Solvent extraction and purification of sugars from hemicellulose hydrolysates using boronic acid carriers

Griffin, Gregory John and Shu, Li 2004, Solvent extraction and purification of sugars from hemicellulose hydrolysates using boronic acid carriers, Journal of chemical technology and biotechnology, vol. 79, no. 5, pp. 505-511, doi: 10.1002/jctb.1013.

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Title Solvent extraction and purification of sugars from hemicellulose hydrolysates using boronic acid carriers
Author(s) Griffin, Gregory John
Shu, Li
Journal name Journal of chemical technology and biotechnology
Volume number 79
Issue number 5
Start page 505
End page 511
Total pages 7
Publisher John Wiley & Sons
Place of publication London, Eng.
Publication date 2004-05
ISSN 0268-2575
Keyword(s) solvent extraction
boronic acids
acid-soluble lignin
Summary Research was performed to determine whether it was technically feasible to use boronic acid extractants to purify and concentrate the sugars present in hemicellulose hydrolysates. Initially, five types of boronic acids (phenylboronic acid, 3,5-dimethylphenylboronic acid, 4-tert-butylphenylboronic acid, trans-β-styreneboronic acid or naphthalene-2-boronic acid) dissolved in an organic diluent (Shellsol® 2046 or Exxal® 10) containing the quaternary amine Aliquat® 336 were tested for their ability to extract sugars (fructose, glucose, sucrose and xylose) from a buffered, immiscible aqueous solution. Naphthalene- 2-boronic acid was found to give the greatest extraction of xylose regardless of which diluent was used. Trials were then conducted to extract xylose and glucose from solutions derived from the dilute acid hydrolysis of sugar cane bagasse and to then strip the loaded organic solutions using an aqueous solution containing hydrochloric acid. This produced a strip solution in which the xylose concentration had been increased over 7× that of the original hydrolysate while reducing the concentration of the undesirable acid-soluble lignin by over 90%. Hence, this process can be exploited to produce high concentration xylose solutions suitable for direct fermentation.
Language eng
DOI 10.1002/jctb.1013
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
HERDC collection year 2004
Copyright notice ©2004, John Wiley & Sons
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Document type: Journal Article
Collection: School of Engineering
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