大孔

Results indicate that the optimum extraction conditions are as follows: ultrasonic power is 600W, temperature is 53℃, the ratio of liquid to solid is 8︰1, ultrasonic treating time is 70min, reflux extraction time is 120min, the extraction rate of oleanolic acid is 3.000 mg/g; XDA-1 resin is favorable in purification of OA in Chaenomeles sinensis Koehne, the optimum purification conditions are found to be 0.794 mg/mL of OA concentration, the flow rate of adsorption is 0.5 mL/min; the desorption solvent is 90% ethanol, and the flow rate of elutant is 1.0 mL/min.

结果表明，超声波辅助提取最佳工艺条件为：超声功率600 W、提取温度53℃、液料比8：1、超声波提取70 min，回流提取120 min，齐墩果酸得率为3.000 mg/g；XDA-1型大孔树脂对齐墩果酸具有较好的吸附和解吸效果，最佳纯化工艺条件为上柱液浓度0.794 mg/mL，吸附流速0.5 mL/min；以90%浓度乙醇洗脱，洗脱流速1.0 mL/min，纯化后得提取物中齐墩果酸纯度可达26.55%。

The research aimed to study a new method of microwave joint macroreticular resin extracting flavonoids from Chimonanthus praecox L.

［目的］对微波联合大孔树脂提取腊梅花总黄酮的新工艺进行研究。

Adding methylbenzene into the reaction system as cosolvent ,this can lower the uste amount of DMF and the cost of production .when we chlorinate the Vilsimer reagent and phosphorus oxychloride to sucroste-6-ethal ester is one to ten ,the result of chloridization is the...

探索了氯化后不经三氯蔗糖单酯结晶提纯，直接制备三氯蔗糖的新方法，通过大孔树脂柱，得到了纯度大于95%的产品，终产率高于37%。

ResultsThe AB-8 resin was founded to be suitable for separation and purification of chromone glycoside.

大孔树脂吸附分离技术可有效富集中药活性部位，是提高中药制剂水平的一种有效方法［2～4］。

ConclusionThe AB-8 resin is suitable for separation and enrichment of chromone glycoside in extract of Yupingfeng.

结论AB8大孔吸附可用于玉屏风提取物中色原酮苷活性成分的分离纯化。

Www.shuzhi.com.cn/bbs The experiment results showed that the content of chromone glycoside in the extract of Yupingfeng increased from 0.55% to 10.01% with a recovery rate of 87.2% by separation on fixed bed of AB-8 resin.

本实验探讨了玉屏风提取物中升麻苷和5-O-甲基维斯阿米醇苷两种色原酮苷的大孔树脂吸附分离，旨在为玉屏风制剂的生产和改进提供一定参考。

ObjectiveTo separate and purify the chromone glycoside from the extract of Yupingfeng with macroporous resin absorption.

目的大孔树脂吸附分离纯化玉屏风复方提取物中色原酮苷成分。

MethodsThe resin suitable for separation of chromone glycoside was determined by static absorption experiment on seven different kinds of resins, and further more, the absorption and elution of chromone glycoside on the selected resin were studied by fixed bed absorption experiment. ResultsThe AB-8 resin was founded to be suitable for separation and purification of chromone glycoside.

方法采用静态吸附实验考察D101，AB8，S8，X5等7种大孔吸附树脂对升麻苷和5O甲基维斯阿米醇苷两种色原酮苷的吸附效果，筛选出吸附性能较好的树脂；对所筛选出的树脂，进一步采用固定床吸附法分离玉屏风提取物中色原酮苷，探讨主要参数对色原酮苷固定床穿透曲线及洗脱曲线的影响。

AIM: To study the technological parameters of the purification process of total flavonoids of Crataegus leaves with HPD-600 macroreticular resin.

目的：研究HPD-600大孔树脂纯化山楂叶总黄酮的工艺条件及参数。

Keywords HPD-600macroreticular resin;total flavonoids of Crataegus leaves;separation and purification

HPD-600大孔树脂；山楂叶总黄酮；分离纯化；正交实验

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。