Optimization of Extracting Technology for Essential Oil from Elsholizia densa Benth
[ Objective] The study aims to optimize the extracting technology conditions of essential oil from Elsholtzia densa Benth. [ Method] Volatile oil was extracted from Elsholtzia densa Benth using steam distillation , and the effects of four extracting factors (the size of the medicinal herb, ultrasonic time, soaking time and the ratio of the material to liquid) on the yield of essential oil extracted from Elsholtzia densa Benth was analyzed through the orthogonal test method. [ Result] The optimized extraction process of essential oil from Elsholtzia densa Benth was as follows: the size of the medicinal herb 50 mesh, ultrasonic time 12 min, being soaked in the water for 6 h , and the ratio of the material to liquid 1 : 16 g/ml. Under this conditions, the average extracting rate of the essential oil was 0. 407%. [ Conclusion ] The optimized extraction process of essential oil from Elsholtzia densa Benth was simple and practicable, and its extracting rate was higher.
国家科技期刊平台
NSTL
万方数据
维普
