Method for extracting dihydroquercetin from larix gmelini wood powder

Abstract

The invention aims to carry out microwave pre-treatment by utilizing ionic liquid lithium salt before ultrasonic extraction, so as to dissolve part of a plant cell wall, enhance cellular permeability, accelerate solvent permeation, improve solvent function efficiency, and achieve the purpose of improving the extraction efficiency of dihydroquercetin. The method can remarkably improve dihydroquercetin yield, and is characterized by comprising the following steps: step 1, completely drying part of larch hadromestome, and smashing with a pulverizer; step 2, dissolving with a ionic liquid; step 3, adding larch wood powder obtained in the step 1 into the liquid obtained in the step 2, stirring fast to obtain a uniform liquid, and completely steaming out an organic solvent diluting ionic liquid lithium salt with a rotary evaporator; step 4, adopting microwave to further pretreat the product obtained in the step 3; step 5, further adding deionized water into the pretreated product after the pretreatment is finished, and carrying out ultrasonic auxiliary extraction; step 6, filtering, taking 1 mL filtrate for centrifugation, and carrying out HPLC detection.

Description

technical field [0001] The invention relates to the field of natural product chemistry, in particular to a method for extracting dihydroquercetin from larch wood powder. Background technique [0002] Dihydroquercetin, also known as Taxifolin and Taxifolin, is a bioflavonoid. As a powerful antioxidant, dihydroquercetin is widely used. Dihydroquercetin can effectively eliminate excess free radicals from the human body, promote the permeability of capillaries, improve immune function, reduce the formation of cancer, and prevent cardiovascular diseases. It restores the elasticity of capillaries, prevents inflammation and The formation of lumps. At the same time, it is also a high natural food antioxidant, and the antioxidant effect of dihydroquercetin exceeds that of other antioxidants such as quercetin, rutin and synthetic antioxidants. Adding dihydroquercetin to vegetable oil, animal fat, dry milk powder, and fat-containing confectionery can extend its validity period by 2 ...

AI Technical Summary

Problems solved by technology

These traditional extraction processes have certain disadvantages. Compared with these traditional extraction processes, the "Study on Ultrasonic-Assisted Extraction of Dihydroquercetin from Larch Wood Powder by Ionic Liquid-Lithium Salt Microwave Pretreatment" shows that these traditional extraction processes The process time is long, the temperature is high, and the system is open. The process is easy to cause thermal instability, damage and volatilization loss of easily oxidized components, and has a destructive effect on some components.