摘要
Abstract
In order to solve the residues and aroma constituents serious in traditional solvent extraction process,by using tribute chrysanthemum as raw material,DME subcritical fluid was used to extract tribute chrysanthemum essential oil.By studying the extraction pressure,temperature,time and materials ratio,the optimum conditions of the DME subcritical fluid extraction technology to extract tribute with single factor ex-periment and orthogonal experiment was determined .The results showed that effects of factors on the yield of tribute chrysanthemum absolutes were as follows:pressure > material ratio >temperature > time,within the scope of the test.The best process parameters:extraction pressure was 0.5 MPa,temperature was 20℃, time was 3 h,liquid -to -solid ratio was 7∶1,and the average yield of tribute chrysanthemum absolutes was 4.19% in this condition.The sensory evaluation showed that the essence obviously enhanced tobacco’s a-bundant aroma,and imparted a unique stylish character to tobacco.The optimized parameters increased the yield of essence,and the extraction process was feasible and stable.关键词
贡菊/亚临界流体二甲醚/萃取/净油Key words
subcritical fluid/DME/extraction/tribute chrysanthemum分类
化学化工
