Journal
JOURNAL OF APPLIED MICROBIOLOGY
Volume 115, Issue 6, Pages 1379-1387Publisher
WILEY
DOI: 10.1111/jam.12329
Keywords
barley malt wort; exopolysaccharides; functional beverages; heterofermentative lactic acid bacteria; oligosaccharides
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Funding
- Irish National Development Plan, through the Food Institutional Research Measure
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AimsThe growing interest of governments and industry in developing healthy and natural alternative foods and beverages that will fulfil the consumer drive towards a healthy lifestyle and clean-label, natural diet has led to an increase in traditional lactic acid bacteria fermentation research. In particular, this research aims to address the organoleptic modulation of beverages using in situ-produced bacterial polysaccharides. Methods and ResultsWeissella cibaria MG1 is capable of producing exopolysaccharides (dextran) and oligosaccharides (glucooligosaccharides) during sucrose-supplemented barley-malt-derived wort fermentation. Up to 364g l(-1) of dextran was produced in an optimized system, which improved the rheological profile of the resulting fermentate. Additionally, small amounts of organic acids were formed, and ethanol remained below 05%(v/v), the threshold volume for a potential health claim designation. ConclusionsThe results suggest that the cereal fermentate produced by W.cibaria MG1 could be potentially used for the production of a range of novel, nutritious and functional beverages. Significance and Impact of the StudyUsing conventional raw materials and traditional processes, novel LAB-fermented beverages can be produced representing an innovative mechanism towards fulfilling the aim to decrease government and personal costs as well as potentially ameliorating consumer lifestyle regarding dietary-related disease.
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