干燥温度、产地和采摘时间对洋常春藤叶中2种皂苷的影响

摘要

目的 考察干燥温度、产地和采摘时间对洋常春藤Hedera helixL.叶中常春藤皂苷C、α-常春藤皂苷的影响.方法 分别在60℃、70℃、80℃、90℃、105℃温度下,对来自2个产地、不同采摘时间的3批洋常春藤叶进行鼓风干燥处理至恒重;采用HPLC法分析各洋常春藤炮制品中2种皂苷的含有量;将不同批次、不同温度下洋常春藤炮制品粉末按适宜比例混合,采用带约束的最小二乘最优化方法确定其比例.结果 3批洋常春藤叶中常春藤皂苷C的含有量均随温度升高而增高,而α-常春藤皂苷含有量随温度的升高而降低;混批洋常春藤炮制品中2种皂苷含有量的测定值与目标值误差小于5.5％.结论 3种因素对洋常春藤叶中2种皂苷含有量的影响顺序为干燥温度＞产地＞采摘时间.合理混合不同质量的洋常春藤炮制品可使2种皂苷的含有量稳定在特定范围内.%AIM To investigate the effects of drying temperature,growing area and plucking time on hederacoside C,α-hederin from leaves of Hedera helix L..METHODS Three batches of H.helix leaves plucked in different time from two growing areas were dried in a vacuum oven to the constant weight at 60 ℃,70 ℃,80 ℃,90 ℃ and 105 ℃,respectively.Two saponins in the processed leaves were determined by HPLC.The powders of the processed H.helix leaves of different batches were mixed with proper ratios,which were determined by least squares optimization method with constraints.RESULTS The content of hederacoside C in the processed H.helix leaves of the three batches increased while that of α-hederin decreased with increasing temperature.The relative error between measured value and desired contents of hederacoside C and α-hederin in the mixed H.helix leaves was less than 5.5％.CONCLUSION The effects of three factors on the content of two saponins in the H.helix leaves are in the order of drying temperature,growing area and plucking time.Mixing processed H.helix leaves of different quality statues reasonably can control the contents of two saponins in a certain range.