摘要
为优化尿素包合纯化山核桃油中亚油酸的工艺,采用单因素和正交试验,研究了尿素包合反应中温度、时间、脂肪酸/尿素、甲醇/尿素等因素对亚油酸纯度及得率的影响。结果表明:在m(脂肪酸)/m(尿素)为0.3,V(甲醇)/m(尿素)为2.5,包合温度为-5℃,包合时间为24 h的优化条件下,山核桃油中亚油酸的含量由23.80%提高到80.73%。
Both single factor and orthogonal experiments were used to optimize conditions for purification of linoleic acid from Carya cathayensis Sarg. oil by urea adduction fractionation. Effects of adduction temperature, time, the ra- tio of fatty acid and urea and the ratio of methanol and urea on the purity and yield of linoleic acid were investigated. The results showed that the optimal purification conditions were the ratio of fatty acid and urea （m/m） at 0. 3, the ratio of methanol and urea （V/m） at 2. 5, adduction temperature at - 5℃, and adduction time of 24 h, in which content of linoleic acid in Carya cathayensis Sarg. oil increased from 23.80% to 80. 73%.
出处
《浙江农业学报》
CSCD
北大核心
2013年第2期347-353,共7页
Acta Agriculturae Zhejiangensis
基金
浙江省自然科学基金项目(Y2101447)
浙江省公益技术研究农业项目(2010C32055
2012C22020)
关键词
山核桃油
尿素包合
亚油酸
Carya cathayensis Sarg. oil
urea adduction fractionation
linoleic acid
