KOH solution in methanol. The FAMES were analysed in a gas
chromatograph HP-6890 II (Hewlett-Packard, Waldbronn, Germany),
with a capillary column SP-2380 (100m×0.25mm×0.20 μm), using
nitrogen as the carrier gas. Fatty acid composition was quantified
using heneicosanoic acid (C21:0) as the internal standard