Study on extraction of dihydroquercetin by adsorbing
Dihydroquercetin was effectively extracted from larch by adsorbing. The key factors including the extraction temperature, extraction time, the ratio between water and material, and the amount of polyamide are all studied. By using single factor and orthogonal test, the optimal conditions were identified: extraction temperature 90℃, extraction time 1h, the ratio of liquid to solid 18∶1, and the amount of polyamide for 23% of material. Under the optimal condition, the extraction yield of dihydroquercetin from larch can reach 0.814%.