摘要
氧化组分1与氧化组分2在适当的配比下构成的双组分氧化体系能产生良好的协同作用,可以将糊化后的可溶性淀粉活化成具有较多活性基团的糊化活化淀粉。经过糊化后活化的淀粉,含有更多的活性基团,从而增加了后续反应的活性。由正交实验可以看出,得到含羧基量较多的糊化活化淀粉最佳反应条件为pH值3.0;氧化组分1用量4%;温度85℃;时间4 h。而得到含羰基量较多的糊化活化淀粉最佳反应条件为pH值5.0;氧化组分1用量12%;温度95℃;时间2 h。并且J值也远远小于I值,表明所得到的含羰基量远远多余含羧基量,得到含羰基量较多的糊化活化淀粉的反应条件要相对容易控制。并且得到的含羰基糊化活化淀粉可以与蛋白质的氨基之间形成交联,可作为淀粉填料的中间产品。
The two-element oxidation system composea ot oxidation element Ⅰ and oxidation eleinent Ⅱ can bring better cooperation effect, which activate the gelling starch. The gelled-activated starch has more active group and higher reaction capability. It was found that the optimum conditions to obtain the maximal carboxyl content was. pH = 3.0, the amount of oxidation element Ⅰ 4%,the temperature 85 ℃ and the time 4 h; mal carbonyl content was. pH = 5.0, the amount of the optimum conditions to obtain the maxioxidation element Ⅰ 12%,the temperature 95 ℃ and the time 2.0 h. And the value J was much less than value Ⅰ of the gelling activated starch, it indicated carbonyl content was more than carboxyl content, the control of reaction condition of getting carbonyl group was comparatively easy. And the carbonyl group gelled-activated starch can form cross-link with amidogen of protein, it was semifinished product of starch filling reagent.
出处
《皮革科学与工程》
CAS
2007年第3期12-15,共4页
Leather Science and Engineering
关键词
淀粉
双组分氧化体系
羧基
羰基
starch
the two-element oxidation system
carboxyl
carbonyl
