Lipid Content and Fatty Acid Composition of Eriocheir sinensis at Different Stages of Growth

doi:10.7506/spkx1002-6630-201322035

Abstract

Abstract:

The lipid content and fatty acid composition of body meat, crab spawn and crab paste at different growth
stages (October, November and December) of E.sinensis were analyzed by Soxhlet extraction method and gas
chromatography (GC). The results showed that the lipid content showed a descending trend in the body meat of female
crab but an ascending trend in male crab. The highest lipid content was found in crab spawn and crab paste in October,
with the best quality at this growth stage, but descended as the growth proceeded; the lipid content was relatively lower
in body meat and indicated a higher level in female crab than in male one, while crab spawn and crab paste contained
a higher amount of lipids and the lipid content of crab paste was higher than that of crab spawn. Sixteen fatty acids
were detected in E.sinensis including 5 saturated fatty acids (SFA), 4 monounsaturated fatty acids (MUFA) and 7
polyunsaturated fatty acids (PUFA). Among these fatty acids, oleic acid (C18:1) was the most abundant and unsaturated
fatty acids had a higher proportion than saturated ones. According to the ω3/ω6 ratio recommended by the FAO/
WHO, the crab body meat and crab spawn in November and the crab paste in October were most beneficial to human
health. All the body meat, crab spawn and crab paste of E.sinensis at three growth stages had good nutritive quality as
indicated by the dominance of oleic acid.

Key words: Eriocheir sinensis, body meat, crab spawn, crab paste, lipid, fatty acid composition, gas chromatography (GC)

CLC Number:

TS201.4

TANG Chen-jing，SONGQIAN Cheng-hui，FU Na，LIU Yuan，TAO Ning-ping，WANG Xi-chang. Lipid Content and Fatty Acid Composition of Eriocheir sinensis at Different Stages of Growth[J]. FOOD SCIENCE, 2013, 34(22): 174-178.

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