ScholarLens Back to search
2007•Zhongguo yaofangRequires access

Study on Acid-water Boiling Extraction Technique for Herba Ephedrae

Cheng Li

Open publisher page 0 citations

Abstract

OBJECTIVE: To optimize the technique for extraction of Ephedrine and Pseudoephedrine in Herba ephedrae. METHODS: HPLC was used to determine the contents of Ephedrine and Pseudoephedrine in Herba ephedrae, and orthogonal test was applied to optimize the extraction technique. RESULTS: The optimized extraction technique was as follows: using 10- fold water for the first time and extracting for 45 mins; using 8- fold water for the second time and extracting for 30 mins; setting pH of water at 3. CONCLUSIONS: This extraction technique is well- grounded, and the content determination method is simple, safe and reliable.

About this research paper

What this paper is about

OBJECTIVE: To optimize the technique for extraction of Ephedrine and Pseudoephedrine in Herba ephedrae. METHODS: HPLC was used to determine the contents of Ephedrine and Pseudoephedrine in Herba ephedrae, and orthogonal test was applied to optimize the extraction technique. RESULTS: The optimized extraction technique was as follows: using 10- fold water for the first time and extracting for 45 mins; using 8- fold water for the second time and extracting for 30 mins; setting pH of water at 3. CONCLUSIONS: This extraction technique is well- grounded, and the content determination method is simple, safe and reliable.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

OBJECTIVE: To optimize the technique for extraction of Ephedrine and Pseudoephedrine in Herba ephedrae. METHODS: HPLC was used to determine the contents of Ephedrine and Pseudoephedrine in Herba ephedrae, and orthogonal test was applied to optimize the extraction technique. RESULTS: The optimized extraction technique was as follows: using 10- fold water for the first time and extracting for 45 mins; using 8- fold water for the second time and extracting for 30 mins; setting pH of water at 3. CONCLUSIONS: This extraction technique is well- grounded, and the content determination method is simple, safe and reliable.

Key concepts: Ephedrine, Pseudoephedrine, Extraction (chemistry), Chromatography, Boiling, Chemistry, Water extraction, High-performance liquid chromatography

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Study on Acid-water Boiling Extraction Technique for Herba Ephedrae — Research Paper | ScholarLens