Isolation of Indigenous Yeast Strains and Screening for Economically Important Properties
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Date
2012
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Publisher
Uva Wellassa University of Sri Lanka
Abstract
The yeast is used to ferment carbohydrate substrate present in sugarcane iTiolassss for tile production of ethanol. Molasses-based alcohol production is one of the major sugarcane base industries in Sri Lanka. Distillery of each sugar factory consumes all the molasses produced as co-products of sugar production and for ethyl alcohol production. This is directly influences the economic viability of the Sri Lankan sugar industry. However, elsewhere in the world resulting in high production costs and loss of potential revenue.
The use of inferior yeast cultures is one of the major reasons for low fermentation efficiencies in Sri Lankan alcohol distilleries that use sugarcane molasses. The ‘ideal’ etha‹1oI producing yeast should possess fermentation and growth properties such as fast fermentation rates, high ethanol yields, high ethanol tolerance, low pH, and high temperature tolerance for fermentation. Use of efficient yeast strains improve ethanol yields iii the fermented wash would reduce distillation costs and hence the profitability of the overall process.( Chen, M. and Chen, J .C.P., 1985).
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Keywords
Export Agriculture, Principle of Agro food process Technology