Biocontrol of yeast spoilage in selected food and beverages by yeast mycocin

Valsaraj, Payini and Dubash, Taronish and Prakash, Peralam Yegneswaran (2012) Biocontrol of yeast spoilage in selected food and beverages by yeast mycocin. Acta Biologica Indica, 1 (1). pp. 109-112. ISSN 2279-0160

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Abstract

Yeasts constitute a highly heterogeneous group of unicellular organisms and have been most intimately associated with man from the dawn of his existence. Fruit juices contain various concentrations of sucrose, which constitutes a very important component of the medium for the growth of fungi. Dairy products are especially favorable environment for growth of yeasts due to the acidic reaction of the medium. Yeasts and molds can have both positive and negative effects on fermented food and beverages. Yeasts are used as the starter culture in various food and beverages products, but they can also initiate spoilage. Wild yeast contamination in the wine, beer processing or bread proving can retard fermentation and lead to serious problems including loss of yield in fermentation, foaming and scum formation. Many of these fermentative processes use non-pasteurized medium, which can allow the predominance of wild yeast strains coming from the raw material outnumbering the starter yeast. This contamination can bring about the sluggish fermentation process, increased acidity and fusel oil production with a subsequent decrease in productivity. These problems challenge the industries to look forward and contribute to the management of wild yeast contamination. Understanding the bio load of various yeast genera and their killer toxin effects could be utilized in food and beverage industry in order to maintain the food quality and security.

Item Type: Article
Additional Information: This paper won best paper award in this conference
Uncontrolled Keywords: Fermentation, Wild yeast strains, Mycocin, food quality
Subjects: Hotel Management > WGSHA Manipal
Depositing User: WGSHA EPrints Administrator
Date Deposited: 31 Mar 2012 04:52
Last Modified: 21 Aug 2012 06:34
URI: http://eprints.manipal.edu/id/eprint/3683

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