How To Extract Quercetin？

This article introduces the method of preparing quercetin from Sophora japonica. This has certain reference significance for the utilization of Sophora Japonica Extract Quercetin as a natural ingredient.

Sophora japonica is a leguminous plant SophorajaponicaL. The dried buds of Sophora japonica mainly contain rutin, betulinol, sophorodiol, quercetin and sophora saponins. Ding is hydrolyzed into quercetin under the action of enzymes or acids. Studies have shown that quercetin has various biological activities such as anti-platelet aggregation, analgesia, antibacterial, antiviral, anti-aging, anti-inflammatory, anti-allergic, anti-free radical and antioxidant. And it is non-toxic, harmless, non-lethal, teratogenic, mutagenic and other effects on the human body.

Extraction of Quercetin

The solubility of rutin in cold and hot water varies greatly. To extract quercetin from Sophora japonica, it is necessary to first extract rutin, and then hydrolyze it to generate quercetin. The extraction methods of rutin mainly include alkali-soluble acid precipitation method, organic solvent extraction method, dipping method and so on. Among them, the alkali-soluble acid precipitation method is the best, and this method is used in production.

There are many studies on the extraction of quercetin from the natural plant Sophora japonica. The factors that affect the extraction rate of active ingredients include the origin of the plant, medicinal parts, collection time, extraction method, extraction solvent, extraction temperature, material-liquid ratio, extraction time and particle size of medicinal materials.

Summary

Quercetin has important application prospects in food and medicine. However, a simple and efficient method and process for extracting quercetin from natural plants remains to be further studied.