关键词: 山桐子, 果实含油率, 脂肪酸含量

Abstract:

Oil rate and fatty acids content were analyzed in Idesia palycarpa Maxim fruits, sampled from nine different geographical populations in the main I.palycarpa distribution areas in China and one cultivated in the process of fruitsripening, were analyzed in this paper.Oil rate of fruits were measured with a national standard method and fatty acids content of fruits was quantitatively determined by using a precolumn derivatization gas chromatograph (GC) with the reference substarces.The results showed that fruits of Ningqiang population from Shaanxi Province had the highest oil rate (44.08±0.5 %) and was the most potential utilization value population.The best harvesting time for cultivated I.palycarpa fruits was November 15 every year and by then oil rate of fruit was the highest.There were six main fatty acids in I.palycarpa fruit oil, including to palmitic acid, methyl palmitelaidate, octadecanoic acid, oleic acid, linolenic acid, and linoleic acid, among which Linolenic acid was the dominant component.

Key words: Idesia palycarpa:oil rate of fruits, content of fatty acids