Evaluation of Ion Exchange Resins for Removal of Inhibitory Compounds from Corn Stover Hydrolyzate for Xylitol Fermentation

The use of dilute acids to catalyze the hydrolysis of hemicellulose to its sugar constituents is well‐known and effective. However, a major problem associated with this pretreatment is the poor fermentability of the produced hydrolyzate as a result of the presence of the microorganismapos;s inhibito...

Full description

Saved in:
Bibliographic Details
Published in:Biotechnology progress 2003, Vol.19 (6), p.1837-1841
Main Authors: de Mancilha, Ismael Maciel, Karim, M. Nazmul
Format: Article
Language:English
Subjects:
Biological and medical sciences
Biotechnology
Candida - metabolism
Candida mogii
Cell Culture Techniques - methods
Culture Media - chemistry
Culture Media - metabolism
Fundamental and applied biological sciences. Psychology
Furaldehyde - analogs & derivatives
Furaldehyde - chemistry
Furaldehyde - isolation & purification
Hydrolysis
Ion Exchange Resins - chemistry
Plant Leaves - chemistry
Plant Leaves - microbiology
Plant Stems - chemistry
Plant Stems - microbiology
Xylitol - biosynthesis
Zea mays - chemistry
Zea mays - microbiology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The use of dilute acids to catalyze the hydrolysis of hemicellulose to its sugar constituents is well‐known and effective. However, a major problem associated with this pretreatment is the poor fermentability of the produced hydrolyzate as a result of the presence of the microorganismapos;s inhibitory compounds. In the present work, seven ion‐exchange resins were tested in order to detoxify corn stover hydrolyzate. Regarding xylose recovery, it was observed that more than 92% recovery was feasible. Furfural removal varied from 53.% to 99.%, and hydroxymethylfurfural (HMF) removal was effective between 37% and 100%. Acetic acid was totally removed by Purolite A 103 S resin. Corn stover hydrolyzate (CSH) treated with Purolite A 103 S, and Finex CS 14 GC resins, was tested as substrate for xylitol production using a yeast, Candida mogii. Product yields, Yp/s, of 0.41 and 0.37 g/g and cellular yields, Yx/s, of 0.24 and 0.13 g/g, respectively, were obtained using the two types of resin‐treated hydrolyzates.
ISSN:8756-7938
1520-6033
DOI:10.1021/bp034069x