Fermentative Enzymes
Mostrando 13-24 de 56 artigos, teses e dissertações.
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13. Efeito in vitro de Saccharomyces cerevisiae sobre Guignardia citricarpa, agente causal da pinta preta dos citros. / In vitro effect of Saccharomyces cerevisiae on Guignardia citricarpa, causal agent of citrus black spot.
Due to the consumers perception about the impact caused by pesticides utilization over the environment and human health, besides the acquisition of resistance for part of the phytopathogens, the society has exercised pressures that had led to the establishment of governmental politics that restrict the use of fungicides leading agriculturists and researchers
Publicado em: 2005
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14. Coordination of expression of Zymomonas mobilis glycolytic and fermentative enzymes: a simple hypothesis based on mRNA stability.
Although Zymomonas mobilis is prototrophic, glycolytic and fermentative enzymes (ethanologenic enzymes) constitute over half of the cytoplasmic protein. In this study, transcript stability, functional message pools, and the abundance of cytoplasmic products were compared for genes encoding eight of these essential enzymes. The transcripts of all were very st
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15. Effect of Specific Growth Rate on Fermentative Capacity of Baker’s Yeast
The specific growth rate is a key control parameter in the industrial production of baker’s yeast. Nevertheless, quantitative data describing its effect on fermentative capacity are not available from the literature. In this study, the effect of the specific growth rate on the physiology and fermentative capacity of an industrial Saccharomyces cerevisiae s
American Society for Microbiology.
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16. Immunocytochemical localization of glycolytic and fermentative enzymes in Zymomonas mobilis.
Gold-labeled antibodies were used to examine the subcellular locations of 11 glycolytic and fermentative enzymes in Zymomonas mobilis. Glucose-fructose oxidoreductase was clearly localized in the periplasmic region. Phosphogluconate lactonase and alcohol dehydrogenase I were concentrated in the cytoplasm near the plasma membrane. The eight remaining enzymes
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17. Ethanol production during batch fermentation with Saccharomyces cerevisiae: changes in glycolytic enzymes and internal pH.
During batch fermentation, the rate of ethanol production per milligram of cell protein is maximal for a brief period early in this process and declines progressively as ethanol accumulates in the surrounding broth. Our studies demonstrate that the removal of this accumulated ethanol does not immediately restore fermentative activity, and they provide eviden
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18. Gel electrophoretic analysis of Zymomonas mobilis glycolytic and fermentative enzymes: identification of alcohol dehydrogenase II as a stress protein.
The 13 major enzymes which compose the glycolytic and fermentative pathways in Zymomonas mobilis are particularly abundant and represent one-half of the soluble protein in exponential-phase cells. One- and two-dimensional polyacrylamide gel electrophoresis maps were developed for 12 of these enzymes. Assignments were made by comigration with purified protein
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19. Respiratory-competent conditional developmental mutant of Mucor racemosus.
A conditional developmental mutant of Mucor racemosus which is capable of oxidative energy metabolism is described. Unlike the wild-type strain the mutant was highly fermentative and exhibited the yeast morphology when grown aerobically in glucose-containing media. The high fermentative activity and yeast morphology under these conditions correlated well wit
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20. Glycolytic flux in Zymomonas mobilis: enzyme and metabolite levels during batch fermentation.
The rate at which Z. mobilis (Entner-Doudoroff pathway) converts high concentrations of glucose (20%) into ethanol plus CO2 changes as ethanol accumulates in the surrounding broth. This decline in glycolytic activity (per milligram of cell protein) does not result from inhibitory effects of ethanol, which can be reversed immediately by ethanol removal. The p
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21. Fermentative and aerobic metabolism in Rhizobium etli.
Strains of Rhizobium etli, Rhizobium meliloti, and Rhizobium tropici decreased their capacity to grow after successive subcultures in minimal medium, with a pattern characteristic for each species. During the growth of R. etli CE 3 in minimal medium (MM), a fermentation-like response was apparent: the O2 content was reduced and, simultaneously, organic acids
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22. Phospholipid composition and cardiolipin synthesis in fermentative and nonfermentative marine bacteria.
Twenty biochemically distinct isolates of marine bacteria, comprising a collection of gram-negative, motile, straight and curved rod-shaped organisms, were separated into fermentative and nonfermentative groups. The isolates were analyzed fro phospholipid composition and the activities of the enzymes, cardiolipin synthetase, and a phosphilipase were determin
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23. Genetic engineering of ethanol production in Escherichia coli.
The genes encoding essential enzymes of the fermentative pathway for ethanol production in Zymomonas mobilis, an obligately ethanologenic bacterium, were inserted into Escherichia coli under the control of a common promoter. Alcohol dehydrogenase II and pyruvate decarboxylase from Z. mobilis were expressed at high levels in E. coli, resulting in increased ce
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24. Activities of oxidative enzymes in mycoplasmas.
The activities of several oxidoreductases were measured in three fermentative and two nonfermentative Mycoplasma species that were grown under aerobic or anaerobic conditions. Acholeplasma laidlawii MG, Mycoplasma hyorhinis GDL, and Mycoplasma pneumoniae FH had very high apparent activities of pyruvate dehydrogenase and pyruvate dehydrogenase complex compare