虾夷扇贝二倍体与三倍体脂肪酸组成的比较

Comparison of fatty acids composition between diploid and triploid Japanese scallop, Patinopecten yessoensis

摘要: 采用毛细管色谱柱对虾夷扇贝二倍体与三倍体的脂肪酸组成进行了检测.结果表明:①两者闭壳肌和外套膜的脂肪酸组成相似,特征为多烯酸(PUFA)》饱和脂肪酸(SFA)》单烯酸(MUFA),PUFA以n-3系列为主,主要脂肪酸为22:6n-3(23.9%～28.9%)、20:5n-3(17.6%～20.6%)、16:0(11.0%～19.4%)、18:0(7.3%～8.1%)、20-:4n-6(2.8%～5.5%);②生殖腺的脂肪酸种类相似,但两者多数脂肪酸的含量差异显著,其中三倍体的SFA和MUFA含量显著高于二倍体(P《0.01),而PUFA含量显著低于二倍体(P《0.01).

Abstract: By means of capillary gas chromatography column , fatty acids composition in diploid and trploid Japanese scallop ( Patinopecten yessoensis) was studied. The main results were as follows : ①The composition of fattyacidsinmuscleandmantlewassimilartobothscallops.Theywereall PUFA >SFA >MUFAandn23PUFA >n26PUFA. The main fatty acids were 22∶6n23(23.9%-28.9%) ,20∶5n23(17.6%-20.6%) ,16∶0(11. 0 % -19.4%) ,18∶0(7.3%-8.1%) and 20∶4n26(2.8%-5.5%); ②Diploid and triploid scallop had similar kinds of fatty acids in gonad ,but there were significant differences in the contents of fatty acids between the two scallops ,in which triploid scallop had significantly higher levels of SFA and MUFA ,but lower level of PUFA in gonad than those of diploid scallop ( P < 0. 01) .