Analysis of Cordyceps by multi-column liquid chromatography

Area of Science:

• Pharmacology
• Analytical Chemistry
• Traditional Chinese Medicine

Background:

• Cordyceps is a widely recognized traditional Chinese medicine with a long history of use.
• Ensuring the quality and consistency of Cordyceps products is crucial for its therapeutic efficacy.
• Existing analytical methods may not fully capture the complex molecular composition of Cordyceps.

Purpose of the Study:

• To develop and validate a multi-column liquid chromatography (MC-LC) system for the comprehensive qualitative analysis of Cordyceps.
• To differentiate and identify both macromolecular and micromolecular components within Cordyceps samples.
• To establish a robust method for the quality control of Cordyceps.

Main Methods:

• Development of a novel MC-LC system incorporating size exclusion pre-column, size exclusion chromatography (SEC), and reversed-phase (RP) columns.
• Utilized column-switching valves for sequential separation of sample fractions.
• Employed a diode array detector (DAD) and mass spectrometry (MS) for sensitive component detection and identification.

Main Results:

• The MC-LC system effectively separated Cordyceps into macromolecular and micromolecular fractions.
• Analysis revealed two distinct macromolecular peaks and fifteen micromolecular peaks.
• Eleven specific micromolecular compounds were identified, including adenosine-5'-monophosphate (AMP), phenylalanine, and cordycepin.

Conclusions:

• The developed MC-LC method provides a powerful tool for the qualitative analysis of complex mixtures in Cordyceps.
• This analytical approach enables the identification of key bioactive compounds, contributing to quality assessment.
• The method holds significant potential for the standardization and quality control of Cordyceps-based traditional Chinese medicines.