二化螟幼虫主要营养成分的测定与分析

本研究系统测定了二化螟幼虫矿物质、脂肪酸、氨基酸和蛋白质等主要营养成分，并采用国际上通用的评价方法对其营养进行评价。结果表明：虫体水分、灰分、脂肪、蛋白质和总糖含量分别为694.8、5.7、218.9、138.3和6.1g/kg；含Cu、Mn、Zn、Fe、Ca、K和Mg等多种矿物质元素；不饱和脂肪酸和饱和脂肪酸含量分别为303.2和93.7g/kg，必需脂肪酸含量仅为3.7g/kg；检测出包括7种人体必需氨基酸的17种氨基酸，总氨基酸含量为99.76g/kg，必需氨基酸分别占总氨基酸和非必需氨基酸的44.92%和81.55%，符合FAO推荐的理想蛋白模式，其第一限制性氨基酸为含硫氨基酸（蛋氨酸和胱氨酸），第二限制性氨基酸为缬氨酸；研究发现二化螟幼虫具较高的营养价值。

Determination and Analysis of the Main Nutritional Components of the larvae of the Rice Stem Borer, Chilo suppressalis Walker (Lepidoptera: Pyralidae)

important rice pests,the main nutritional components of the larvae were determined.Then the international general nutritional value assessment method was applied for the overall nutritional assessment of its protein.The results showed that the contents of water,ash,fat,protein and total sugar in the larvae were 694.8,5.7,218.9,138.3 g/kg and 6.1g/kg,respectively.The larvae also contained many kinds of valuable minerals,such as Cu,Mn,Zn,Fe,Ca,K and Mg.The contents of unsaturated fatty acids and saturated fatty acids were 303.2 g/kg and 93.7g/kg,respectively.But the content of essential fatty acid was only 3.7 g/kg.The larvae contained 17 amino acids and 7 the essential amino acids to human.The content of total amino acids was 99.76 g/kg,and the essential amino acids were 44.92% of the total amino acids while the percentage of the essential amino acids content to the nonessential amino acids was 81.55%.The first limiting amino acid of the larvae protein was the amino acid containing sulfur （Met＋Cys）,and the second limiting amino acid was Val.The study found that C.suppressalis larvae possessed the good nutritional value.