Nanofiltration membrane separation preparation method of cosmetic-grade pueraria isoflavone
A technology of kudzu root isoflavones and nanofiltration membranes, which is applied in the direction of cosmetic preparations, cosmetics, dressing preparations, etc., can solve the problems of deepening color and poor solubility, and achieve low cost, short preparation cycle, great economic value and social benefit effect
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[0033] The present invention will be further clarified through the detailed description of specific embodiments below, but it is not intended to limit the present invention, but only for illustration.
[0034] The method for separating and preparing cosmetic-grade kudzu root isoflavones from kudzu root raw materials by nanofiltration membrane technology comprises the following steps:
[0035] a, 80% ethanol extraction of total isoflavones in Pueraria lobata raw material: Weigh Pueraria lobata and take Pueraria lobata ( Pueraria lobata ) raw materials (can be purchased from the market, the kudzu root raw materials in this example are purchased from the Changsha Gaoqiao medicinal material market, and the total isoflavone content is 8.40% as detected by HPLC), respectively add 7 BV / 6BV / 4BV 80% ethanol to reflux at 75°C for extraction Three times (1h / time), combine all the alcohol extraction solutions, and pass through the Type-A nanofiltration membrane (solvent-resistant nanofilt...
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