Premium
Fatty Acid Profiles of Triacylglycerols and Phospholipids of Sea‐Cage Cultured Trachinotus blochii : A Comparative Study of Head, Viscera, Skin, Bone, and Muscle
Author(s) -
He Chen,
Cao Jun,
Jiang Xin,
Wen Chunyan,
Bai Xinpeng,
Li Chuan
Publication year - 2019
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/1750-3841.14458
Subject(s) - polyunsaturated fatty acid , palmitic acid , oleic acid , fatty acid , food science , biology , biochemistry , docosahexaenoic acid , chemistry
Trachinotus blochii (golden pompano) is an economically important cultured marine fish that is rich in polyunsaturated fat. The fatty acid profiles of triacylglycerols and phospholipids of T. blochii tissues were analyzed. Lipid contents in tissues followed the order of viscera (28.27%) > skin (17.25%) ≈ bone (16.18%) ≈ head (15.12%) > muscle (7.38%). In triacylglycerols (TAG), saturated fatty acids (palmitic acid predominated) were preferentially esterified in the sn‐2 position, and monounsaturated fatty acids (oleic acid predominated) were mainly distributed in the sn‐1, 3 positions. The numbers of n‐3 polyunsaturated fatty acids (PUFA) in the sn‐2 position were significantly greater than those in positions 1 and 3, while the n‐6 PUFA were mainly found in the sn‐1, 3 positions. Muscle TAG had a higher content of EPA+DHA (3.90%) than did the other tissues. In phosphatidylethanolamines, EPA+DHA in muscle (6.76%) predominated over that in other tissues. In phosphatidylcholines, EPA+DHA in bone (6.50%) predominated. This study is a guide for the biochemical and nutritional values of the T. blochii species and can be useful for further investigation of industrial applications. Practical Application The high proportion of sn‐2‐palmitic acid (greater than 50%) is close to that of breast milk and the n‐3 PUFA, especially EPA and DHA have the preferential distribution in the sn‐2 position of triacylglycerol. Hence, golden pompano is an excellent dietary component for human nutrition and health.