期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 126, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2020.109286
关键词
Eriocheir sinensis; Color; Carotenoids; Nutritional quality
资金
- key project of NSFC-Shandong province from the Natural Science Foundation of China [U1706209]
- Key R&D Program from Ministry of science and technology of China [2018YFD0900100]
- Shu Guang project from Shanghai Education Commission [17SG46]
- Shanghai Education Development Foundation [17SG46]
- Special Fund of Chinese Agriculture Research System from Ministry of Agriculture of China [CARS-48]
The raw carapace color of Eriocheir sinensis is normally greenblack, while a small percentage of wild crabs have a purple carapace that also attract a higher market price. This study was conducted to quantify color parameters, carotenoids composition, and nutritional composition between purple and greenblack crabs. The redness (a*) values, total astaxanthin and astaxanthin ester content (P < 0.05) of the carapace, hepatopancreas, and ovaries of purple crabs was significantly higher than those of greenblack crabs. Irrespective of sex, purple crabs had higher ester astaxanthin/total astaxanthin ratios in all tissues than greenblack crabs. Interestingly, female purple crabs had the significantly higher percentage of eicosapentanoic acid (EPA) and lower ratio of n-6/n-3 poly-unsaturated fatty acids (PUFA) in all edible parts than greenblack crabs, while male purple crabs had the significantly higher arachidonic acid (ARA) levels than greenblack crabs. In conclusion, purple crabs have the better nutritional quality than greenblack crabs.
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