新疆野生沙枣仁中脂肪和蛋白质组分的研究

目的]研究新疆野生沙枣仁中脂肪和蛋白质组分。方法]采用气质联用法测定新疆野生沙枣仁油脂中脂肪酸的含量及组分；采用分级提取法分离沙枣仁中的蛋白质，并用半微量定氮法对蛋白质中的氨基酸组分进行分析。结果]新疆野生沙枣仁的含油率为8．2％．以不饱和脂肪酸为主要成分，其中以亚油酸含量最高，为46．52％，其次为油酸，亚麻酸和硬脂酸。沙枣仁中粗蛋白平均含量为11．31％。其中以球蛋白和清蛋白为主，占蛋白质总量的70％以上，而残渣蛋白、醇溶蛋白、谷蛋白含量比较低。沙枣仁蛋白质中含有18种氨基酸，其中天冬氨酸含量最高，为12．7％，其次为谷氨酸，占11．8％，酪氨酸为9．33％，亮氨酸为8．11％，赖氨酸为7．22％，精氨酸、丝氨酸、丙氨酸、缬氨酸含量次之，组氮酸、蛋氨酸和胱氨酸含量最少。其中人体必需氨基酸含量达28．76％。结论]新疆野生沙枣仁营养丰富，具有广阔的应用前景。

Research on Fat and Protein Components of Wild Elaeagnus angustifolia Seeds in Xinjiang

Objective] To investigate fat and protein components of wild Elaeagnus angustifolia seeds in Xinjiang.Method]The contents and components of fatty acids in the seeds of Elaeagnus angustifolia were deter mined by GC-MS,and the protein components in which was isolated by fractional extraction method then deter mined by semi micro-quantitative nitrogen method.Result]Fat content of Elaeagnus angustifolia seeds was 8.20%,and the major components of which were linoleic acid(46.52%),oleic acid(33.17%),linolenic ...