方法在透析后的几丁糖与明胶混合液中加入戊二醛交联后置入冻干机冻干制得几丁糖膜。
Method chitosan film was prepared by casting the mixed solution of dialysed chitosan and gelatin after crosslinking with glutaraldehyde in freeze dryer.
含有四个碳原子的醛糖，丁糖，有两个手性碳原子；
Aldoses with four carbon atoms, the tetroses, have two chiral carbon atoms;
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