6种常见食用蜻蜓稚虫含油率与脂肪酸组成分析

发布时间：2018-07-08 17:56

本文选题：食用蜻蜓稚虫 + 含油率　；参考：《中国油脂》2017年03期

【摘要】：为评价6种云南和贵州地区常见食用蜻蜓稚虫油脂的营养价值,采用索氏提取法和GC-MS分析和比较了闪蓝丽大蜻、碧伟蜓、小团扇春蜓、黄蜻、大团扇春蜓、赤褐灰蜻6种蜻蜓稚虫的含油率和油脂脂肪酸组成。结果表明:6种蜻蜓稚虫含油率为5.72%~11.90%,其中大团扇春蜓的含油率最高,赤褐灰蜻的最低。6种蜻蜓稚虫油脂分别鉴定出18~29种脂肪酸,其中包括奇数碳脂肪酸、二十碳五烯酸(EPA)和二十二碳六烯酸(DHA)等具有特殊功能的脂肪酸;不饱和脂肪酸(UFA)占脂肪酸总量的61.50%~65.22%,多不饱和脂肪酸(PUFA)占UFA总量的29.57%~50.00%,棕榈酸相对含量最高,为17.57%~24.61%;n-6 PUFA与n-3 PUFA比值为0.68~1.30,接近淡水鱼类,黄蜻和赤褐灰蜻的饱和脂肪酸(SFA)、单不饱和脂肪酸(MUFA)和PUFA的含量之比分别为1.17∶1.2∶1和1.3∶1.18∶1,接近北大西洋公约组织和美国心脏协会推荐的人体摄入比(1∶1.5∶1和(0.8~1)∶1.5∶1)。
[Abstract]:In order to evaluate the nutritive value of oil and fat of 6 common edible larvae of dragonfly in Yunnan and Guizhou regions, Soxhlet extraction method and GC-MS were used to analyze and compare the oil content of Odonata grandiflorus, Vigna biginifera, Cymophora fargesii, yellow dragonfly and Dendrophylla macrocephala. Oil content and fatty acid composition of 6 species of dragonfly larvae. The results showed that the oil content of 6 species of young dragonfly was 5.72% and 11.90%, among which the oil content was the highest among them, and 1829 kinds of fatty acids, including odd carbon fatty acids, were identified from the lowest 6 species of oil of dragonfly, the lowest of 6 species of dragonfly in red brown dragonfly. Eicosapentaenoic acid (EPA) and 22 carbohexaenoic acid (DHA) have special function fatty acids, unsaturated fatty acids (UFAs) account for 65.22% of the total fatty acids, polyunsaturated fatty acids (PUFAs) account for 29.57% of the total UFAs, palmitic acid is the highest. The ratio of 17.57% to 24.61% of n-6 PUFA to n-3 PUFA was 0.68 ~ 1.30, which was close to freshwater fish, The ratios of saturated fatty acids (SFA), monounsaturated fatty acids (MUFA) and PUFA were 1.17: 1.2: 1 and 1.3: 1.18: 1, respectively, which were close to those recommended by the North Atlantic Treaty Organization (NATO) and the American Heart Association (1). 1. 1: 1 and (0. 8: 1): 1.
【作者单位】：中国林业科学研究院资源昆虫研究所;国家林业局资源昆虫培育与利用重点实验室;
【基金】：中央级公益性科研院所基本科研业务费专项资金项目(riricaf2014002Z)
【分类号】：R151

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