In this paper, FDNB method, UV-spectrophotometry, Formaldehyde reaction-titration method and Viscometry were tried to use in measuring the gelatin hydrolysis degree in the process of the reaction.
The preparation of gelatin hydrolyzed with AS1. 398 neutral protease at different temperatures. The hydrolysis degree was tested by means of formaldehyde titration.
在不同的温度下，用as1.398中性蛋白酶制备水解明胶，甲醛滴定法测定明胶的水解程度。
3
A laboratory method of preparing controlled release capsules floated in artificial gastric juice was developed by crosslinking the gelatin capsules with formaldehyde vapor.