尿素包合物固相中回收脂肪酸的工艺研究

采用浸出法、直接酸解法、浸出后酸解法回收茶油和亚麻油尿素包合物固相中的脂肪酸，并将三种回收方法进行了比较。在实验中根据酸的浓度、温度对得率、酸价和碘价的影响进行了分析。通过对包合前、包合后以及包合物固相中脂肪酸成分的色谱分析，得出在尿素包合物固相中，饱和与单不饱和脂肪酸的纯度有了很大提高。茶油中油酸的含量由原来的66．99％上升至70．96％，亚麻油中油酸的含量由原来的15．35％上升至31．75％。实验得出经尿素包合后的脂肪酸，不易氧化。

Study on the Process of Recycling the Fatty Acid from the Solid Phase of Urea Clathrate

The methods of extraction, direct acidolysis and to recycle fatty acid following extracting from the solid phase of tea oil urea dathrate and flax oil urea clathrate were studied. The three recycling methods were compared. According to the difference of the acid concentraction and the temperatures, the experiment results of the recycling rote acid value and iodine value were analysed. With the chromatographic method, through the analysis of the fatty acid ingredient before urea clathrate. After urea clathrate and in the solid phase of urea clathrate, the purity of saturated fatty acid and un-satumte fatty acid in the solid phase urea clathrate increased greatly. The oleic acid content in the tea oil increased from 66.99% to 70.96%. While the oleic acid content in the flax oil increased from 15.35% to 31.75%. The experiments showed that the fatty acid after urea clathrate was not easy to develop oxidation.