Search

CN-122005382-A - Preparation method of paeonia lactiflora root extract

CN122005382ACN 122005382 ACN122005382 ACN 122005382ACN-122005382-A

Abstract

The invention relates to the technical field of skin care product raw materials, and particularly discloses a preparation method of paeonia lactiflora root extract, which comprises the following steps of 1) putting paeonia lactiflora root into an extracting solution, heating and pressurizing for extraction to obtain an extract; and 2) filtering the extract, taking filtrate, concentrating and drying the filtrate to obtain paeonia lactiflora root extract rich in beta-pentagalloylglucose and oleanolic acid, wherein the extracting solution is a compound of ethanol aqueous solution, acetic acid, acetone and chloroacetaldehyde. The invention has the advantage that more beta-pentagalloylglucose and oleanolic acid are extracted from paeonia lactiflora root, so that the whitening and antioxidation effects of the paeonia lactiflora root extract are further improved.

Inventors

  • ZHAO RUYI
  • DU WENBO
  • Chu Zengji

Assignees

  • 广州宝仪生物科技有限公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (8)

  1. 1. A preparation method of paeonia lactiflora root extract is characterized by comprising the following steps: Step 1), adding paeonia lactiflora roots into the extracting solution, and heating and pressurizing for extraction to obtain an extract; step 2), filtering the extract, taking filtrate, concentrating and drying the filtrate to obtain paeonia lactiflora root extract rich in beta-pentagalloylglucose and oleanolic acid; the extracting solution is a compound of ethanol water solution, acetic acid, acetone and chloroacetaldehyde.
  2. 2. The method for preparing paeonia lactiflora root extract according to claim 1, wherein the mass ratio of ethanol aqueous solution, acetic acid, acetone and chloroacetaldehyde in the extract is 100:28-32:12-15:10-13.
  3. 3. The method for preparing paeonia lactiflora root extract according to claim 2, wherein the mass content of ethanol in the ethanol aqueous solution is 75-80%.
  4. 4. The method for preparing paeonia lactiflora root extract according to any one of claims 1 to 3, wherein in the step 1), the extraction temperature is 44-48 ℃.
  5. 5. The method of claim 4, wherein in step 1), the extraction pressure is 580-600MPa.
  6. 6. The method of claim 5, wherein the extraction time in step 1) is 10-15min.
  7. 7. The method of claim 6, wherein in step 1), the radix Paeoniae is pulverized into radix Paeoniae particles of 80-100 mesh, and then the radix Paeoniae particles are added into the extractive solution.
  8. 8. The method of claim 7, wherein in the step 1), the mass ratio of the paeonia lactiflora root to the extract is 1:10-20.

Description

Preparation method of paeonia lactiflora root extract Technical Field The invention relates to the field of skin care product raw materials, in particular to a preparation method of paeonia lactiflora root extract. Background Along with the improvement of the safety requirements of people on skin care products raw materials, the plant extracts become one of the raw materials of most skin care products, different plant extracts contain different active ingredients, and various active ingredients can play various skin care effects, wherein the paeonia lactiflora extract has whitening and antioxidation effects, is one of the plant extracts commonly used in skin care products, the highest-content component in paeonia is paeoniflorin, is one of main components playing the roles of whitening and antioxidation, but the paeonia lactiflora also contains beta-pentagalloyl glucose and oleanolic acid, the beta-pentagalloyl glucose and oleanolic acid have quite remarkable whitening and antioxidation effects, and the higher the content of the beta-pentagalloyl glucose and oleanolic acid in the paeonia lactiflora extract is, the more remarkable the whitening and antioxidation effects are. However, in order to control the cost, in the extraction, the paeonia lactiflora root with low cost is generally adopted as a raw material, the theoretical mass content of beta-pentagalloylglucose in the paeonia lactiflora root is 0.1%, the theoretical mass content of oleanolic acid is 0.1%, and the theoretical mass content of paeoniflorin is 1.5%, therefore, the contents of beta-pentagalloylglucose and oleanolic acid in the paeonia lactiflora root are far lower than those of paeoniflorin, and therefore, in the extraction, the rare beta-pentagalloylglucose and oleanolic acid are generally poor in extraction effect, so that the contents of beta-pentagalloylglucose and oleanolic acid in the paeonia lactiflora root extract are low, and the whitening and antioxidation effects of the paeonia lactiflora root extract are not expected, so that there is room for improvement. Disclosure of Invention In order to extract more beta-pentagalloylglucose and oleanolic acid from paeonia lactiflora roots, so that the whitening and antioxidation effects of the paeonia lactiflora root extract are further improved, the application provides a preparation method of the paeonia lactiflora root extract. The preparation method of the paeonia lactiflora root extract provided by the application adopts the following technical scheme: A preparation method of paeonia lactiflora root extract comprises the following steps: Step 1), adding paeonia lactiflora roots into the extracting solution, and heating and pressurizing for extraction to obtain an extract; step 2), filtering the extract, taking filtrate, concentrating and drying the filtrate to obtain paeonia lactiflora root extract rich in beta-pentagalloylglucose and oleanolic acid; the extracting solution is a compound of ethanol water solution, acetic acid, acetone and chloroacetaldehyde. According to the technical scheme, the paeonia lactiflora root is extracted under the conditions of heating and pressurizing by adopting the extracting solution compounded by the ethanol water solution, the acetic acid, the acetone and the chloroacetaldehyde, the beta-pentagalloylglucose and the oleanolic acid can be well promoted to be extracted from the paeonia lactiflora root and dissolved in the extracting solution under the action of the extracting solution, so that the extracting efficiency of the beta-pentagalloylglucose and the oleanolic acid is higher, the content of the beta-pentagalloylglucose and the oleanolic acid in the obtained paeonia lactiflora root extract is higher, the theoretical content of the beta-pentagalloylglucose and the oleanolic acid can be close, the whitening and antioxidation effects of the paeonia lactiflora root extract are obviously improved, the skin care effect requirements of skin care products are better met, the extracting process steps are simple, the quality of the prepared extract is better, the cost is lower, and the economic value is higher. Preferably, in the extracting solution, the mass ratio of the ethanol aqueous solution to the acetic acid to the acetone to the chloroacetaldehyde is 100:28-32:12-15:10-13. By adopting the technical scheme, the effect of promoting the extraction of the beta-pentagalloylglucose and oleanolic acid from the paeonia lactiflora roots and dissolving the beta-pentagalloylglucose and oleanolic acid in the extracting solution is better by specifically selecting the mass ratio of the ethanol aqueous solution, acetic acid, acetone and chloroacetaldehyde, and the content of the beta-pentagalloylglucose and oleanolic acid in the paeonia lactiflora root extract is higher, so that the whitening and antioxidation effects of the paeonia lactiflora root extract are more remarkable. Preferably, the mass content of the ethanol in the ethanol water solution is 75-80%. B