Effect of environmental pH on fermentation balance of Lactobacillus bulgaricus

DOI Web Site 被引用文献3件

書誌事項

公開日
1980-10
権利情報
  • https://journals.asm.org/non-commercial-tdm-license
DOI
  • 10.1128/jb.144.1.217-221.1980
公開者
American Society for Microbiology

この論文をさがす

説明

<jats:p>When Lactobacillus bulgaricus NLS-4 was grown anaerobically in continuous culture with limiting glucose, a shift in the pH of the medium from the acidic to the alkaline range caused this normally homofermentative bacterium to catabolize glucose in a heterofermentative fashion. The change in the nature of the fermentation was accompanied by a decrease in lactate dehydrogenase biosynthesis in alkaline conditions. The lactate dehydrogenase from this organism did not require fructose 1,6-diphosphate or manganese ions (Mn2+) for catalytic activity. Involvement of the phosphoroclastic split in the pyruvate conversion in an alkaline environment was also confirmed. The high lactate dehydrogenase synthesis in acidic medium together with the participation of the phosphoroclastic split under alkaline conditions may explain the shift from homolactic to heterolactic fermentation of L. bulgaricus NLS-4 with the change of environmental pH.</jats:p>

収録刊行物

被引用文献 (3)*注記

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ