TSP). Different concentrations of industrial media (2.66, 4, 6 and 8 w/t%) were evaluated at 28º ± 2ºC, 208rpm, 72h, were the fermentation conditions utilized. Triplicate assays were conducted and Tukey s test was used. The highest productivity were obtained for 8% of pretreated molasses (0,290 gL -1 h -1 ), 6% of aqueous extract of TSP (0,240 gL -1 h -1 ) and 8% raw molasses (0,190 gL -1 h -1 ), respectively. The rheological behavior of aqueous and saline (NaCl and CaCl 2 3% wt/v) solutions of biopolymers were investigated by apparent viscosity analysis at 25 and 60ºC.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.