紫苏油的脂肪酸组成、维生素E含量及理化性质研究

用气相色谱(GC)分析了紫苏油的脂肪酸组成,用高效液相色谱(HPLC)测定了紫苏油中维生素E含量,并对紫苏油的理化性质进行了研究。结果表明,紫苏油中不饱和脂肪酸含量为93.707%,其中亚麻酸含量最高,为60.752%,亚油酸和油酸含量分别为15.761%和17.194%;紫苏油中维生素E的总含量为500.9 m g/kg;紫苏油比重为0.928 8,折光指数为1.481 7,酸价为2.9 m g/g,碘价为1 980 g/kg,皂化值为190.7 m g/g,不皂化物为0.6%,水分及挥发物为0.07%,过氧化值为3.7 mm o l/kg。紫苏油是一种极具开发潜力的营养保健油。

Study on the composition of fatty acid,vitamin E content and physicochemical properties of perilla oil

The gas chromatography(GC) analysis shows that 93.707% fatty acid of perilla oil is unsaturated.The content of linolenic acid is 60.752%,which is the highest.The content of linoleic acid and oleic acid are 15.761% and 17.194% respectively.High performance liquid chromatography(HPLC) test shows that the total content of vitamin E in perilla oil is 500.9 mg/kg.Physicochemical properties test result shows that specific gravity is 0.928 8,refraction index 1.481 7,acid value 2.9 mg/g,iodine value 1 980(g/kg),saponification value 190.7 mg/g,unsaponifiable matter 0.6%,moisture and volatile matter 0.07%,peroxide value 3.7 mmol/kg.So it is evident that perilla oil is a nutritive health care oil with great exploitation potentialities.