期刊
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
卷 106, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jfca.2021.104271
关键词
Swimming crab; Mature females; Fullness; Amino acids; Fatty acids; Nutritional quality
资金
- Ministry of Science and Technology of China [2018YFD0900100]
- Bachelor Students from Shanghai Education Commission [S201710264013]
- North Jiangsu area from Science and Technology Department of Jiangsu Province [SZ-LYG202029]
- Shanghai Municipal Human Resources and Social Security Bureau [2018100]
- High level university in Shanghai from Shanghai Education Commission [A1-2801-18-1003]
- Collaborative Innovation Project for Mariculture industry in East China Sea from Ningbo University [A1-2801-18-1003]
This study investigated the chemical composition and nutritional quality of market size female Portunus trituberculatus. The results showed that the protein and lipid content in both ovaries and muscle increased significantly with fullness. Additionally, higher-graded females had higher total edible yield, color parameters, and better nutritional quality in edible tissues.
Ovary is an important edible component of female crabs in many countries, and ovarian fullness (maturity) had become an important quality indicator used for crab marketing. Adult females Portunus trituberculatus are typically divided into four grades (Grade I - IV) based on ovarian fullness in the carapace during the marketing. This study investigated the chemical composition and nutritional quality of market size female P. trituberculatus. The gonadosomatic index (GSI), hepatosomatic index (HSI) and total edible yield (TEY) showed a stepwise increase from Grade I to IV (P < 0.05). Crude protein and total lipid content in both ovaries and muscle significantly increased with fullness, where Grade II - IV had significantly higher lipid contents in the hepatopancreas compared to Grade I. Redness (a*) of carapace and ovaries was consistent with the total camtenoid contents in tissues. Sigma MUFA in both ovaries and muscle increased with crab grade, while Sigma PUFA in ovaries and muscle, as well as Sigma MUFA in the hepatopancreas decreased. For most amino acids in ovaries and muscle were also found to increase with grade. Higher-graded females generally had higher TEY, color parameters and better nutritional quality in edible tissues than the Grade I and II, which appears related to their different ovary stages of P. trituberculatus.
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