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Utilization of Fermented Barley Extract Obtained from a By-product of Barley Shochu for Nisin Production

Paper ID Volume ID Publish Year Pages File Format Full-Text
21922 43243 2008 5 PDF Available
Title
Utilization of Fermented Barley Extract Obtained from a By-product of Barley Shochu for Nisin Production
Abstract

Fermented barley extract (FBE) obtained from a barley shochu by-product (shochu kasu) and its ethanol fractions were evaluated as a medium and supplement, respectively, for nisin A production by Lactococcus lactis subsp. lactis ATCC 11454. A Brix 2.5 FBE medium supplemented with glucose provided a high level of nisin A production with a nisin yield comparable to that from a nutritionally rich laboratory medium (basal medium). By adding the ethanol-insoluble (EI) fraction of FBE to the basal medium, nisin A production was enhanced concomitant with an increase in bacterial cell growth, while the ethanol-soluble (ES) fraction had a negative effect on nisin A production. These findings indicate that FBE obtained from shochu kasu can be utilized as a preferable medium for nisin A production and could be converted into a value-added food product having preservative functions. The procedure developed in this study would promote recycling of shochu kasu.

Keywords
barley shochu; fermentation by-product; nisin production; lactic acid bacteria; ethanol precipitation; growth-stimulator
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 106, Issue 4, October 2008, Pages 393–397
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us