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1·Objective: To establish the preparation method of levodopa analog (abbreviate: LDA) reference substance by AKTA Explorer 100 Preparative Chromatography System;

目的：建立制备色谱层析系统制备左旋多巴类似物（简称：LDA）对照品的方法；

2·This article introduces three kinds of preparative chromatography used in purifying bio molecules and active ingredient pharmaceutical compounds for drug discovery and manufacture.

本文介绍三类制备型层析系统，分别用在新药开发和制造领域中纯化生物性分子和药物有效成分。

3·Preparative high performance liquid chromatography (PHPLC) technique was used to separate and purify high purity of chlorogenic acid from Eucommia ulmoides Oliv.

采用制备高效液相色谱技术，从杜仲叶提取物中分离纯化得到高纯活性成分绿原酸。

4·Preparative scale chromatography is used to separate diesel oil into four hydrocarbons.

应用薄层制备色谱，从柴油中分离出上述四种较纯的烃类。

5·Preparative high-speed counter-current chromatography (HSCCC) was used for the separation of calycosin and formononetin from the ethyl acetate extract of Astragalus membranaceus Bge.

采用高速逆流色谱法（HSCCC），以正己烷氯仿甲醇水组成二相系统作为固定相与流动相，对黄芪的乙酸乙酯粗提物进行了分离纯化。

6·Preparative high-speed counter-current chromatography(HSCCC) was used for the isolation and purification of solanesol from potato leaves.

采用超微回流提取方法提取土豆叶中的茄尼醇，用高速逆流色谱（HSCCC）对粗提物中的茄尼醇进行分离纯化。

7·A preparative and separation method using low pressure liquid chromatography to isolate crocins has been developed.

采用低压液相色谱法制备西红花有效成分西红花甙。

8·A method for the purification of solanesol by preparative liquid chromatography was proposed.

比较了茄尼醇提取物粗提纯方法；采用液相制备色谱法进行粗提纯。

9·Perspective in the applications and developments of high preparative performance liquid chromatography were discussed.

探讨了高效制备液相色谱技术的应用和发展前景。

10·Abstract : A medium pressure preparative liquid chromatography (MPLC) was used to isolate the aloins A and B and isoaloeresin D from Aloe vera simultaneously for the first time.

摘要 ： 首次采用反相中压制备色谱从芦荟中一次分离制备得到芦荟苷A、B以及异芦荟色苷D。