Results 181 to 190 of about 8,229 (215)

Construction of thermotolerant yeast expressing thermostable cellulase genes

Journal of Biotechnology, 2007
Kluyveromyces marxianus NBRC1777 was identified as a thermotolerant yeast and was developed as a host for the expression of thermostable cellulase genes. The previously isolated genes for thermostable endo-beta-1,4-glucanase, cellobiohydrolase, and beta-glucosidase were introduced into the chromosome of K. marxianus and successfully expressed under the
Jiong Hong, Yong-Hong Wang, Hidehiko Kumagai   +2 more
exaly   +3 more sources

The Effect of Sodium Malonate on Yeast Thermotolerance

Microbiology, 2003
The study of the effect of malonate (an inhibitor of the succinate dehydrogenase complex of the respiratory chain of mitochondria) on the thermotolerance of the fermentative Saccharomyces cerevisiae and nonfermentative Rhodotorula rubra yeasts showed that malonate augmented the damaging effect of heat shock on the yeasts utilizing glucose (or other ...
E G, Rikhvanov, N N, Varakina, T M, Rusaleva, E I, Rachenko, V K, Voĭnikov   +4 more
openaire   +2 more sources

Ethanolic fermentation by thermotolerant yeasts

Journal of Chemical Technology and Biotechnology. Biotechnology, 1985
AbstractThe abilities of three thermotolerant yeast strains to ferment cane juice and molasses to ethanol were examined. Two of the strains gave adequate yields of ethanol both at 30°C and 40°C. One strain (a Candida tropicalis) proved superior to the other two having fermentation efficiencies of 92.6% and 90.4% on cane juice medium and 98% and 96% on ...
Rita Kar, Laxmikanthrao Viswanathan
openaire   +1 more source

Physiological and biochemical characterization of intergeneric hybrids of thermotolerant and non‐thermotolerant yeasts

Journal of Basic Microbiology, 1997
AbstractKluyveromyces‐like intergeneric hybrids of thermotolerant Kluyveromyces marxianus and non‐thermotolerant Saccharomyces cerevisiae, produced in a previous study by protoplasmic fusion, have been characterized. On molasses, these strains produced ethanol in excess of 6% (v/v) both at 30 and 45 °C as against 3% and 4.2% (v/v) by the former parent ...
S S, Dhamija, R, Gera, D K, Singh, D, Singh, R, Marchant   +4 more
openaire   +2 more sources

Ethanol and thermotolerance in the bioconversion of xylose by yeasts

2000
The mechanisms underlying ethanol and heat tolerance are complex. Many different genes are involved, and the exact basis is not fully understood. The integrity of cytoplasmic and mitochondrial membranes is critical to maintain proton gradients for metabolic energy and nutrient uptake. Heat and ethanol stress adversely affect membrane integrity.
T W, Jeffries, Y S, Jin
openaire   +2 more sources

Rapid growth of a thermotolerant yeast on palm oil

World Journal of Microbiology and Biotechnology, 1993
A thermotolerant and rapidly-growing yeast for production of single cell protein from palm oil was isolated and identified as Candida tropicalis F129. The optimum temperature and pH for growth were 38°C and 6.0, respectively. The yeast grew with a high specific growth rate, of 0.92/h in 2% (v/v) palm oil medium, compared with other oil-assimilating ...
Yamakawa, T., Kodama, T., Lee, Chia-Yin
exaly   +3 more sources

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
openaire   +2 more sources

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
openaire   +2 more sources

[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

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
openaire   +2 more sources