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Showing 1 to 10 of 10 for “"Pichia stipitis"”.
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Gewinnung von Gärungsmutanten der Hefe Pichia stipitis durch zufällige Integrationsmutagenese
… sugar in this material. The respiratory yeast Pichia stipitis examined in this dissertation is one of the best naturally occurring xylose fermenting organism known. However, P. stipitis shows a low ethanol tolerance and a low ethanol volumetric production rate in comparison to Saccharomyces …
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Zusammenhang zwischen dem Gärungsverhalten und dem Stickstoffmetabolismus in der Hefe Pichia stipitis
The yeast Pichia stipitis is of biotechnological importance because of her ability to ferment the sugar xylose to ethanol. This is not very widespread among yeast. Xylose can be obtained out if the wood composite hemicellulose, what makes wastes of paper and wood industry a possible source for …
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Zur Erfassung trans-wirksamer Komponenten der Sauerstoff-abhängigen Gärungsregulation der Hefe Pichia stipitis
… ScTRP5 as reporter genes was investigated. In P. stipitis the selection of Ura3- and Trp5-auxotrophic mutants on media containing 5-FOA respecttively 5-FAA was possible. As the introduction of the Ura3-auxotrophy into the transformation strain P. stipitis PJH53 his3-1 trp5-10 did not prove …
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Discovery and characterization of pentose-specific transporters in Saccharomyces cerevisiae
… from pentose assimilating fungal species Pichia stipitis and Neurospora crassa based on sequence homology with the glucose/xylose/H+ symporter (GXS1) in Candida intermedia. These transporters were cloned and heterologously expressed in S. cerevisiae and their sugar uptake activities were …
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Modificações genéticas em linhagem industrial de Saccharomyces cerevisiae para a fermentação de xilose
… iniciada uma análise transcricional da levedura Pichia stipitis (Scheffersomyces stipitis) CBS 5774 adaptada ao hidrolisado de bagaço de cana a fim de compreender a regulação em diferentes concentraçõesde xilose e glicose, além de selecionar um possível transportador de xilose para ser expresso …
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The potential of sorghum as a feedstock source for bioethanol production in Nigeria
… gas monitoring system. Another yeast, <i>Pichia stipitis</i> showed lower corresponding ethanol yields when fermenting sorghum grain mashes. Experiments were also conducted to convert sorghum lignocellulose residues (bagasse) to ethanol. Pre-treatment of the bagasse fractions followed by …
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Investigating the effects of pre-treatment of tropical seaweeds and freshwater macrophytes for bioenergy production
… of yeast namely, Saccharomyces cerevisiae, Pichia stipitis (aka Scheffersomyces stipitis) and Kluyveromyces marxianus. Findings show that S. stipitis yeast strain demonstrated the highest affinity to ferment the sugar rhamnose which was the dominant hydrolysate in seaweeds to produce 5.9 …
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Metabolic engineering of Saccharomyces cerevisiae for efficient ethanol production from pentose sugars
… and two xylose-specific transporters from Pichia stipitis and Neurospora crassa were identified. All transporters were functionally expressed and properly localized in S. cerevisiae as indicated by HPLC analysis and immunofluorescence microscopy, respectively. Overexpression of the …
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Enhanced bioethanol fermentation from mixed xylose and glucose using free and immobilized cultures: mathematical model and experimental observation
… or sequential culture e.g. Zymomonas mobilis and Pichia stipitis for efficient fermentation of glucose and xylose respectively. In this study, the dual micro-organism route is explored. There are numerous problems associated with co-culturing. Xylose, a non-preferred carbon source is only …