浙东白鹅与朗德鹅肌肉营养成分比较与评价

Analysis and comporison of nutritional component in the muscle of Zhedong geese and Landes geese

为探究浙东白鹅和朗德鹅营养差异,对浙东白鹅和朗德鹅的营养成分和价值进行了分析与评价。结果表明:浙东白鹅粗脂肪含量高于朗德鹅,而二者的粗蛋白和粗灰分含量无显著差异;浙东白鹅和朗德鹅氨基酸种类丰富,其必需氨基酸指数为79.46~88.28,符合FAO/WHO规定的优质蛋白质标准;其限制性氨基酸为蛋氨酸和半胱氨酸;浙东白鹅游离鲜味氨基酸含量高于朗德鹅;浙东白鹅和朗德鹅均含有丰富的油酸,其中浙东白鹅的单不饱和脂肪酸相对含量高于朗德鹅,而其多不饱和脂肪酸(PUFA)相对含量低于朗德鹅,但二者的PUFA/饱和脂肪酸均高于英国卫生部规定标准;浙东白鹅的鹅肌肽含量高于朗德鹅,而肌肽含量低于朗德鹅。综上,浙东白鹅和朗德鹅均具有较高的营养价值。

To study the difference of nutritional value of Zhedong geese and Landes geese,the contents of nutritional component in chest and leg muscle of Zhedong geese and Landes geese were determined.The results showed that crude fat content of Zhedong geese was higher than that of Landes geese.However,crude protein and crude ash contents were almost same in Zhedong geese and Landes geese.Both Zhedong geese andLandes geese had a wide variety of amino acids,and their essential amino acids(EAA)compositions and structures fit in FAO/WHO recommended pattern for amino acids.The first limited amino acid in Zhedong geese and Landes geese was methionine+cysteine,and the essential amino acids index(EAAI)ranged 79.46~88.28.However,the content of free delicious amino acids in Zhedong geese was higher than that in Landes geese.The two kinds of geese were rich in oleic acid.Compared with Landes geese,Zhedong geese had a higher level of monounsaturated fatty acids(MUFA)and lower level of polyunsaturated fatty acids(PUFA).The ratio of PUFA/saturated fatty acids in Zhedong geese and Landes geese met with the UK Department Health standard.The content of carnosine in Landes geese was higher than that in Zhedong geese,however,the content of anserine in Zhedong geese was higher than that in Landes geese.These results indicated that the nutritional value of Zhedong geese and Langes geese was very high.