Journal
FISHERIES SCIENCE
Volume 80, Issue 3, Pages 621-633Publisher
SPRINGER JAPAN KK
DOI: 10.1007/s12562-014-0738-6
Keywords
Chinese mitten crab; Fatty acid; Amino acid; Nutritional value
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Funding
- Industrial System Project of Chinese Mitten Crab of Shanghai Municipal Agriculture Commission [D-8003-10-0208]
- Training Program of Excellent Graduation Thesis of Shanghai Ocean University [B-9600-10-0003-3, B-9600-12000110]
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The fatty acid and amino acid compositions of different grades of steamed Chinese mitten crab were analyzed. In total, 37 types of fatty acid were identified and quantified, with monounsaturated fatty acids and polyunsaturated fatty acids (PUFAs) constituting approximately 70 % of all fatty acids. Oleic acid, palmitic acid, and linoleic acid were dominant with approximately 30, 20, and 10 % of overall contents, respectively. The highest levels of fatty acids were found in special-grade animals, followed by first-grade and second-grade samples. The ratio of n-3/n-6 PUFAs ranged from 0.54 to 2.64, showing Eriocheir sinensis to be rich in n-3 PUFAs. In addition, claw and body meat were rich in amino acids and essential amino acids (EAA), while leg meat had higher content of flavor amino acids (FAA). Among almost all amino acids, the highest levels were found in Eriocheir sinensis of special grade, then first and second grade. On the whole, our results indicate that special-grade Eriocheir sinensis is highly nutritious due to its high levels of fatty acids and amino acids.
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