Method for preventing hydrolysis of sodium alginate solution

　　Why does sodium alginate solution hydrolyze? Sodium alginate is a natural carbohydrate extracted from kelp. It is easy to be immersed by bacteria after being put into solution for too long, which leads to hydrolysis. When the sodium alginate solution is left for a long time (more than 3 days in summer and more than 5 days in winter), hydrolysis will occur. So how to effectively prevent the hydrolysis of sodium alginate solution? Please look down:
　

　　The method to solve the hydrolysis of sodium alginate solution;

　　Firstly, three important factors in the hydrolysis of sodium alginate solution are solved: first, the storage time should not be too long, and the pulp beaten on the same day should be used up as much as possible; Second, the storage temperature should not be too high. The higher the temperature, the easier it is to hydrolyze, especially in summer. Thirdly, the PH value should be well controlled. When the PH value is between 1 and 5, the sodium alginate solution is easily hydrolyzed.

　　Secondly, preservatives are added to sodium alginate, such as food-grade sodium benzoate to food-grade sodium alginate and chlorpromazine to printing and dyeing sodium alginate. This method can effectively prevent the hydrolysis of sodium alginate solution.