谷糠组成特性及谷糠油组成分析(精品doc).doc

毕业论文题 目: 谷糠组成特性及谷糠油组成分析 摘 要 谷糠，即粟糠，是谷子脱壳后依附在糙米上的表面层，谷糠中含有一定量的油脂，即为谷糠油。本课题是以谷糠为原料，采用国家标准方法或近代仪器和经典分析相结合的方法测定谷糠及谷糠油的多种特性常数，包括谷糠的灰分、水分、粗脂肪、粗蛋白、低聚糖、粗纤维及不溶性膳食纤维的含量和谷糠油的灰分、水分、相对密度、黏度、色泽、折光率、皂化值及含磷量等。其中谷糠的粗脂肪含量为 9.39％、粗蛋白含量为 12.48％、不溶性膳食纤维含量为 50.43％，谷糠油的皂化值为 186.29 mgKOH/g 及含磷量为 1.74％。同时采用气相色谱法测定谷糠油中脂肪酸组成与含量，结果表明不饱和脂肪酸的含量高达 84.75％。并应用高效液相色谱测定油脂中维生素 E 含量，结果表明维生素 E 含量高达 63.10mg/100g 油。采用胰脂酶水解法测定谷糠油的 Sn-2 位脂肪酸组成与含量，得出甘三酯立体专一分布。通过此次的研究能够对谷糠和谷糠油有一定的了解，能够更好地将身边的可再生资源利用好，为以后的研究打好基础。关键词： 谷子 谷糠 谷糠油 特性 脂肪酸 甘三酯Title Study on components of millet shell and millet shell oilAbstractThe millet shell is the surface layer of millet which is taken off the hull and there is afew oil in the millet shell that is millet shell oil .Now at home and abroad the researchof millet shell and millet shell oil is very few. This topic takes millet shell as rawmaterialand adopts the national standard method or the methods of modern instrumentand classic analysis combine together to measure the characteristic constants of milletshell and millet shell oil which included the content of ash moisture fat protein oligosaccharides and fibre in the millet shell and the content of ash moisture phospholipid and the number of relative density viscosity color refractive index S.V . and so on . Simultaneity FA composition determined by Gas Chromatographywhich indicate that the unsaturated Fatty Acid content very high accounting for morethan 80 . Determination the content of VE in amond oil using HPLC and the resultsshowed a high content of vitamin E about 63.104 mg/100g oil. While using the samemethod analysis Sn-2 Fats fatty acid ester composition by calculating deducedtriglycerides three ester fractions。Through analysis millet shell and millet shell oil areto have a very good development foreground .Keywords millet millet shell millet shell oil characteristic fatty acids triglycerides 目 次1 引言 （或绪论） …………………………………………………………………………………… 11.1 课题背景………………………………………………………………………………………… 11.2 国内外研究背景与发展趋势…………………………………………………