Study on the preparation and quality standard of Callicarpa nudiflora film

摘要

Objective:To screen the best prescription and technology of Callicarpa nudiflora film,and to study and establish the quality standard of the flim.Methods:The orthogonal test was used to investigate the effect of PVA content,glycerin content,ethanol and water ratio on the comprehensive score of the coating agent;the general inspection method and content determination method were used to control the quality of Callicarpa nudiflora film,and the quality standard of the film was established.Results:The best formulation was selected as polyvinyl alcohol 6.0g,glycerin 2ml,ethanol:water 1:1.The appearance,stability,heat and cold resistance of the film were good,and the quality standard of the film was established.Conclusion:The formulation is simple and feasible,and the quality control method of the film is stable and feasible.