Leavening
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Fracionamento and quimica characterization of the cellular wall of leavening - functional and physiological properties of the fractions. / Fracionamento e caracterização quimica da parede celular de levedura : propriedades funcionais e fisiologicas das frações.
O presente trabalho teve por objetivo o fracionamento e a caracterização química da parede celular (PC) de levedura obtida como subproduto do processo industrial da produção de etanol, visando avaliar as propriedades funcionais e fisiológicas do material fracionado. A PC foi fracionada em glicoproteína (GP), glicana mais manana (G+M), glicana insolúv
Publicado em: 2004
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2. Alterações na biossintese de carotenoides em leveduras induzidas por agentes quimicos. / Alterations in biosynthesis of carotenóides in induced leavenings for chemical agents.
Os carotenóides são corantes naturais, alguns são precursores de vitamina A e, recentemente, a estes compostos tem sido atribuído um importante papel na diminuição do risco de várias doenças degenerativas. A produção biotecnológica de carotenóides específicos, utilizando bactérias, fungos e leveduras, vem despertando crescente interesse. O pres
Publicado em: 2004
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3. Desenvolvimento de um produto desidratado combinando pescado salgado com uma base proteica obtida de farinhas de soja e trigo
The present work was undertaken with the aim of developing a dehydrated product (fish-balls) by combining defatted soy flour, wheat flour and minced salted fish. Defatted soy flour and wheat flour were mixed at levels of 1.0 : 1.0 , 0.75 : 1.0 , 0.50 : 1.0 and 0.5 : 1.0 parts respectively, leavened with 6% of commercial yeast for 45 minutes, baked at 200-210
Publicado em: 1985
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4. Construction from a single parent of baker's yeast strains with high freeze tolerance and fermentative activity in both lean and sweet doughs.
From a freeze-tolerant baker's yeast (Saccharomyces cerevisiae), 2,333 spore clones were obtained. To improve the leavening ability in lean dough of the parent strain, we selected 555 of the high-maltose-fermentative spore clones by using a method in which a soft agar solution containing maltose and bromocresol purple was overlaid on yeast colonies. By measu
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5. Role of Leuconostoc mesenteroides in Leavening the Batter of Idli, a Fermented Food of India1
The fermentation of the batter of idli, a fermented food of India, was studied. The microorganisms responsible for the characteristic changes in the batter were isolated and identified. Although there is a sequential change in the bacterial flora, the predominant microorganism responsible for souring, as well as for gas production, was found to be Leuconosto
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6. Role of Leuconostoc mesenteroides in Leavening the Batter of Idli, a Fermented Food of India
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7. Leavening ability and freeze tolerance of yeasts isolated from traditional corn and rye bread doughs.
Strains of Saccharomyces cerevisiae and Torulaspora delbrueckii isolated from traditional bread doughs displayed dough-raising capacities similar to the ones found in baker's yeasts. During storage of frozen doughs, strains of T. delbrueckii (IGC 5321, IGC 5323, and IGC 4478) presented approximately the same leavening ability for 30 days. Cell viability was
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8. Microorganisms of the San Francisco Sour Dough Bread Process: I. Yeasts Responsible for the Leavening Action
Two hundred isolates from San Francisco sour dough French bread fermentations (40 from each of five different bakeries) were screened by fermentation tests and for their ability to grow in the presence of cycloheximide (Actidione). All of the isolates from four of the bakeries and 70% of those from the fifth were unable to utilize maltose but grew well on ot
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9. Disruption of the CAR1 Gene Encoding Arginase Enhances Freeze Tolerance of the Commercial Baker's Yeast Saccharomyces cerevisiae
The effect of intracellular charged amino acids on freeze tolerance in doughs was determined by constructing homozygous diploid arginase-deficient mutants of commercial baker's yeast. An arginase mutant accumulated higher levels of arginine and/or glutamate and showed increased leavening ability during the frozen-dough baking process, suggesting that disrupt
American Society for Microbiology.
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10. Generation of a Novel Saccharomyces cerevisiae Strain That Exhibits Strong Maltose Utilization and Hyperosmotic Resistance Using Nonrecombinant Techniques
A yeast strain capable of leavening both unsugared and sweet bread dough efficiently would reduce the necessity of carrying out the expensive procedure of producing multiple baker's yeast strains. But issues involving the use of genetically modified foods have rendered the use of recombinant techniques for developing yeast strains controversial. Therefore, w
American Society for Microbiology.
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11. Principal-Component Analysis of the Characteristics Desirable in Baker's Yeasts
Twenty-seven properties considered to be required for good bakery products were examined in 56 industrial and 2 laboratory yeast strains. The data obtained were applied to principal-component analysis, one of the multivariate statistical analyses. The first and second principal components together were extracted, and these accounted for 77.7% of the variance
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12. Genetic Evidence That High Noninduced Maltase and Maltose Permease Activities, Governed by MALx3-Encoded Transcriptional Regulators, Determine Efficiency of Gas Production by Baker’s Yeast in Unsugared Dough
Strain selection and improvement in the baker’s yeast industry have aimed to increase the speed of maltose fermentation in order to increase the leavening activity of industrial baking yeast. We identified two groups of baker’s strains of Saccharomyces cerevisiae that can be distinguished by the mode of regulation of maltose utilization. One group (nonla
American Society for Microbiology.