Optimization of Accelerated Solvent Extraction of Ginsenosides from Cultivated Wild Ginseng Using Response Surface...

Area of Science:

• Phytochemistry
• Analytical Chemistry
• Chemical Engineering

Background:

• Ginsenosides are key bioactive compounds in ginseng with significant health benefits.
• Cultivated wild ginseng requires efficient extraction methods to maximize the recovery of valuable ginsenosides.
• Optimizing extraction parameters is crucial for yield and purity.

Purpose of the Study:

• To develop and optimize an accelerated solvent extraction (ASE) method for ginsenosides from cultivated wild ginseng.
• To apply response surface methodology (RSM) for modeling and optimizing the ASE technique.
• To determine the optimal conditions for extracting the sum of specific ginsenosides (Rg1, Rb1, Rg3) and total ginsenosides.

Main Methods:

• Utilized accelerated solvent extraction (ASE) combined with response surface methodology (RSM).
• Employed a five-level, three-factor central composite design for RSM modeling.
• Investigated parameters including ethanol concentration, temperature, and extraction time.

Main Results:

• Identified optimal extraction conditions: 88.64% ethanol, 105.98°C-129.66°C, 15.92-28.77 min.
• Achieved experimental yields of 7.45 mg/g for the sum of Rg1, Rb1, Rg3 and 32.82 mg/g for total ginsenosides.
• Model predictions closely matched experimental extraction yields, demonstrating model accuracy.

Conclusions:

• The optimized ASE method, guided by RSM, is highly effective for ginsenoside extraction from cultivated wild ginseng.
• RSM provides a robust framework for optimizing complex extraction processes.
• The established optimal conditions ensure efficient recovery of valuable ginsenosides.