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China Surfactant Detergent & Cosmetics ›› 2025, Vol. 55 ›› Issue (11): 1378-1387.doi: 10.3969/j.issn.2097-2806.2025.11.002

• Invited paper • Previous Articles     Next Articles

Preparation and skin-whitening activity evaluation of phenylethyl resorcinol/chitosan Pickering emulsion

Qiusi Yan1,Hui Bi1,Wenxin Dong2,Aihua Zou1,*()   

  1. 1. College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200030, China
    2. Gezhi Shanghai High School, Shanghai 200001, China
  • Received:2025-09-01 Revised:2025-11-27 Online:2025-11-22 Published:2025-12-22

Abstract:

Chitosan nanoparticles ((212.2±3.2) nm) were synthesized via sol-gel method by adjusting the pH of the chitosan solution. Using polydimethylsiloxane (PDMS) as the oil phase, a chitosan-based Pickering emulsion (CS-PE) was prepared by high-speed shear homogenization, with solid particle mass fraction of 0.4% and water-to-oil volume ratio of 4∶4. Phenylethyl resorcinol (PR) was subsequently loaded into the emulsion to form the PR-loaded CS-PE (PR CS-PE). The encapsulation efficiency and drug loading of PR in PR CS-PE were determined to be 97.2%±0.2% and 2.3%±0.01%, respectively. The radical scavenging rates of PR CS-PE for 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and 2, 2-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) were measured to be 77.4% and 93.8%, respectively, indicative of significant antioxidant activity. The results of Franz diffusion cell test indicated that the PR within the emulsion exhibited sustained release behavior. Furthermore, PR CS-PE could effectively inhibit the melanogenesis in zebrafish models, suggesting notable skin-whitening efficacy. Results of the zebrafish embryonic development and cytotoxicity assay indicated that the PR-loaded chitosan-based Pickering emulsion exhibited lower toxicity compared with free PR. These findings suggest the potential application of the PR/chitosan Pickering emulsion in cosmetics.

Key words: chitosan nanoparticle, Pickering emulsion, phenylethyl resorcinol, zebrafish, cytotoxicity

CLC Number: 

  • O648.2