一种核桃乳营养成分的测定分析

本文以一种核桃乳为研究对象,测定了其基本营养成分组成及含量,包括脂肪酸、矿物质元素、氨基酸等,并与母乳中相应的营养成分做了比较分析。结果表明,核桃乳中亚油酸、亚麻酸、磷、钠、镁、铁、锌、锰、碘、天冬氨酸、丝氨酸、谷氨酸、丙氨酸、胱氨酸、缬氨酸、异亮氨酸、酪氨酸、苯丙氨酸、组氨酸、精氨酸、亮氨酸等营养成分的含量均接近或高于母乳,特别是在脂肪酸组成方面,核桃乳的ω-6系脂肪酸（亚油酸）与ω-3系脂肪酸（亚麻酸）的含量不仅比母乳高,两者比例也更接近营养学家推荐的范围。分析同时发现,核桃乳中部分氨基酸（比如脯氨酸和蛋氨酸）和矿物质元素（钾、硒、铜）的含量低于母乳。本研究证明核桃乳是一种营养丰富的健康饮品,同时也为以核桃乳为基础通过营养物质补充添加开发具有更高营养价值的产品奠定了基础。 

Analysis of nutritional components in walnut milk

The nutrient components including basic elements,fatty acids,mineral elements and amino acids of a kind of walnut milk were measured and analyzed by comparing with those of human milk.The results showed that the contents of fatty acids,most of the amino acids and mineral elements in the walnut milk were close to or higher than those in human milk.Especially both of the ω-6 and ω-3 PUFAs were much higher than those in human milk.Meanwhile some nutritive substances such as a few amino acids( Pro,Met) and minerals( K,Se,Cu) were deficient compared with human milk. These results indicated that walnut milk was a kind of healthy drink with abundant nutrient elements,and also suggested a possible way to improve the nutritive value of walnut milk by complementary addition of some nutrients.