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X-ray diffraction, IR spectroscopy and thermal characterization of partially hydrolyzed guar gum.
MedLine Citation:
PMID:  22409871     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Guar gum was hydrolyzed using cellulase from Aspergillus niger at 5.6 pH and 50°C temperature. Hydrolyzed guar gum sample was characterized using Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, X-ray diffraction, dilute solution viscometry and rotational viscometry. Viscometry analysis of native guar gum showed a molecular weight of 889742.06, whereas, after enzymatic hydrolysis, the resultant product had a molecular weight of 7936.5. IR spectral analysis suggests that after enzymatic hydrolysis of guar gum there was no major transformation of functional group. Thermal analysis revealed no major change in thermal behavior of hydrolyzed guar gum. It was shown that partial hydrolysis of guar gum could be achieved by inexpensive and food grade cellulase (Aspergillus niger) having commercial importance and utilization as a functional soluble dietary fiber for food industry.
Authors:
Deepak Mudgil; Sheweta Barak; B S Khatkar
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-3
Journal Detail:
Title:  International journal of biological macromolecules     Volume:  -     ISSN:  1879-0003     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7909578     Medline TA:  Int J Biol Macromol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier B.V.
Affiliation:
Department of Food Technology, Guru Jambheshwar University of Science and Technology, Hisar 125001, India.
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