Construction of killer industrial yeast Saccharomyces cerevisiae HAU-1 and its fermentation performance
Braz. j. microbiol
;
41(2): 477-485, Apr.-June 2010. tab
Article
in English
| LILACS
| ID: lil-545357
ABSTRACT
Saccharomyces cerevisiae HAU-1, a time tested industrial yeast possesses most of the desirable fermentation characteristics like fast growth and fermentation rate, osmotolerance, high ethanol tolerance, ability to ferment molasses, and to ferment at elevated temperatures etc. However, this yeast was found to be sensitive against the killer strains of Saccharomyces cerevisiae. In the present study, killer trait was introduced into Saccharomyces cerevisiae HAU-1 by protoplast fusion with Saccharomyces cerevisiae MTCC 475, a killer strain. The resultant fusants were characterized for desirable fermentation characteristics. All the technologically important characteristics of distillery yeast Saccharomyces cerevisiae HAU-1 were retained in the fusants, and in addition the killer trait was also introduced into them. Further, the killer activity was found to be stably maintained during hostile conditions of ethanol fermentations in dextrose or molasses, and even during biomass recycling.
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Index:
LILACS (Americas)
Main subject:
Saccharomyces cerevisiae
/
Yeasts
/
Molasses
/
Vitis
/
Fermentation
Language:
English
Journal:
Braz. j. microbiol
Journal subject:
Microbiology
Year:
2010
Type:
Article
Affiliation country:
India
Institution/Affiliation country:
CCS Haryana Agric/IN
/
University of Jammu/IN
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