斜叶梾木种子油的理化性质及脂肪酸成分分析

摘要

The experiment was conducted to determine the physicochemical properties of Cornus obliqua seed oil and analyzed its fatty acid composition by GC-MS.The oil yield of C.oblique seed oil is about 7.4%.The physicochemical properties of the oil are 1.48%of refraction index (n20D ), 0.98 of relative density (d204 ), 31.90 mg/g KOH of acid value and 201.02 mg/g KOH of saponification value.Five kinds of unsaturated fatty acids are in seed oil, and the relative content is over 95.91%.Two kinds of saturated fatty acids are in seed oil, and the relative content is 3.34%.The highest relative con-tent of linoleic acid is about 68.29%followed by 25.25%of oleinic acid.%对斜叶梾木种子油的主要理化特性进行了测定，并利用气相色谱质谱联用技术（ GC-MS）对种子油的脂肪酸组成进行了分析。结果表明：斜叶梾木种子出油率为7．4％，折光指数为1．48％，相对密度（ d204）0．98，酸值（以KOH计）31．90 mg/g，皂化值（以KOH计）201．02 mg/g。脂肪酸组成分析表明，种子油中含7种脂肪酸，其中不饱和脂肪酸5种，质量分数为95．91％；饱和脂肪酸2种，质量分数为3．34％。在所有脂肪酸中亚油酸质量分数最高，为68．29％；其次是油酸，为25．25％。