Maoka Takashi, Fujiwara Yasuhiro, Hashimoto Keiji, Akimoto Naoshige
Research Institute for Production Development, 15 Shimogamo-morimoto-cho, Sakyo-ku, Kyoto 606-0805, Japan.
J Agric Food Chem. 2007 Feb 21;55(4):1563-7. doi: 10.1021/jf063139n. Epub 2007 Jan 31.
Fucoxanthin and fucoxanthinol fatty acid esters in the clam, Mactra chinensis, were characterized on the basis of 1H NMR and FAB-MS spectra. 1H NMR revealed that the hydroxy group at C-3 in fucoxanthin and fucoxanthinol was acylated. 3'-O-Acylated compounds such as fucoxanthinol 3'-ester or fucoxanthinol 3,3'-diester were not found in the clam. The fatty acids esterified with fucoxanthin and fucoxanthinol were identified as C24:6, C22:5, C22:6, C20:5, C20:0, C20:1, C18:0, C18:1, C16:0, C16:1, and C14:0 by FAB-MS data.
基于1H NMR和FAB-MS光谱对中国蛤蜊(Mactra chinensis)中的岩藻黄质和岩藻黄醇脂肪酸酯进行了表征。1H NMR显示,岩藻黄质和岩藻黄醇中C-3位的羟基被酰化。在蛤蜊中未发现3'-O-酰化化合物,如岩藻黄醇3'-酯或岩藻黄醇3,3'-二酯。通过FAB-MS数据确定,与岩藻黄质和岩藻黄醇酯化的脂肪酸为C24:6、C22:5、C22:6、C20:5、C20:0、C20:1、C18:0、C18:1、C16:0、C16:1和C14:0。