油茶优良无性系的理化性质及脂肪酸的分析

The physical and chemical properties of the seed oil and its fatty acid compositions of Camellia oleifera superior clones species

以38个油茶优良无性系为试材,采用索氏法提取油茶种子中的油脂,运用常规方法和气相色谱法分析测定其油脂的理化性质及脂肪酸的组成。结果表明：不同无性系间其油脂理化性质及脂肪酸含量有差异性,并存在相关性。其中,折光系数均接近为1.469 6;酸值介于0.36-0.92 mg.g-1;碘值范围在76-127.5 g.100g-1;皂化值介于168-218.5 mg.g-1;不饱和酸含量为总成分的90%左右,且以油酸为主,一般为80%左右;油酸和亚油酸的负相关系数最大,为-0.733 0。

Taking the 38 Camellia oleifera superior clones as the materials,the seed oil was extracted by Soxhlet extraction,Using conventional methods and gas chromatography,the physical and chemical properties and fatty acid composition were measured.The results show that between different clones of lipid and fatty acid content of physical and chemical properties,there was differences and correlation.Among them,the refraction coefficient were close to 1.469 6;acid ranged from 0.36 to 0.92 mg·g-1;iodine value in the range of 76 ~ 127.5 g·100 g-1;saponification value ranging from 168 to 218.5 mg·g-1;unsaturated acid content of about 90% of the total composition,and oleic acid as Lord,was generally about 80%;oleic acid and linoleic acid negative correlation coefficient of the largest was-0.733 0.