3种不同产地桑葚籽油的脂肪酸成分分析

Analysis of Fatty Acid Compositions of Mulberry Seed Oil in Three Different Regions

采用超声波辅助提取法从云南、北京和河北3种不同产地的桑葚籽中提取籽油,出油率分别为:29.46%、35.66%、26.82%,用化学分析方法测定了各籽油的理化指标。用气相-质谱联用法对3种桑葚籽油的脂肪酸成分进行了分析,面积归一化法计算相对含量。3种桑葚籽油中共检出15种脂肪酸,其中饱和脂肪酸约占20%,不饱和脂肪酸约占80%。不饱和脂肪酸主要为油酸、亚油酸、亚麻酸等。3种桑葚籽油中亚油酸含量最高,分别为:65.14%、69.55%和69.41%。

Seed oils in mulberries from three different regions including Yunnan, Beijing and Hebei were extracted by ultrasonic assisted extraction, and the oil yields were 29.46 %, 35.66 % and 26.82 % respectively. The physical and chemical properties of seed oils were determined by chemical analysis. The fatty acid compositions of three mulberry seed oils were analyzed by gas chromatography-mass spectrometry （GC/MS）, and the relative content of each fatty acid was calculated by area normalization method. Three kinds of mulberry seed oil contained 15 kinds of fatty acids. The saturated fatty acids accounted for about 20 %, while unsaturated fatty acids accounted for about 80 %. Unsaturated fatty acids were oleic acid, linoleic acid and linolenic acid mainly. The contents of linoleic acid were the highest among the fatty acids in seed oils from three different region mulberries, which were 65.14 %, 69.55 % and 69.41%, respectively.