In this study, 16 samples including 8 head samples and visceral samples of tuna species in central Vietnam coast are collected and serveyed the composition and content of fatty acids in the total lipid. | Journal of Science and Technology 54 (2C) (2016) 486-492 SURVEY ON TOTAL LIPID CONTENT AND COMPOSITION OFFATTY ACIDS FROM HEAD AND VISCERA OF TUNA Le Tat Thanh1, *, Le Xuan Duy1, Tran Quoc Toan1, Hoang Thi Bich1, Pham Thi Bien1, Nguyen Van Tuyen Anh1, Pham Thu Hue2, Dinh Nguyet Thu3, Pham Quoc Long1 1 Institute of Natural Products Chemistry – VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi 2 Vietnam Navy Academy, Ministry of Defence, 30 Tran Phu, Nha Trang, Khanh Hoa 3 Hanoi Open University, B101 Nguyen Hien, Hai Ba Trung, Hanoi * Email: Received: 15 June 2016; Accepted for publication: 29 October 2016 ABSTRACT In this study, 16 samples including 8 head samples and visceral samples of tuna species in central Vietnam coast are collected and serveyed the composition and content of fatty acids in the total lipid. The obtained results show that the total lipid content in the head samples range from % to % weight of fresh samples, particularly, the total lipid content of MT1 (head of Thunnusobesus) and VV1 (head of Thunnusalbacares) reached % and %. In visceral samples, the total lipid content ranges from % to % compared with the weight of fresh sample. We also identified 37 kinds of fatty acids, in which head samples of tuna are rich in fatty acids in the omega-3 group (from % to %). Especially DHA ranges from % to % and EPA ranges from % to %. Analysis results showed that omega-3 content in visceral samples less than head samples of tuna, their contents only reach from % to . The fatty acids content in the omega-6 group are the lowest and reach from % to %. Keywwords:tuna, total lipit, fatty acids, DHA, EPA. 1. INTRODUCTION In recent years, the fish industry, especially tuna, has been developing more and more strongly in Vietnam as well as the large quantities of fish exploited. The tuna processing industry produces more than 60 % by wasting products including head, skin,
