中华鳖生化组成的分析──Ⅰ.一般营养成分的含量及肌肉脂肪酸的组成

BIOCHEMICAL COMPOSITIONS OF CHINESE SOFT-SHELLED TURTLE(TRIONYX SINENSIS)Ⅰ.Contents of normal nutrients and composition of muscle fatty acids

本文对中华鳖的稚鳖（体重11．5－18．0g）、一龄鳖（体重100.0－125．5g）、二龄鳖（体重220．0－263．0g）和三龄鳖（体重450．0－480．0g）的肌肉、背甲、裙边和油脂块等不同部位中的水分、灰分、蛋白质含量、脂肪含量及其肌肉中的脂肪酸的组成进行了分析，结果表明：中华鳖的肌肉、裙边和背甲中的蛋白质的含量高达18．33％－23．44％，脂肪含量较低。肌肉中高度不饱和脂肪酸含量占脂肪酸总量的32．69％，DHA（C22:6）与EPA（C20:5）分别占脂肪酸总量的8．30％和6．97％左右。本研究在分析与比较的基础上评价了中华鳖的营养价值和药用价值，为中华鳖配合饲料的开发提供了理论依据。

Contents of moisture, crude protein, lipid and crude ash were analysed in different parts of muscle, carapace, calipesh and fatty block of juvenile Chinese soft-shelled turtle (weight: 11.5- 18.0g), one-year old Chinese soft-shelled turtle (weight: 100.0- 125.5g), two-year old Chinese soft-shelled turtle (weight:220.0-263.0g) and three-year old Chinese soft-shelled turtle (weight: 450.0-480.0g), and so was the composition of fatty acids. The contents of crude protein in muscle, calipesh and carapace ranged from 18.33% to 24.74%. The contents of lipid in muscle、 calipash and carapace were fairiy low. The fatty acids in muscle contaned 32.39% highunsaturated fatty acids, among which EPA (C20:5 Eicosapentaenoil acid) was about 7% and DHA (C22:6 Docosaheraenoic acid) about 8% of tatal fatty acids.