3个不同地理群体翘嘴鳜肌肉营养品质评价

Evaluation of muscle nutritional quality of 3 kinds of different geographic groups of Siniperca chuatsi

目的通过综合分析比较翘嘴鳜太湖群体与广东群体、秋浦群体等不同来源地的翘嘴鳜肌肉的营养成分,评价浙江省培育的太湖群体的营养价值。方法通过测定翘嘴鳜肌肉的质构、基本营养成分、氨基酸、脂肪酸、挥发性风味物质指标,综合评价分析太湖群体的营养价值优势和不足。结果太湖群体与广东群体、秋浦群体相比,基本营养成分方面水分最高,氨基酸方面必需氨基酸含量占比(30.91%)、甜味氨基酸含量占比(19.16%)最高,脂肪酸方面有6种饱和脂肪酸、4种单不饱和脂肪酸和3种多不饱和脂肪酸的含量比例较高,风味物质方面己醛(11.83%)和1-辛烯-3-醇(5.80%)的含量占比是最低的。从质构指标来看,太湖群体的肉质更有嚼劲。结论翘嘴鳜太湖群体在氨基酸、脂肪酸、风味物质组成等方面具有一定的优势,本研究结果将为翘嘴鳜养殖业可持续发展提供数据参考。

Objective To evaluate the nutritional value of the Taihu Lake population cultivated in Zhejiang Province by comprehensively analyzing and comparing the nutrient composition of the muscles of Siniperca chuatsi from different sources,like Guangdong population,Qiupu population and Taihu population.Methods By determining the textural properties,basic nutrients,amino acids,fatty acids and volatile flavor substances of Siniperca chuatsi muscle,the advantages and disadvantages of nutritional value of the Taihu Lake population were comprehensively evaluated and analyzed.Results Compared with the Guangdong population and Qiupu population,the Taihu population had the highest water content,the highest proportion of essential amino acids(30.91%)and sweet amino acids(19.16%)in amino acids,the higher proportion of 6 kinds of saturated fatty acids,4 kinds of monounsaturated fatty acids and 3 kinds of polyunsaturated fatty acids in fatty acids,and the lowest proportion of hexanal(11.83%)and 1-octene-3-ol(5.80%)in flavor substances.From the point of view of texture index,the meat quality of Taihu Lake population was more chewy.Conclusion The Taihu population of Siniperca chuatsi has certain advantages in terms of amino acids,fatty acids and flavour substance composition.The results of the present study will provide a data for the sustainable development of Siniperca chuatsi aquaculture.