Department of Food Science & Technology, Tokyo University of Marine Science and Technology, Minato, Tokyo 108-8477, Japan
We investigated the hydroxycinnamic acid derivatives in laminarian seaweeds. The total lipid was extracted from commercially available and dried laminarian seaweed according to the Bligh & Dyer method, and subjected to HPLC analysis for the determination of hydroxycinnamic acid derivatives. The structures were analyzed with EI-MS. Laminarian seaweeds contained relatively high amounts of γ-oryzanol, one of the hydroxycinnamic acid derivatives. Rishiri laminarian seaweed contained the highest amounts of γ-oryzanol among the analyzed 4 seaweeds. EI-MS fragment analyses of γ-oryzanol suggested that stigmasteryl ferulate was a prominent component in the seaweeds.