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xiaoyu1120: 金币+10, 翻译EPI+1 2013-06-23 17:49:57
The peak at 771 cm-1 is a combinative contribution from the various glycosides in Sample A before hydrolyzing, which has a red shift to 775 cm-1 after heating. It’s reported that the fructose hydrolyzed from the glycosides in Sample A can react with amino acids and produce nigerose, which makes the sample turn black after heating.
Ps;谱峰位移到775cm-1应该是红移
2楼2013-06-22 21:09:55
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