Preparation method and application of quick response type food indication film

The invention discloses a preparation method of a quick response type food indication film. Stirring and mixing the sa-hao seed gum solution and the soybean protein isolate solution to obtain a sa-hao seed gum-soybean protein isolate mixed solution; adding a certain amount of glycerol into the artemisia glue-soybean protein isolate mixed solution, stirring for a certain time to obtain a film forming solution, drying the film forming solution to form a film to obtain a composite film, cutting a proper amount of the composite film, and soaking the composite film into an anthocyanin solution to obtain the self-assembled anthocyanin composite film. The quick response indicating film with strong color development is obtained in a self-assembly mode. The color of the indicating film changes along with the freshness of the meat product, and the quality state of the meat product in the package can be rapidly indicated. 本发明公开了一种快速响应型食品指示膜的制备方法，包括以下步骤；将沙蒿胶溶液与大豆分离蛋白溶液搅拌混合，得沙蒿胶-大豆分离蛋白混合溶液；向沙蒿胶-大豆分离蛋白混合溶液加入一定量的甘油搅拌一定时间得到成