摘要
以玉米胚芽油为原料,丙三醇为溶剂,在微波场作用下对亚油酸异构化为共轭亚油酸工艺进行了研究。通过紫外、红外吸收光谱分析,证明微波作用下生成的产物主要是共轭亚油酸,并含有顺式和反式共轭结构。与油浴加热方法比较微波作用异构化生产共轭亚油酸的方法优越可行。通过对影响共轭异构化反应的因素及正交试验的分析,确定了最佳工艺条件,获得了95%以上的共轭异构化转化率。
The conjugated linoleic acid （CLA） preparation from linoleic acid of corn germ oil was investigated in glycerin solvent system under microwave irradiation. The molecular structures of end products were determined by UV and FT-IR specmun. The results showed that they contained cis- and trans- double bonds. Compared with conventional heating with oil bath, microwave irradiation was an effective way to prepare CLA. Through the analysis of impact factors and results of orthogonal test, the optimal preparation conditions of CLA were gotten, CLA yield above 95%.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2006年第11期349-353,共5页
Food Science
关键词
微波
共轭亚油酸
异构化
工艺条件
microwave irradiation
conjugated linoleic acid
isomerization, preparation condition
