Journal
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
Volume 17, Issue 5, Pages 813-822Publisher
SPRINGER
DOI: 10.1007/s10450-011-9340-8
Keywords
Lignocelluloses; Tween 20; Cellulase; beta-glucosidase
Categories
Funding
- JST/JICA
- SATREPS
- Sustainable Integration of Local Agriculture and Biomass Industries
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In this work, we examined the role of a non-ionic surfactant, Tween 20, on enzymatic hydrolysis of lignocelluloses. Delignified lignocelluloses (pine wood chip) were used as model substrates. Effects of Tween 20 on adsorption/desorption onto/from lignocelluloses with and without hydrolysis were evaluated respectively. Tween 20 lowered the non-biospecific adsorption of beta-glucosidase and enhanced the bio-specific adsorption of cellulase. Tween 20 did not affect the liquid phase reaction (cellobiose hydrolysis). However, for the solid surface reaction (cellulose hydrolysis), cellulose conversion for 72 hrs was increased 9-21% and 1-8.5% for samples with high lignin contents (PI) and low lignin contents (PIII) by injection of Tween 20 (0.024-0.24 mM), respectively. Moreover, Tween 20 increased the cellulose conversion rate substantially. It is suggested that the increase of cellulase amount adsorbed due to the increase of effective cellulose surface by Tween 20 contribute to the enhancement of cellulose conversion.
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