Composition of lipids, fatty acids and sterols in Okinawan corals |
| |
Authors: | Hideyuki Yamashiro Hirosuke Oku Hideki Higa Isao Chinen Kazuhiko Sakai |
| |
Institution: | a Radioisotope Laboratory, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan;b Laboratory of Applied Biochemistry, Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan;c Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan |
| |
Abstract: | A survey of lipid composition was made for 15 cnidarians from Okinawa, Japan. Eleven zooxanthellate scleractinian corals, an azooxanthellate scleractinian coral Tubastrea sp., a soft coral Lobophytum crassum, a hydroid coral Millepora murrayi and a sea anemone Boloceroides sp. were examined to elucidate the total lipid content, fatty acid composition for each lipid class and sterol composition. All specimens contained monoalkyldiacylglycerol which migrated between the triacylglycerols and esters on thin layer chromatography (TLC). Analysis by high performance thin layer chromatography (HPTLC) and Gas chromatography-mass spectrometry (GC-MS) revealed that these cnidarians were rich in wax ester and triacylglycerol, and that palmitic acid (16:0) was the most abundant fatty acid component of these lipid classes, followed by stearic (18:0) and oleic (18:1, n-9) acid in order of concentration. Of 11 sterols separated, four sterols were identified. It is suggested that sterol composition may be more useful for the biochemical classification of these cnidarians than fatty acid composition. |
| |
Keywords: | Japan lipid composition sea anemone coral lipid sterol fatty acid wax |
本文献已被 ScienceDirect 等数据库收录! |
|