D101型大孔吸附树脂分离纯化沙苑子总黄酮工艺研究

目的优选大孔吸附树脂分离纯化沙苑子总黄酮(ACSTF)的工艺。方法以ACSTF出膏率、总黄酮质量分数、工艺转移率为指标,采用正交设计法优选水煎煮提取沙苑子的工艺参数、D101型大孔树脂分离纯化ACSTF的工艺参数。结果最优提取工艺为加水煎煮提取3次,每次0.5 h,加水量分别为10、6、6倍药材量。D101树脂分离纯化ACSTF的优化工艺条件为上样液ACSTF质量浓度为约1.0 mg/m L,径高比为1∶5,上样体积流量1 BV/h,比上样量为0.6 g/m L(药材/湿树脂);水洗脱体积流量1 BV/h,水洗脱体积为4 BV;乙醇洗脱体积分数为70%,乙醇洗脱体积流量为1 BV/h,乙醇洗脱体积为5 BV。制成的沙苑子总黄酮提取物出膏率为2.65%,总黄酮质量分数为56.24%,工艺转移率为68.37%。结论该方法简单、可行,能够用来分离纯化ACSTF。

Purification of total flavonoids extracted from Astragali Complanati Semen using D-101 macroporous adsorption resin

Objective To optimize the purification technology of total flavonoids from Astragali Companati Semen (ACS) by macroporous adsorption resin. Methods The process parameters of water decoction extraction of ACS and purification of total flavonoids extracted from ACS by D-101 macroporous adsorption resin were optimized by orthogonal experiment design method. Results The optimal extraction process were as follows:water decoction extract for three times, each time 0.5 h, water addition of 10, 6, and 6 times amount of the medicine respectively. The optimized technology conditions of D-101 macroporous adsorption resin were as follows:The flavonoids concentration of sample liquid of ACS was about 1.0 mg/mL, the diameter ratio was 1:5, the sample flow rate was 1 BV/h, the rate of sample weight was 0.6 g/mL (herbs/resin); The velocity of water elution was 1 BV/h and its elution volume was 4 BV; The elution concentration, elution velocity, and elution volume were 70%, 1 BV/h, and 5 BV, respectively. The content paste rate of made ACS of total flavonoids was 2.65%, the mass fraction of total flavonoids was 56.24%, and the process transfer rate was 68.37%. Conclusion The method is simple and feasible for purification of total flavonoids extracted from ACS.