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Updated: Jun 13, 2026
05:59
An In Vitro Dissolution Determination of Multi-Index Components in Tibetan Medicine Rhodiola Granules
Published on: November 4, 2022
[Study on solubility of Chinese herbal compound by solubility parameter]
Dezhi Wu1, Lihua Chen, Sen Wang
1Key Laboratory for Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China. wudez@tom.com
Summary
Solubility parameters accurately predict Chinese herbal compound solubility. Liangfu components are liposoluble, dissolving in organic solvents but not water, aiding formulation.
Area of Science:
- Pharmacology
- Physical Chemistry
- Traditional Chinese Medicine
Context:
- Understanding the solubility of Traditional Chinese Medicine (TCM) components is crucial for effective drug formulation and delivery.
- Traditional methods for assessing solubility can be time-consuming and less precise.
- Solubility parameters offer a quantitative approach to predict and understand solute-solvent interactions.
Purpose:
- To demonstrate the utility of solubility parameters in characterizing the solubility of a specific Chinese herbal compound, Liangfu.
- To determine the solubility parameters of Liangfu effective components and the compound using inverse gas chromatography (IGC) and group contribution methods.
- To visually represent and verify the solubility predictions using Hansen solubility parameters (HSP) and approximate solubility tests.
Summary:
- Liangfu effective components and the compound exhibit significant liposolubility, dissolving readily in solvents like chloroform, ethyl acetate, acetone, octanol, and ether.
- They show slight solubility in polar solvents such as glycerol, methanol, ethanol, and propanediol.
- Insolubility in water was confirmed, aligning with approximate solubility tests and indicating a preference for non-polar environments.
Impact:
- Solubility parameters provide an accurate, convenient, and visual method for assessing the solubility of Chinese herbal compounds.
- This approach can significantly aid in the rational design and optimization of formulations for TCMs.
- The findings facilitate the selection of appropriate solvents for extraction, purification, and drug delivery systems involving Liangfu.
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