玉米皮油提取及其理化指标分析

Extraction of corn bran oil and analysis of its physico-chemical properties

为了开发利用玉米皮资源,对玉米皮的营养成分以及玉米皮油的理化指标和脂肪酸组成及甘三酯组成进行了分析测定。结果表明,玉米皮粗脂肪含量为5.99%,粗蛋白质4.86%,粗纤维含量为12.45%;玉米皮油的相对密度0.9135,皂化值189.1mgKOH/g,碘值112.4gI/100g,不皂化物3.75%;玉米皮油脂肪酸组成中,油酸30·27%,亚油酸54·14%,棕榈酸13·68%,硬脂酸1·14%。玉米皮油富含不饱和脂肪酸,含量达80%以上。

In order to promote the development of corn bran source, the nutritional components of corn bran, physico-chemical properties and fatty acid compositions of corn bran oil were analyzed. The results show that the crude fat in corn bran is 5.99% , the protein is 4.86% , the crude fiber is 12.45%. The physico-chemical indexes of corn bran oil are as following： d4℃^20℃ 9135 0. 9135, IV 112.4 gI/100 g, SV 189.1 mgKOH/g, unsaponifiable matters 3.75%. The fatty acid composition of corn bran oil is： oleic acid 30.27%, linoleic acid 54. 14%, palmic acid 13.68% ,stearie acid 1.14%. The content of unsaturated fatty acid in corn bran oil is 84.41%.