Nanofiltration membrane separation preparation method of cosmetic grade pueraria isoflavones

Abstract

The invention discloses a method for separating and preparing cosmetic-grade pueraria isoflavone from pueraria raw materials by using a solvent-resistant nanofiltration membrane, which comprises the following preparation steps: (1) extracting total isoflavone from pueraria raw materials to obtain a pueraria isoflavone crude product; (2) enriching the total isoflavone by a macroporous adsorption resin column; (3) performing dialysis separation by a solvent-resistant nanofiltration membrane, recovering ethanol, performing concentration, and finally performing freeze drying to obtain a pueraria isoflavone highly finished product with high content and high dissolvability. The method of the invention successfully solves a series of problems, which restrict the application in the cosmetic field, of dark brown color, poor dissolvability at normal temperature, organic solvent residue, and the like for pueraria isoflavone products produced by traditional technology, and the method has great economic value and social benefit.

Description

technical field [0001] The invention belongs to the technical field of cosmetics, and in particular relates to a method of using solvent-resistant nanofiltration membrane technology to obtain kudzu root ( Pueraria lobata ) method for separating and preparing cosmetic-grade kudzu root isoflavones from raw materials. Background technique [0002] Beauty and makeup is an eternal theme in human society. Chemically synthesized ingredients have occupied a dominant position in the cosmetics industry for a long time. However, their toxicity, irritation, allergies and environmental pollution have caused people to have great concerns about the safety of synthetic cosmetics. to worry about [1] . Returning to nature, developing pure natural, non-toxic and side-effect cosmetics will surely become one of the themes for the sustainable and harmonious development of the cosmetics industry. At present, in the Japanese cosmetics market, cosmetics containing natural Chinese herbal medicines ...

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is to provide a method for separating and preparing cosmetic-grade pueraria isoflavones from pueraria raw materials by using solvent-resistant nanofiltration membrane technology, which successfully solves the problem of deepening color, poor solubility and organic A series of problems such as solvent residues that restrict its application in the field of cosmetics, develop natural green cosmetic raw material sources, and promote the in-depth development and utilization of kudzu root resources

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