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Updated: Apr 30, 2026
05:59
An In Vitro Dissolution Determination of Multi-Index Components in Tibetan Medicine Rhodiola Granules
Published on: November 4, 2022
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[Study on preparation and in vitro characteristics of ginsenoside Rg3 binary solid dispersion]
Summary
Low molecular weight chitosan and poloxamer 188 enhance ginsenoside Rg3 dissolution. Solid dispersions achieved over 90% dissolution in 60 minutes, showing practical application value.
Area of Science:
- Pharmaceutical Sciences
- Materials Science
Background:
- Ginsenoside Rg3 exhibits poor water solubility, limiting its therapeutic efficacy.
- Developing effective drug delivery systems is crucial for improving ginsenoside Rg3 bioavailability.
Purpose of the Study:
- To prepare and characterize ginsenoside Rg3 solid dispersions using low molecular weight chitosan and poloxamer 188.
- To evaluate the in vitro dissolution performance of the prepared solid dispersions.
Main Methods:
- Solvent evaporation method was employed for solid dispersion preparation.
- In vitro dissolution testing was conducted over 60 minutes.
- Phase analysis utilized differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and X-ray diffraction (X-RD).
Main Results:
- Ginsenoside Rg3 solid dispersions prepared with a 2:1 ratio of low molecular weight chitosan to poloxamer 188 exhibited a cumulative dissolution rate exceeding 90% within 60 minutes.
- Characterization confirmed that ginsenoside Rg3 was dispersed in an amorphous state within the carrier matrix.
- The solid dispersions demonstrated significantly improved drug dissolution compared to the free drug.
Conclusions:
- Low molecular weight chitosan and poloxamer 188 are effective carriers for creating ginsenoside Rg3 solid dispersions.
- The developed solid dispersions significantly enhance ginsenoside Rg3 dissolution, indicating substantial practical application value.
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