Preparation and Stability of Moisturizing Essence Liquid from Trollius Chinensis Bunge Stem Extract

The stem, a byproduct of traditional Chinese herbal medicine Trollius chinensis Bunge, has not been effectively developed and utilized for a long time. In this study, the polysaccharides and flavonoids from Trollius chinensis Bunge was used as main ingredient in moisturizing essence liquid, and the preparation and stability of moisturizing essence liquid was studied. The approach was as follows: The main active ingredients, including the compound extract of polysaccharides and flavonoids from the stem of Trollius chinensis Bunge, 1, 2-propanediol, sodium hyaluronate, glycerol and rose hydrosol were used as single factors, the orthogonal test method was used to optimize the formula by moisturizing retention rate. The preparation and stability of moisturizing essence liquid were also determined. The results showed that the optimum formula of essence liquid was as follows: Polysaccharides and flavonoids compound extract of TC stem 2.5%, 1,2-propanediol 6%, glycerol 4%, sodium hyaluronate 0.6%, rose hydrosol 4%. The moisturizing retention rate was up to 99.30%, which was significantly higher than the control products. The essence liquid demonstrated improved cold and heat resistance, showing no delamination after centrifugation. The optimized essence liquid exhibited an advantage in the moisture retention rate test compared with the control products. This study lays the application foundation for the development and utilization of the waste Trollius chinensis Bunge stem.