Journal
PROCESS BIOCHEMISTRY
Volume 42, Issue 1, Pages 65-70Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.procbio.2006.07.011
Keywords
Lactobacillus; yeast; mixed culture; cereal; fermentation; probiotic
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The production of a new cereal-based probiotic foods with suitable aroma, flavor and pH using mixed culture fermentation has been investigated. This required the selection of suitable types of cereal grains and probiotic microorganisms. In a medium of 5% (w/v) malt suspension the effects of yeast presence on the fermentation of a lactic acid bacterium (LAB), Lactobacillus reuteri, was studied. With different inoculum ratios between the yeast and the LAB, the characteristics of the fermentation broth including pH and the contents of free amino nitrogen (FAN), reducing sugar, lactic acid and ethanol were investigated. It was found that LAB growth was enhanced by the introduction of the yeast. In mixed culture broth pH was lowered and the production of lactic acid and ethanol were increased in comparison against pure LAB culture. (c) 2006 Published by Elsevier Ltd.
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