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目的:研究超临界CO2萃取金桔中柠檬烯的最佳工艺条件。方法:采用正交试验设计筛选金桔中柠檬烯的提取工艺,并用GC法对挥发油中的柠檬烯进行含量测定。结果:最佳萃取工艺条件为:萃取温度30℃,萃取压力200 bar,萃取时间4 h,萃取率为16.46 mg/g。结论:采用超临界CO2萃取金桔中柠檬烯,操作简便,收率高。
Objective: To study the optimum conditions of limonene extraction from kumquat by supercritical CO2. Methods: The orthogonal experiment was used to screen the limonene in kumquat, and the content of limonene in volatile oil was determined by GC. Results: The optimum extraction conditions were: extraction temperature 30 ℃, extraction pressure 200 bar, extraction time 4 h, extraction rate 16.46 mg / g. Conclusion: The supercritical CO2 extraction of limonene in kumquat is easy to operate with high yield.