Z. Dricicachon et al., EFFECT OF PH AND AGE OF CULTURE ON CELLULAR FATTY-ACID COMPOSITION OFLEUCONOSTOC-OENOS, Letters in applied microbiology, 22(5), 1996, pp. 331-334
This study is concerned with the fatty acid composition of three strai
ns of Leuconostoc oenos grown at different pH. The most abundant fatty
acids were C18: 1 omega(9), C19:0 cy(omega(9,10)) and C16:0, followed
by C16: 1 omega(9) and C14:0. The pH considerably modified the fatty
acid distribution in Lo107 (an acidophilic strain) and Lo8413 ( a mode
rately acidophilic strain). However, moderate changes occurred for LoA
TCC 23277 (a less acidophilic strain). At pH 2.9, Lo107 has a remarkab
ly high level of C19 : 0 cy-(omega(9,10)) and C19:0 cy(omega(11,12)).
Proportions of C18:1 and C19:0 cycle acids varied mainly with the pH o
f the medium and also as a function of growth phase. The degree of uns
aturation of fatty acids also varied with pH.