| The test utilizes cuminum cyminum as raw material for the extraction of its essential oil. Through the comparison of four kinds of extraction technologies——organic solvent of high and low boiling point extraction technology, steam distillation under normal pressure and under low pressure, and on the basis of single factor and multi-factors orthogonal test, conclusion from my work indicates that to extract essential oil from cuminum cyminum with organic solvent of low boiling point is feasible for production .The test still conducts the exploration and study of the micro—encapsulation technology of cuminum cyminum essential oil by the orthogonal test and choose several kinds of wall materials—CMC,arabic gum,gelatin and dextrin of malt. Through the analysis of single-factor and multi-factors orthogonal test, emulsifiers and their proper usage dose are decided.The conclusion indicates that the optimal test conditions when gelatin is taken for wall material is as following: emulsification temperature 30℃, ratio of essential oil to wall material 1:1, emulsifier in total emulsification liquid volume0.4% , churning speed 1000r/min for 15min .By the same way, to arabic gum for wall material , the optimal test conditions are as following: emulsification temperature 40℃, ratio of essential oil to wall material 1: 1, emulsifier in total emulsification liquid volume 0.4% , churning speed 1000r/min for 15min. When the ratio of CMC to dextrin of malt 9:1 for wall material , the optimal test conditions are as following:emulsification temperature 40℃, ratio of essential oil to wall material 1.2:1, emulsifier in total emulsification liquid volume 0.4%, HLB8, churning speed 1000r/min for 15min.At last, lots of examination and analysis work indicate that the embedding rate of cuminum cyminum essential oil is very high , and can mostly stay its volatile fragrant component.
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