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目的:优化荜澄茄挥发油提取方法。方法:采用超临界CO_2萃取法提取荜澄茄挥发油,以星点设计-响应面法(CCDRSM)探讨最佳萃取工艺参数,所得挥发油经GC-MS分析,比较超临界CO_2萃取法和水蒸气蒸馏法提取的荜澄茄挥发油成分的种类和含量。结果:超临界CO_2萃取法最佳提取工艺为温度44℃,压力26 MPa,乙醇夹带剂11 ml,时间40 min,提取的荜澄茄挥发油中有效成分总量为66.26%。检测出挥发油中主要成分为橙花醛、香叶醛和柠檬烯,超临界CO_2萃取法提取的挥发性物质种类较水蒸气蒸馏法少,提取的挥发油中柠檬醛含量较水蒸气蒸馏法高。结论:经星点设计-响应面法优化的荜澄茄挥发油提取工艺,为荜澄茄挥发油的质量控制提供了借鉴。
Objective: To optimize the extraction method of volatile oil from 荜 Cheng Nao. Methods: The essential oil of Radix Esculentus was extracted by supercritical CO_2 extraction. The optimal extraction parameters were determined by CCDRSM. The obtained essential oil was analyzed by GC-MS. The effects of supercritical CO_2 extraction and steam distillation Law extracted from the species and content of 荜? Results: The optimal extraction conditions for supercritical CO_2 extraction were temperature 44 ℃, pressure 26 MPa, ethanol entrainer 11 ml and time 40 min. The total amount of active constituents extracted from the volatile oil was 66.26%. The main constituents of the volatile oil were neral, geranial and limonene. The volatile compounds extracted by supercritical CO_2 were less volatile than those by steam distillation. The content of citral in the extracted volatile oil was higher than that by steam distillation. CONCLUSION: The extraction technology of Volatile Oil from Rhizoma Chongpensei which is optimized by the star design-Response surface methodology provides a reference for the quality control of Volatile Oil from Chimonobambusa.