a decrease in the growth temperature from 43 degrees c to 15 degrees c resulted in a decrease in the palmitic acid content of the lipopolysaccharide from 19.4 % of total fatty acids at 43 degrees c to 1.4 % at 15 degrees c , and by the appearance of an unsaturated fatty acid residue , hexadecenoic acid .
C0015684
fatty acids
C0015690
unsaturated fatty acid