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Effects of morphological changes in beer-spoilage lactic acid bacteria on membrane filtration in breweries

Paper ID Volume ID Publish Year Pages File Format Full-Text
22486 43291 2007 5 PDF Available
Title
Effects of morphological changes in beer-spoilage lactic acid bacteria on membrane filtration in breweries
Abstract

Membrane filter performance was investigated using beer-spoilage lactic acid bacteria (LAB). As a result, beer-adapted LAB strains showed considerably increased penetration rate through filters, as compared with non-adapted strains. Further statistical analyses demonstrated the significant shifts in cell size distribution towards shorter rods, when Lactobacillus brevis and L. lindneri strains were precultured in beer. These results indicate that diminished cell size is responsible for the deteriorated filter performance and, therefore, beer-adapted lactic acid bacteria are regarded as a serious threat to the production of unpasteurized beers. In addition, the selection of test strains and preculture conditions are suggested to be important for the rigorous and standardized evaluation of membrane filter performance in the brewing industry.

Keywords
beer spoilage; lactic acid bacteria (LAB); sterile filtration; viable but nonculturable state (VNC); Lactobacillus brevis; Lactobacillus lindneri
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Effects of morphological changes in beer-spoilage lactic acid bacteria on membrane filtration in breweries
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 104, Issue 4, October 2007, Pages 334–338
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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