Preparation and Functional Evaluation of Compound Bletilla striata Essence

Abstract

The purpose of this study was to prepare a multi-functional skin care product and apply more plant resources to the skin care industry. The crude polysaccharides from Bletilla striata, Panax ginseng, and Tremella fuciformis were extracted under different conditions based on the characteristics of the plants. The formula ratio of the compound Bletilla striata essence was optimized through an orthogonal experiment. The moisturizing, whitening, and antioxidant properties of the compound essence were evaluated by the weighing method, tyrosinase activity test, and DPPH free radical scavenging test, respectively. Finally, the improvement degree of skin condition was detected using a skin water and oil test instrument. The results showed that the polysaccharide contents of Bletilla striata, Panax ginseng, and Tremella fuciformis were 18.00±0.5, 41.70±0.7, and 20.25±0.6%, respectively. The optimal formula for the essence was: Bletilla striata extract 12 mg, Panax ginseng extract 8 mg, Tremella fuciformis extract 8 g, sodium hyaluronate 20 mg, and ultrapure water 50 mL. The moisture retention rate of the essence was 80.00±3.0%, the tyrosinase inhibition rate was 69.04±2.2%, and the DPPH radical scavenging rate was 71.03±2.5%. The skin water and oil test results showed that the compound essence can increase skin moisture and reduce skin oil. The product can reduce the content of pores, stains, wrinkles, roughness, acne and pigmentation, and has the potential to become a functional, natural and safe skin care product.