Study on the quality and antioxidant activity of high oleic acid peanut treated by microwave
In order to investigate the effect of microwave pretreatment on the quality and an-tioxid-ant activity of high oleic acid peanut oil,with LuHua 19 as raw material,high oleic acid peanut oil was obtained by optimizing microwave extraction process.The oil yield of high oleic acid pea-nut and the acid value(AV),color,valueperoxide value(POV),oxidation stability in-dex(OSI),fa-tty acid composition,and alpha-VE content of high oleic acid peanut oil were an-alyzed.The results showed that microwave pretreatment could beneficial to improve the oil yield of high oleic acid peanut oil.When the microwave time was 6-7 min,the acid value and antioxi-dant capacity of hi-gh oleic acid peanut oil were the highest and the peroxide value was the low-est.Microwave time had no significant effect on its fatty acid composition and VE content,but it could significantly increase the contents of three sterols:campesterol,stigmasterol and beta-sitosterol.