关键词: 紫枝玫瑰, 精油, 酶解辅助水蒸汽蒸馏法

Abstract: The process was optimized for extracting essential oil from Rosa rugosa by the enzymatic hydrolysis-hydro distillation in this investigation. In comparison with steam distillation method, extraction rate of essential oil and contents of main components in essential oil could be increased by the pectinase and cellulose extraction method. The effects of factors including enzymolysis temperature, concentration of enzymes and enzymolysis pH on the extraction yields of essential oil and contents of main components in essential oil were explored by single-factor and orthogonal test. The optimal extraction conditions were as follows: with enzyming pretreatment, enzymatic concentration was 3 000 U/g, enzymolysis temperature was 50℃, enzymolysis pH was 5.5, of which the extraction yield was 0.243 9%.

Key words: Rosa rugosa Zizhi, essential oil, enzymatic hydrolysis-hydro distillation