Depolymerization of microcrystalline cellulose by the combination of ultrasound and Fenton reagent

作者：Zhang, Mei-Fang; Qin, Yuan-Hang^*; Ma, Jia-Yu; Yang, Li; Wu, Zai-Kun; Wang, Tie-Lin; Wang, Wei-Guo; Wang, Cun-Wen

来源：Ultrasonics Sonochemistry, 2016, 31: 404-408.

DOI：10.1016/j.ultsonch.2016.01.027

• Microcrystalline cellulose
• Fenton reagent
• Ultrasound
• Depolymerization

In this study, the combined use of Fenton reagent and ultrasound to the pretreatment of microcrystalline cellulose (MCC) for subsequent enzyme hydrolysis was investigated. The morphological analysis showed that the aspect ratio of MCC was greatly reduced after pretreatment. The X-ray diffraction (XRD) and degree of polymerization (DP) analyses showed that Fenton reagent was more efficient in decreasing the crystallinity of MCC while ultrasound was more efficient in decreasing the DP of MCC. The combination of Fenton reaction and ultrasound, which produced the lowest crystallinity (84.8 +/- 0.2%) and DP (124.7 +/- 0.6) of MCC and the highest yield of reducing sugar (22.9 +/- 0.3 g/100 g), provides a promising pretreatment process for MCC depolymerization.

• 出版日期2016-7
• 单位武汉工程大学