3个中华圆田螺养殖群体的肌肉营养成分分析

Analysis of muscle nutritional components of three cultured populations of Cipangopaludina cathayensis

试验旨在研究和分析3个养殖群体中华圆田螺(Cipangopaludina cathayensis)肌肉常规营养成分、氨基酸、脂肪酸和矿物元素组成和含量,为中华圆田螺的种质资源开发利用提供参考。3个养殖群体选取180只平均体重为(32.12±0.17) g的中华圆田螺,随机分为3组,每组60只,去壳后取肌肉检测其营养成分。结果表明:陆川县群体的中华圆田螺肌肉粗蛋白、氨基酸总量、必需氨基酸总量和鲜味氨基酸总量均显著高于其他群体(P<0.05)。柳江区群体的氨基酸评分、化学评分和必需氨基酸指数最高。陆川县群体肌肉中不饱和脂肪酸和多不饱和脂肪酸含量均显著高于其他群体,且动脉粥样硬化指数(IA)、血栓形成指数(IT)均低于其他群体(P<0.05),3个群体的Σn-3/Σn-6 PUFA比值均符合FAO/WHO推荐人类饮食推荐值(0.1~0.2)。融水县群体肌肉中的P、Ca含量显著高于其他群体(P<0.05)。研究表明,3个养殖群体中华圆田螺肌肉中蛋白质含量均较高,脂肪含量较低,鲜味氨基酸和不饱和脂肪酸含量较高,陆川县群体肌肉的营养价值优于其他群体。

The purpose of this study was to study and analyze the composition and content of routine nutrients,amino acids,fatty acids,and mineral elements in muscle of three cultured populations of Cipangopaludinacathayensis,so as to provide a reference for the development and utilization of Cipangopaludinacathayensis germplasm resources.A total of 180 Cipangopaludinacathayensiswith an average weight of(32.12±0.17)g were randomly divided into three groups with 60 Cipangopaludinacathayensisin each group.After shelling,the muscles were taken to test their nutritional components.The results showed that the crude protein,total amino acids,essential amino acids,and delicious amino acids in muscle of Luchuan County population were significantly higher than those of other populations(P<0.05).The amino acid score,chemical score,and essential amino acid index of Liujiang population were the highest.The contentrations of unsaturated fatty acids and polyunsaturated fatty acids in muscle of Luchuan County population were significantly higher than those of other populations,and the atherosclerosis index(IA)and thrombosis index(IT)were lower than those of other populations(P<0.05).The ratio of sigma-n-3/sigma-n-6PUFA of the three populations was in line with the recommended value of FAO/WHO for human diet(0.1~0.2).The contentrations of P and Ca in muscle of Rongshui County population were significantly higher than those of other populations(P<0.05).The study indicates that the muscle protein content of the three cultured populations is higher,the fat content is lower,and the delicious amino acids and unsaturated fatty acids are higher.The nutritional value of the muscle of Luchuan County population are better than those of other populations.