Mechanism of Bamboo Lignin Degradation in GIF Biomimetic Bleaching

The mechanism of bamboo lignin degradation in GIF biomimetic bleaching was studied,the results showed that the contents of phenolic hydroxyl group,aliphatic hydroxyl group,and p-hydroxyl phenyl were increased;the contents of methoxyl group,carbonyl group,guaiacyl and syringyl were decreased;the linkages of β-O-4,β-1 and β-5 were broken;the benzyl ring was opened;the molecular weight of bamboo lignin was decreased and the polydispersity was increased after GIF biomimetic treatment.