摘要
本文以葵花籽油为原料,以制备多不饱和共轭亚油酸及尿素包合法纯化亚油酸的工艺进行了研究,重点考察了皂化温度、稀硫酸的浓度、离心转速、离心时间、95%乙醇与尿素配比(v/w)、尿素与脂肪酸配比(w/w)以及尿素包合时间对富集效率的影响。结果表明:最佳分离纯化工艺条件为皂化温度80℃、稀硫酸浓度20%、离心转速3 000r/min、离心时间10min、95%乙醇尿素比为3∶1、尿素脂肪酸比为1.5∶1和尿素包合时间12h。
Linoleic acid is abundant in sunflower oil, which is one of raw materials for preparation of conjugated linoleic acid. Preparation of polyunsaturated fatty acid and linoleic acid by urea adduction and purification process were studied , effects of saponification temperature, sulfuric acid concentration, centrifugal speed and time, ratio of 95%ethanol and urea (v/w), ratio of urea and fatty acids ( w/w) and inclusion time of urea on enrichment efficiency were examined. Results showed that optimum purification conditions were saponification temperature 80℃, sulfuric acid concentration 20%, rotation speed 3 000r/min, centrifugation time 10 min, ratio of 95% ethanol and urea 3:1, ratio of urea and fatty acids 1.5:1, and urea inclusion time 12 h.
出处
《粮油加工（电子版）》
2015年第12期31-34,共4页
Machinery for Cereals Oil and Food Processing Main Contents
基金
甘肃省自然科学研究基金计划(0803RJZA044)
关键词
葵花籽油
尿素包合法
亚油酸
sunflower seed oil
urea adduction
linoleic acid
