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Clean conversion of cellulose into fermentable glucose

Paper ID Volume ID Publish Year Pages File Format Full-Text
14737 1244 2009 8 PDF Available
Title
Clean conversion of cellulose into fermentable glucose
Abstract

We studied the process of conversion of microcrystalline-cellulose into fermentable glucose in the formic acid reaction system using cross polarization/magic angle spinning 13C-nuclear magnetic resonance, X-ray diffraction and Fourier transform infrared spectroscopy. The results indicated that formic acid as an active agent was able to effectively penetrate into the interior space of the cellulose molecules, thus collapsing the rigid crystalline structure and allowing hydrolysis to occur easily in the amorphous zone as well as in the crystalline zone. The microcrystalline-cellulose was hydrolyzed using formic acid and 4% hydrochloric acid under mild conditions. The effects of hydrochloric acid concentration, the ratio of solid to liquid, temperature (55–75 °C) and retention time (0–9 h), and the concentration of glucose were analyzed. The hydrolysis velocities of microcrystalline-cellulose were 6.14 × 10− 3 h− 1 at 55 °C, 2.94 × 10− 2 h− 1 at 65 °C, and 6.84 × 10− 2 h− 1 at 75 °C. The degradation velocities of glucose were 0.01 h− 1 at 55 °C, 0.14 h− 1 at 65 °C, 0.34 h− 1 at 75 °C. The activation energy of microcrystalline-cellulose hydrolysis was 105.61 kJ/mol, and the activation energy of glucose degradation was 131.37 kJ/mol.

Keywords
CP–MAS 13C-NMR; X-ray; Microcrystalline-cellulose; Hydrolysis; Kinetics
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Clean conversion of cellulose into fermentable glucose
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biotechnology Advances - Volume 27, Issue 5, September–October 2009, Pages 625–632
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us