Results 141 to 150 of about 2,736 (170)

Thermotolerant yeasts and their biotechnological applications

Trends in Biotechnology
Most known yeasts are mesophilic organisms, with optimal growth at 28-30°C. However, a few species, notably Ogataea polymorpha and Kluyveromyces marxianus, can grow at temperatures around 50°C. Their thermotolerance is of both fundamental and applied interest, offering advantages for high-temperature bioprocesses.
Roksolana Vasylyshyn, Justyna Ruchala, Kostyantyn Dmytruk, Andriy Sibirny   +3 more
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Biomass production by a thermotolerant yeast: Hansenula polymorpha

Journal of Chemical Technology & Biotechnology, 1990
AbstractBiomass production at high temperature by Hansenula polymorpha as part of a lignocellulosic utilizing process was studied. Compromise growth conditions (45°C and pH = 4.8) with an eventual saccharification step were established. The effects of stirring rate and initial glucose concentration on biomass yield coefficient, volumetric productivity ...
J, Escalante, G, Caminal, C, de Mas
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Thermotolerance and barotolerance of alcohol-shocked yeast

2002
The acquisition of stress tolerance in response to a preconditioning alcohol shock treatment at various concentrations was studied using eight kinds of alcohols in the yeast Saccharomyces cerevisiae. Alcohol shock treatment induced tolerance against stresses such as high temperature and high pressure in yeast.
Kazuhiro Hisada, Yoshihisa Suzuki, Katsuhiro Tamura   +2 more
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Sodium Azide Reduces the Thermotolerance of Respiratively Grown Yeasts

Current Microbiology, 2002
The effect of sodium azide in heat shock-induced cell death was studied in Debaryomyces vanrijiae, Candida albicans, and Saccharomyces cerevisiae yeasts. The results presented demonstrate that the azide addition induced a drastic decrease in the thermotolerance of glucose-grown D. vanrijiae. In contrast, glucose-grown S. cerevisiae and C.
Eugene G, Rikhvanov, Nina N, Varakina, Tatyana M, Rusaleva, Elena I, Rachenko, Victor K, Voinikov   +4 more
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[Thermotolerant variants of wine yeasts].

Mikrobiologiia, 1980
Under the action of elevated temperature (37 degrees C), wine yeasts sported thermotolerant variants with respiration deficiency and increased fermentative function. The activity of dehydrogenase in the variants was also low. The sediment of Saccharomyces vini cells became dust-like instead of flocculent at 37 degrees C.
S A, Kishkovskaia, N I, Bur'ian
openaire   +1 more source

The Effect of Cytochrome Oxidase Inhibitors on the Thermotolerance of Yeasts

Microbiology, 2003
The investigation of the effect of the cytochrome oxidase inhibitors sodium cyanide and sodium azide on the thermotolerance of the yeasts Rhodotorula rubra, Debaryomyces vanriji, and Saccharomyces cerevisiae showed that these inhibitors diminish the thermotolerance of R. rubraand D. vanriji, but do not affect the thermotolerance of S.
E. G. Rikhvanov, N. N. Varakina, T. M. Rusaleva, E. I. Rachenko, V. K. Voinikov   +4 more
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Functional analysis of PGI1 and ZWF1 in thermotolerant yeast Kluyveromyces marxianus

Applied Microbiology and Biotechnology, 2020
Glycolysis and the pentose phosphate pathway (PPP) are two basic metabolic pathways that are simultaneously present in yeasts. As the main pathway in most species, the glycolysis provides ATP and NADH for cell metabolism while PPP, as a complementary pathway, supplies NADPH.
Biao Zhang, Lili Ren, Shuai Zeng, Siyang Zhang, Dayong Xu, Xin Zeng, Feng Li   +6 more
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Altered sterol composition renders yeast thermotolerant

Science, 2014
Tricks for boosting yeast's ethanol yieldsTo become a widely used source of fuel, widespread industrial production of ethanol using yeast needs to be simple and efficient. However, two conditions ideal for boosting production—tolerance of higher temperatures and high concentrations of ethanol—have been limiting (see the Perspective by Cheng and Kao ...
L. Caspeta, Y. Chen, P. Ghiaci, A. Feizi, S. Buskov, B. M. Hallstrom, D. Petranovic, J. Nielsen   +7 more
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Effect of amiodarone on thermotolerance and Hsp104p synthesis in the yeast Saccharomyces cerevisiae

Biochemistry (Moscow), 2012
Amiodarone (AMD) is known to induce a transient increase in cytosolic Ca2+ level in cells of the yeast Saccharomyces cerevisiae. In the present study the effect of AMD on the thermotolerance and Hsp104p synthesis of the yeast was studied. AMD induced Hsp104p synthesis and increased survival of the yeast after a severe heat shock (50°C). The development
I V, Fedoseeva, D V, Pjatricas, N N, Varakina, T M, Rusaleva, A V, Stepanov, E G, Rikhvanov, G B, Borovskii, V K, Voinikov   +7 more
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Optimization of the simultaneous saccharification and fermentation process using thermotolerant yeasts

Applied Biochemistry and Biotechnology, 1993
Different treatments to improve the thermotolerance of fermenting yeasts for simultaneous ethanol saccharification and fermentation process of cellulosic materials have been examined. Yeasts of the genera Saccharomyces and Kluyveromyces were tested for growth and fermentation at progressively higher temperatures in the range of 42-47 degrees C.
I, Ballesteros, J M, Oliva, M, Ballesteros, J, Carrasco   +3 more
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