Supercritical fluid extraction (SFE) of essential oil from dry rhizome ofLigusticum chuanxiong Hort was developed. GC/MS was used for the determination of the composition ofessential oil. Forty-four compounds were ide...Supercritical fluid extraction (SFE) of essential oil from dry rhizome ofLigusticum chuanxiong Hort was developed. GC/MS was used for the determination of the composition ofessential oil. Forty-four compounds were identified. The conventional extraction method wasconducted in parallel for comparison. The extracts were qualitatively compared by GC/MS. The yieldsof SFE and steam distillation-extraction were 4.16 % ( v/w) and 0.8 % ( v/w), respectively.Application of SFE of zessential oil from dry rhizome of Ligustiaan chuanxiong Hort was preferable.展开更多
目的:通过均匀设计试验确定超临界二氧化碳流体萃取(SFE-CO2)掌叶大黄中蒽醌类成分的最佳提取工艺条件。方法:以药材粒度、萃取压力、萃取温度、萃取时间和夹带剂用量为考察因素,进行SFE-CO2萃取;用高效液相色谱法测定不同条件下芦荟大...目的:通过均匀设计试验确定超临界二氧化碳流体萃取(SFE-CO2)掌叶大黄中蒽醌类成分的最佳提取工艺条件。方法:以药材粒度、萃取压力、萃取温度、萃取时间和夹带剂用量为考察因素,进行SFE-CO2萃取;用高效液相色谱法测定不同条件下芦荟大黄素、大黄酸、大黄素、大黄酚、大黄素甲醚的含量。结果:优选出总蒽醌的最佳萃取工艺条件是萃取压力为38 MPa,萃取温度为70℃,萃取时间为60 m in;夹带剂用量为300 m l。结论:最佳提取工艺可有效萃取掌叶大黄中蒽醌类成分;本含量测定方法可靠、简单易行。展开更多
文摘Supercritical fluid extraction (SFE) of essential oil from dry rhizome ofLigusticum chuanxiong Hort was developed. GC/MS was used for the determination of the composition ofessential oil. Forty-four compounds were identified. The conventional extraction method wasconducted in parallel for comparison. The extracts were qualitatively compared by GC/MS. The yieldsof SFE and steam distillation-extraction were 4.16 % ( v/w) and 0.8 % ( v/w), respectively.Application of SFE of zessential oil from dry rhizome of Ligustiaan chuanxiong Hort was preferable.
文摘目的:通过均匀设计试验确定超临界二氧化碳流体萃取(SFE-CO2)掌叶大黄中蒽醌类成分的最佳提取工艺条件。方法:以药材粒度、萃取压力、萃取温度、萃取时间和夹带剂用量为考察因素,进行SFE-CO2萃取;用高效液相色谱法测定不同条件下芦荟大黄素、大黄酸、大黄素、大黄酚、大黄素甲醚的含量。结果:优选出总蒽醌的最佳萃取工艺条件是萃取压力为38 MPa,萃取温度为70℃,萃取时间为60 m in;夹带剂用量为300 m l。结论:最佳提取工艺可有效萃取掌叶大黄中蒽醌类成分;本含量测定方法可靠、简单易行。
