Các mẫu san hô mềm Sinularia flexibilis thu thập trong tháng 2, 5, 8, 11 tại vùng biển Nha Trang, Khánh Hòa. Hàm lượng các dạng phân tử trong lớp chất phosphatidylethanolamine trong lipid các mẫu san hô thu được đã được xác định. Nhận dạng được 14 dạng phân tử PE, trong đó dạng phân tử alkenylacyl PE 18:1e/20:4 có hàm lượng cao nhất, dao động từ 51,35–63,16% trong 4 mẫu, cao nhất ở mẫu thu tháng 8 và thấp nhất ở mẫu thu tháng 11. | Vietnam Journal of Marine Science and Technology Vol. 21 No. 2 2021 215 222 DOI https 1859-3097 16243 http jmst Study the molecule species of phosphatidylethanolamine class in soft coral Sinularia flexibilis lipid at different times of the year Dang Thi Phuong Ly1 2 Pham Minh Quan1 2 Nguyen Thi Nga1 2 Trinh Thi Thu Huong1 2 Andrey Imbs Borisovich3 1 Institute of Natural Products Chemistry VAST Vietnam 2 Graduate University Science and Technology VAST Vietnam 3 National Scientific Center of Marine Biology Far-Eastern Branch of the Russian Academy of Sciences Vladivostok Russian Federation E-mail phuongly1412@ Received 11 November 2020 Accepted 6 February 2021 2021 Vietnam Academy of Science and Technology VAST Abstract Samples of soft coral Sinularia flexibilis were collected in February May August November in Nha Trang Khanh Hoa. The content of molecular species in phosphatidylethanolamine class in the lipid of obtained coral samples has been determined. Identified 14 types of PE molecule species in which the alkenylacyl PE 18 1e 20 4 has the highest concentration ranging from to in 4 samples the highest and lowest concentrations were in a sample collected in August and November respectively. Samples collected in August and May have a lower diacyl PE ratio than samples collected in November and February. This study identified the lowest alkylacyl and the highest alkenylacyl concentration in a sample collected in August. The fatty acids present in this class are 17 1 18 1 18 2 19 1 20 4 and 24 5. The percentage of the total content of molecule species by each fatty acid is similar between months. The total content of molecule species containing 20 4n fatty acids was of the PE class and the difference was not significant in 4 coral samples. There was an inverse correlation between the total content of molecule species containing 20 4n PUFA and the total content of 20 4n fatty acid and the .
