The stereoselectivity of the use of lactic acid byClostridium tyrobutyricum

摘要: Abstract A study of the factors influencingClostridium tyrobutyricumgrowth is necessary to improve control butyric fermentation and avoid late blowing during cheese making. Lactic acid, one substrates this present in two optical forms cheeses their relative amounts may be a controlling factor. In order determine whether these proportions could influenceC. tyrobutyricumgrowth, micro-organism was inoculated culture media containing different isomers. racemic mix, results show consumption 90% D (−) 25% L (+) lactic acid exponential growth phase. When both isomers are present,C. tyrobutyricumpreferentially uses if only its rate three times higher with than isomer.