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Biotechnol Lett. 2016 Apr;38(4):629-35. doi: 10.1007/s10529-015-2013-z. Epub 2015 Dec 14.

The use of chitooligosaccharide in beer brewing for protection against beer-spoilage bacteria and its influence on beer performance.

Author information

1
School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, People's Republic of China.
2
School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, People's Republic of China. xianzhen@mail.com.

Abstract

OBJECTIVES:

To identify a biological preservative that can protect beer from microbial contamination, which often results in the production of turbidity and off-flavor.

RESULTS:

The antimicrobial activity of a chitooligosaccharide against beer-spoilage bacteria and its effect on the fermentation performance of brewer's yeast was studied. Chitooligosaccharide with an average 2 kDa molecular weight was the best at inhibiting all tested beer-spoilage bacteria. The application of chitooligosaccharide in the brewing process did not influence the fermentation of brewer's yeast. The change in beer performance induced by the contamination of Lactobacillus brevis could be effectively controlled by application of chitooligosaccharide in the beer brewing process.

CONCLUSION:

The experimental data suggested that chitooligosaccharide should be an excellent preservative to inhibit beer-spoilage bacteria in the brewing process and in the end product.

KEYWORDS:

Antibacterial activity; Beer; Beer-spoilage bacteria; Chitooligosaccharide; Fermentation performance

PMID:
26667132
DOI:
10.1007/s10529-015-2013-z
[Indexed for MEDLINE]

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