6个不同产地瘤背石磺肌肉脂质及脂肪酸组成分析与比较  

Lipids and fatty acids composition and compare in the edible mass of six origins in Onchidium struma

作　　者：姚理想 沈和定[1] 李柏航 朱敏[1] 李炼星 

机构地区：[1]上海海洋大学省部共建水产种质资源发掘与利用教育部重点实验室,上海201306

出　　处：《海洋渔业》2017年第2期206-215,共10页Marine Fisheries

基　　金：国家自然科学基金项目(41276157);上海高校水产学一流学科建设项目

摘　　要：为比较不同产地瘤背石磺(Onchidium struma)肌肉脂质和脂肪酸组成的差异性,采用气相色谱-质谱法(GC-MS)对6个不同产地(分别为江苏省盐城市亭湖区和大丰市、上海市浦东新区和崇明县、浙江省温州市苍南县、福建省厦门市)的瘤背石磺肌肉脂肪酸组成进行了分析研究。结果显示:(1)瘤背石磺肌肉磷脂/总脂(PL/TL)崇明产高达(74.84±1.38)%,显著高于其它产地的瘤背石磺(P<0.05);各产地瘤背石磺肌肉中胆固醇/总脂(Cho/TL)和甘油三酯/总脂(TG/TL)含量差异不明显;苍南产瘤背石磺游离脂肪酸/总脂(FFA/TL)含量最高;(2)苍南产瘤背石磺的总饱和脂肪酸(ΣSFA)含量显著高于其它产地石磺(P<0.05),总单不饱和脂肪酸(ΣMUFA)和总多不饱和脂肪酸[ΣPUFA(≥18∶2n)]显著低于其它产地石磺,其它5个产地ΣMUFA含量差异较小,各产地ΣPUFA和总高不饱和脂肪酸[ΣHUFA(≥20∶3n)]含量差异较大。浦东产瘤背石磺肌肉的C20∶5n3(EPA)、C22∶6n3(DHA)、ΣPUFA、ΣHUFA均显著高于其它产地石磺(P<0.05)。研究表明,6个产地瘤背石磺肌肉中脂质及脂肪酸组成存在较大差异,上海和盐城两地的瘤背石磺含有丰富的人体必需脂肪酸,且DHA+EPA含量较高,营养价值丰富;苍南和厦门两产地的瘤背石磺具有含量较高且有特殊生理活性的脂肪酸。Onchidium struma, one kind of economic shellfish with high nutritional and medicinal value, has a long eating history in Jiangsu, Zhejiang and other coastal areas. 0. struma can treat a series of diseases according to the drug dictionaries. They once widely distributed only in our country, but in recent years, their quantities and habitats have been reducing due to the environmental pollution, construction along the coast and over exploitation. On the other hand, the artificial breeding technologies for O. struma are still in the developing stage, and large-scale artificial breeding has not been realized. Therefore, the rational development and utilization of O. struma are particularly important. Lipid and fatty acid composition of O. struma in Yancheng, Shanghai, Wenzhou, Xiamen and other places have been analyzed by ascorbic acid- molybdenum blue colorimetric method, copper soap colorimetric method and GC-MS method in order to compare and analyze the differences of lipid and fatty acid composition of O. struma from different regions. The results showed that ： （ 1 ） the total muscle fat of O. struma was mainly composed of phospholipids （ PL）, free fatty acid （FFA）, cholesterol （Cho） and triglyceride （TG）. The PL/TL of O. struma from Chongming was （74.84±1.38）% which was significantly higher than those from the other 5 places （P 〈0.05）. The differences of the content of Cho / TL and TG / TL of O. struma from 6 places were insignificant （ P 〉 0.05 ）. The FFA/TL of O. struma from Cangnan was the highest, twice as that from Pudong. （2） The content of total monounsaturated fatty acid （EMSFA） of O. struma from Cangnan was significantly higher than those from the other palces （P 〈 0.05 ）. The differences of the contents of total monounsaturated fatty acid （EMSFA） of O.struma from 6 places is insignificant （ P 〉 0.05 ）. The order of EMUFA proportion from high to low was ： 20.63% （Pudong） 〉 20. 49% （Tinghu） 〉 19. 61% （Xiamen） 〉 19. 42% （

关 键 词：瘤背石磺 脂质 脂肪酸 GC-MS 

分 类 号：TS254.9[轻工技术与工程—水产品加工及贮藏工程]