Comparative analysis of fatty acid and squalene content in peony seed oil from different regions and varieties
In order to provide reference information for the variety breeding of oil peony,nutrition evaluation and origin traceability of peony seed oil,gas chromatography-mass spectrometry was used to detect the fatty acid composition and squalene content of peony seed oil from Paeonia ostii'Feng Dan'and Paeonia rockii Hong & J.J.Li of four regions(Luoyang,Henan;Heze,Shandong;Bozhou,Anhui;Lanzhou,Gansu).The correlation between the fatty acid and squalene content of peony seed oil and environmental factors was analyzed.The results showed that 11 kinds fatty acids were found in peony seed oil,mainly a-linolenic acid,oleic acid and linoleic acid.The contents of fatty acids and squalene in 8 kinds of peony seed oil samples were different,and the relative contents of oleic acid in Paeonia ostii'Feng Dan'peony seed oil from the same origin was significantly lower than that in Paeonia rockii Hong& J.J.Li peony seed oil(p＜0.05),linoleic acid content(except Luoyang,Henan)was significantly higher than that in Paeonia rockii Hong & J.J.Li peony seed oil(p＜0.05).The linoleic acid content in Lanzhou was significantly lower than that in other areas(p＜0.05),which could be used as one of the indicators to identify Lanzhou peony seed oil.The content of squalene and the relative contents of oleic acid and α-linolenic acid in peony seed oil decreased with the increase of annual rainfall and average annual temperature,but increased with the increase of altitude,and the content of squalene in peony seed oil increased with the increase of the relative contents of oleic acid and α-linolenic acid,but decreased with the increase of the relative content of linoleic acid.In conclusion,the differences in the variety,origin and environmental factors will cause the differences in fatty acid and squalene content in peony seed oil.
NETL
NSTL
万方数据
维普
