1887

Abstract

SUMMARY: The effect of fatty acids on was dependent on the source of the inoculum, the growth phase and the washing of the bacteria. The effects of saturated fatty acids from C to C and oleic acid at two concentrations (0·1 and 0·4%, w/v) were determined on /154 growing exponentially in five different culture media. Depending on the media, 0·1 % fatty acids increased the doubling times of the cultures by up to 96 %. Fatty acids of medium chain length (C6 to C11) at 0·4 % produced a decrease in cell concentration, nonanoic and decanoic acids being the most effective. A correlation was found between the decrease in cell concentration and the loss of viability of the cultures after addition of 0·4 % decanoic acid, with stationary-phase bacteria being affected more than those from exponential-phase cultures. Experiments carried out with B and c gave results similar to those obtained with /154.

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/content/journal/micro/10.1099/00221287-91-2-233
1975-12-01
2021-05-16
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