Metabolic activities of Lactobacillus brevis. Effect of pH, glucose and butane-2,3-diol.
The effect of pH on the metabolic activities of Lactobacillus brevis was studied. Significant changes in the patterns of volatile components were found at pH 6. Butan-2-ol was formed; the concentration of propan-1-ol was increased by 38,5% at pH 6, 62% at pH 4.5, and 30% at pH 3.0. The effect of glucose and butane-2,3-diol on the production of volatile components was examined. It was shown that propan-1-ol was formed exclusively from glucose, whereas ethyl acetate, butan-2-ol and other unknown substances were formed from butane-2,3-diol. The course of ethyl acetate formation from butane-2,3-diol is discussed.
D000438:Alcohols / Q000378:metabolism; D001407:Bacillus / Q000187:drug effects; D002074:Butanones / Q000494:pharmacology*; D003931:Diacetyl / Q000494:pharmacology*; D005947:Glucose / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007778:Lactobacillus / Q000378:metabolism*
D000438:Alcohols; D002074:Butanones; D005947:Glucose; D003931:Diacetyl