Edible film coating liquid as well as preparation method and application thereof

The invention discloses an edible film coating liquid. The edible film coating liquid is prepared by taking chitosan, blackberry anthocyanin and tea polyphenol as raw materials. The concentration of the chitosan in the edible film coating liquid is 1.75 g/100 ml to 2.25 g/100 ml, the concentration of the blackberry anthocyanin in the edible film coating liquid is 0.005 g/100 ml to 0.05 g/100 ml, and the concentration of the tea polyphenol in the edible film coating liquid is 0.05 g/100 ml to 0.15 g/100 ml. Chitosan is used as a coating liquid matrix, blackberry anthocyanin and tea polyphenol are added to serve as active substances, the fresh-keeping effect of the coating liquid can be effectively improved, and meanwhile the transparency of the coating liquid is not changed, so that the sense of fresh-keeping meat is not affected. 本发明公开了一种可食用涂膜液，该可食用涂膜液以壳聚糖、黑莓花色苷和茶多酚为原料配制而成；本发明可食用涂膜液中壳聚糖的浓度为1.75g/100ml～2.25g/100ml，黑莓花色苷的浓度为0.005g/100ml～0.05g/100ml，茶多酚的浓度为0.05g/100ml～0.15g/100ml。本发明以壳聚糖作为涂膜液基质，并添加黑莓花色苷和茶多酚作为活性物