ABSTRACT The lipid profiles, including lipid classes, phospholipid (PL) classes, fatty acid (FA) composition, and glycerophospholipid (GP) molecular species, in the two edible parts (edible viscera and muscles) of two species of cooked crabs (Portunus trituberculatus and Portunus pelagicus) were systematically characterized for the first time to reveal their nutritional values. For the muscles, PL (66.84–82.23% of total lipids) was the major component of lipids. While for the edible viscera, triacylglycerol (79.04–96.66% of total lipids) was the dominant lipid class. For all lipid samples, eicosapentaenoic acid (EPA) (3.47–22.02% of total FA) and docosahexaenoic acid (DHA) (7.30–16.52% of total FA) were the predominant FAs. Among PL from the crab muscles, phosphocholine (61.51–63.27 mol%) and phosphoethanolamine (21.58–23.43 mol%) were abundant. About 250 GP molecular species belonging to six classes, including glycerophosphocholine, lysoglycerophosphocholine, glycerophosphoethanolamine, lysoglycerophosphoethanolamine, glycerophosphoserine, and lysoglycerophosphoserine, were identified in crab muscles using direct infusion mass spectrometric method. A majority of the dominant molecular species of GP contained omega-3 polyunsaturated fatty acid, especially EPA and DHA. The useful information obtained in this study makes it possible to use crab lipid for producing higher value-added products for commercial exploitation.

中文翻译：

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三疣梭子蟹和远洋梭子蟹食用内脏和肌肉中脂质的详细分析

摘要 两种熟蟹（Portunus trituberculatus）的两个可食用部分（可食用内脏和肌肉）的脂质谱，包括脂质类别、磷脂 (PL) 类别、脂肪酸 (FA) 组成和甘油磷脂 (GP) 分子种类。和 Portunus pelagicus）首次被系统地表征以揭示它们的营养价值。对于肌肉，PL（总脂质的 66.84-82.23%）是脂质的主要成分。而对于食用内脏，甘油三酯（占总脂质的 79.04-96.66%）是主要的脂质类别。对于所有脂质样品，二十碳五烯酸 (EPA)（总 FA 的 3.47-22.02%）和二十二碳六烯酸（DHA）（总 FA 的 7.30-16.52%）是主要的 FA。在螃蟹肌肉的 PL 中，磷酸胆碱 (61.51–63.27 mol%) 和磷酸乙醇胺 (21.58–23.43 mol%) 含量丰富。使用直接输注质谱法在蟹肌肉中鉴定了约 250 种属于六类的 GP 分子种类，包括甘油磷酸胆碱、溶血甘油磷酸胆碱、甘油磷酸乙醇胺、溶血甘油磷酸乙醇胺、甘油磷酸丝氨酸和溶血甘油磷酸丝氨酸。GP 的大多数主要分子种类都含有 omega-3 多不饱和脂肪酸，尤其是 EPA 和 DHA。本研究中获得的有用信息使得使用蟹脂生产用于商业开发的高附加值产品成为可能。使用直接注入质谱法在螃蟹肌肉中鉴定。GP 的大多数主要分子种类都含有 omega-3 多不饱和脂肪酸，尤其是 EPA 和 DHA。本研究中获得的有用信息使得使用蟹脂生产用于商业开发的高附加值产品成为可能。使用直接注入质谱法在螃蟹肌肉中鉴定。GP 的大多数主要分子种类都含有 omega-3 多不饱和脂肪酸，尤其是 EPA 和 DHA。本研究中获得的有用信息使得使用蟹脂生产用于商业开发的高附加值产品成为可能。