正交试验优选排石颗粒的提取工艺

目的:优选排石颗粒的提取工艺。方法:以总黄酮含量为指标,以煎煮时间、煎煮次数、加水量、醇提用量为考察因素,应用L9(34)正交试验筛选排石颗粒的最佳提取工艺条件。结果:最佳提取工艺条件为加12倍药材量水,煎煮120min,煎煮3次,干燥、粉碎,再用40倍药材量60%乙醇回流提取3次,每次30min,趁热过滤,回收乙醇。所得浸膏得率和总黄酮含量均较高,且重现性好。结论:优选得到的提取工艺稳定、可行。

Optimizing Extraction Technics for Paishi Granule by Orthogonal Test

OBJECTIVE:To optimize the extraction process of paishi granule.METHODS:The extraction process of paishi granule was optimized by L 9 (3 4 )orthogonal test with total flavonoids as index,and with duration of decoction,times of deˉcoction,the amount of water added and the amount of alcohol used for extraction as factors of investigation.RESULTS:The optimum extraction condition was the following,the amount of water added to which was12times that of the medical material,and it was decocted120min for3times,which then was dried and crushed,then60%alcohol,which was40times that of the amount of medicinal material,was extracted by refluxing for3times with30min each time,filtered while hot,and the alcohol was recovered.The yield of extractum and the content of the total flavonoids were fairly high,and there was a good reproˉducibility.CONCLUSION:The optimized process is stable and feasible.