长肋日月贝的营养成分分析及评价

Analysis and evaluation of nutritional components of Amusium pleuronectes

对野生长肋日月贝(Amusium pleuronectes)的闭壳肌和贝肉其他部分的基本营养成分进行分析。结果表明:闭壳肌的平均质量分数为18.13%±2.15%,超过优良养殖海湾扇贝"中科红"。闭壳肌的蛋白质质量比(干质量)为847.62 g/kg,贝肉其他部分蛋白质质量比为662.50 g/kg。必需氨基酸与非必需氨基酸含量的比值在闭壳肌中为44.57%,在其他贝肉部分中的比值为44.12%。5种呈味氨基酸(谷氨酸、天冬氨酸、丙氨酸、脯氨酸、丝氨酸)在闭壳肌和其他贝肉部分中的含量分别占氨基酸总量的36.23%和38.21%。闭壳肌中还富含Mg、P、Zn和Se等矿物质和微量元素。

Nutritional components of Amusium pleuronectes were analyzed and evaluated.The proportion of ad-ductor muscle（AM） in body weight was 18.13%±2.15%.Crude protein in AM and the other part of shellfish meat（OPSM,in dry weight） were 847.62 g/kg and 662.50 g/kg,respectively.There were high level of Lys in shellfish meat,and the first restricted amino acid（AA） was Val.The ratios between essential AA and non-essential AA were 44.57% and 44.12% in AM and OPSM,respectively;and the proportions of 5 AAs（GLU,ASP,ALA,PRO,and SER） in gross AA were 36.23% and 38.21% in AM and OPSM,respectively.The nutritional value of AM was high because it contained high level of mineral contents and trace elements,such as Mg,P,Zn and Se.