Response surface methodology (RSM) was employed to optimize the extraction of dihydromyricetin from Ampelopsis grossedentata leaves using dynamic microwave assisted multi-stage countercurrent extraction. The influence of temperature, pH, time and solvent/material ratio on the yield of extraction was investigated.
Another technique that is attracting growing attention in recent years is the multi-stage countercurrent extraction process (MCE).
We have previously reported the development of a novel extraction technique which combines microwave assisted extraction with multi-stage countercurrent extraction processes (MAMCE) .
Microwave assisted multi-stage countercurrent extraction (MAMCE) Microwave assisted MCE was carried out using the Microwave Accelerated Reaction System (MARS, CEM Corporation, Mattews, NC, USA).
Development of multi-stage countercurrent extraction technology for the extraction of glycyrrhizic acid (GA) from licorice (Glycyrrhiza uralensis Fisch).
Microwave assisted multi-stage countercurrent extraction of dihydromyricetin from Ampelopsis grossedentata.
The general techniques of medicinal plant extraction include maceration, infusion, percolation, digestion, decoction, hot continuous extraction (Soxhlet), aqueous-alcoholic extraction by fermentation, countercurrent extraction
, microwave-assisted extraction, ultrasound extraction (sonication), supercritical fluid extraction, and phytonic extraction (with hydrofluorocarbon solvents).