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Dissolution of Microcrystalline Cellulose in Phosphoric Acid—Molecular Changes and Kinetics

In this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 °C. The structural changes of MCC were de... Full description

Journal Title: Molecules 01 December 2009, Vol.14(12), pp.5027-5041
Main Author: Pingkai Ouyang
Other Authors: Zhenjiang Li , Shijie Liu , Jun Zhang , Tianming Chen , Lu Lin , Junhua Zhang , Jingqiang Zhang
Format: Electronic Article Electronic Article
Language: English
Subjects:
MCC
ID: ISSN: 1420-3049 ; E-ISSN: 1420-3049 ; DOI: 10.3390/molecules14125027
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title: Dissolution of Microcrystalline Cellulose in Phosphoric Acid—Molecular Changes and Kinetics
format: Article
creator:
  • Pingkai Ouyang
  • Zhenjiang Li
  • Shijie Liu
  • Jun Zhang
  • Tianming Chen
  • Lu Lin
  • Junhua Zhang
  • Jingqiang Zhang
subjects:
  • Kinetic
  • MCC
  • Phosphoric Acid
  • Decrystallization
  • Structural Change
  • Chemistry
ispartof: Molecules, 01 December 2009, Vol.14(12), pp.5027-5041
description: In this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 °C. The structural changes of MCC were determined in detail with X-ray powder diffraction, solid-state cross-polarization magic angle spinning 13C-NMR, and X-ray photoelectron spectroscopy. The kinetics of MCC decrystallization during treatment with phosphoric acid was also compared at 30, 50, and 70 °C. With the assumption of first order kinetics, the Arrhenius parameters of K, A0 and Ea were calculated. The rate constants of decrystallization reaction (K) were 0.06, 0.17, and 0.12 h-1 respectively. The pre-exponential factor (A0) was 1.2 × 106 h-1, and the activation energy (Ea) was 42.4 kJ/mol.
language: eng
source:
identifier: ISSN: 1420-3049 ; E-ISSN: 1420-3049 ; DOI: 10.3390/molecules14125027
fulltext: fulltext_linktorsrc
issn:
  • 1420-3049
  • 14203049
url: Link


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titleDissolution of Microcrystalline Cellulose in Phosphoric Acid—Molecular Changes and Kinetics
creatorPingkai Ouyang ; Zhenjiang Li ; Shijie Liu ; Jun Zhang ; Tianming Chen ; Lu Lin ; Junhua Zhang ; Jingqiang Zhang
ispartofMolecules, 01 December 2009, Vol.14(12), pp.5027-5041
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subjectKinetic ; MCC ; Phosphoric Acid ; Decrystallization ; Structural Change ; Chemistry
descriptionIn this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 °C. The structural changes of MCC were determined in detail with X-ray powder diffraction, solid-state cross-polarization magic angle spinning 13C-NMR, and X-ray photoelectron spectroscopy. The kinetics of MCC decrystallization during treatment with phosphoric acid was also compared at 30, 50, and 70 °C. With the assumption of first order kinetics, the Arrhenius parameters of K, A0 and Ea were calculated. The rate constants of decrystallization reaction (K) were 0.06, 0.17, and 0.12 h-1 respectively. The pre-exponential factor (A0) was 1.2 × 106 h-1, and the activation energy (Ea) was 42.4 kJ/mol.
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In this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 °C. The structural changes of MCC were determined in detail with X-ray powder diffraction, solid-state cross-polarization magic angle spinning 13C-NMR, and X-ray photoelectron spectroscopy. The kinetics of MCC decrystallization during treatment with phosphoric acid was also compared at 30, 50, and 70 °C. With the assumption of first order kinetics, the Arrhenius parameters of K, A0 and Ea were calculated. The rate constants of decrystallization reaction (K) were 0.06, 0.17, and 0.12 h-1 respectively. The pre-exponential factor (A0) was 1.2 × 106 h-1, and the activation energy (Ea) was 42.4 kJ/mol.

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In this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 °C. The structural changes of MCC were determined in detail with X-ray powder diffraction, solid-state cross-polarization magic angle spinning 13C-NMR, and X-ray photoelectron spectroscopy. The kinetics of MCC decrystallization during treatment with phosphoric acid was also compared at 30, 50, and 70 °C. With the assumption of first order kinetics, the Arrhenius parameters of K, A0 and Ea were calculated. The rate constants of decrystallization reaction (K) were 0.06, 0.17, and 0.12 h-1 respectively. The pre-exponential factor (A0) was 1.2 × 106 h-1, and the activation energy (Ea) was 42.4 kJ/mol.

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