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Applied Biochemistry and Biotechnology

, Volume 177, Issue 1, pp 162–174 | Cite as

A Kinetic Study of DDGS Hemicellulose Acid Hydrolysis and NMR Characterization of DDGS Hydrolysate

  • Hanchi Chen
  • Shijie LiuEmail author
Article

Abstract

Liquid hot water (LHW) extraction was used as a pretreatment method to separate the hemicellulose fraction from dried distiller’s grain with solubles (DDGS) into liquid phase. Acid hydrolysis using 3.264 % w/w sulfuric acid at 130 °C was performed to convert polysaccharides in LHW extract to monosaccharides. The structure characterization of DDGS in anomeric carbon region based on proton NMR and heteronuclear single quantum coherence (HSQC) during acid hydrolysis was studied in this work. It reveals that the sugar units in DDGS hemicelluloses are constructed with (1-4)-β-d-xylopyranose and α-l-arabinofuranosyl residues. A kinetic model is included to explain the changing concentration of monomer, oligomer, and sugar units. The model was further tested based on the changing concentration of five carbon sugar units during hydrolysis.

Keywords

DDGS NMR HSQC characterization Acid hydrolysis Hydrolysis kinetics 

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Department of Paper and Bioprocess EngineeringState University of New York–College of Environmental Science and ForestrySyracuseUSA

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