谷子油的理化性质及脂肪酸组成分析  

Physicochemical properties and fatty acid composition of millet oil

作　　者：李红[1,2] 司俊玲[1,2] 杜文娟[3] 张喜文[3] 李慧君[1,2] 姚镜滢 申瑞玲[1,2] 

机构地区：[1]郑州轻工业学院食品与生物工程学院,郑州450002 [2]郑州轻工业学院食品生产与安全协同创新中心,郑州450002 [3]山西省农业科学院谷子研究所,山西长治046011

出　　处：《中国油脂》2015年第9期86-88,共3页China Oils and Fats

基　　金：2013年度国家自然科学基金项目(31271854);2011年度河南省高等学校青年骨干教师资助计划项目;2013年度郑州轻工业学院大学生创新训练项目(201310462086);国家现代农业产业技术体系建设专项资金资助项目(nycytx-13)

摘　　要：对谷子的基本组成和谷子油的理化性质及脂肪酸组成进行了分析。结果表明,谷子中粗蛋白质、粗脂肪、总糖和淀粉含量分别为13.9%、5.6%、66.5%和63.7%。谷子油的酸值(KOH)为11.9 mg/g,碘值(I)为132.9 g/100 g,过氧化值为30.9 mmol/kg,皂化值(KOH)为194.4 mg/g,不皂化物含量为2.73%。谷子油主要由10种脂肪酸组成,其中饱和脂肪酸含量占16.81%,主要为棕榈酸(7.87%)、硬脂酸(6.17%)和花生酸(2.03%);不饱和脂肪酸含量达83.26%,其中以亚油酸含量(65.30%)最高,其次为油酸(14.20%)和亚麻酸(2.93%)。因此,谷子油是一种极具开发价值的营养保健油脂。The basic composition of millet, physicochemical properties and fatty acid composition of mil- let oil were analyzed. The results showed that the contents of crude protein, crude fat, total sugar and starch of the millet were 13.9% , 5.6% , 66.5% and 63.7% , respectively. The acid value, iodine val- ue, peroxide value, saponification value and unsaponifiable matter content of millet oil were 11. 9 mgKOH/g, 132.9 gI/100 g, 30.9 mmol/kg, 194.4 mgKOH/g and 2.73% respectively. Ten kinds of fatty acids were found in millet oil. The content of saturated fatty acids was 16.81% , including palmitic acid （7.87%）, stearic acid （6.17%） and arachidic acid （2.03%）, and the content of unsaturated fatty acids was 83.26% , in which the content of linoleic acid was the highest （ 65.30% ） , followed by oleic acid（ 14.20% ） and linolenie acid（2.93% ）. Therefore, millet oil was a nutritional and healthy oil with development value.

关 键 词：谷子 谷子油 理化性质 脂肪酸组成 基本组成 

分 类 号：TQ646[化学工程—精细化工]