title: The influence of mutagenic chemicals on lactic acid fermentation by Lactobacillus bulgaricus AU.
abstract: Lactic acid fermentation from molasses by L. bulgaricus AU in the presence of caffeine and ammonium fluoride was studied. It was found that caffeine had a stimulating effect only at lower concentration (0.001%-0.002%), while at high concentration the acid-producing activity of the bacteria was considerably depressed. Ammonium fluoride, at a concentration of 0.001%-0.005%, had a stimulating effect on the activity of the bacteria, maximum activity was observed at a concentration of 0.003%.
mesh_terms: D064751:Ammonium Compounds; D002110:Caffeine / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005285:Fermentation / Q000187:drug effects; D005459:Fluorides / Q000494:pharmacology*; D007773:Lactates / Q000096:biosynthesis*; D007778:Lactobacillus / Q000187:drug effects / Q000378:metabolism*; D008965:Molasses; D009153:Mutagens; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology*
chemical_list: D064751:Ammonium Compounds; D007773:Lactates; D009153:Mutagens; D000644:Quaternary Ammonium Compounds; D002110:Caffeine; C024822:ammonium fluoride; D005459:Fluorides