Effects of cell-wall acetate, xylan backbone, and lignin on enzymatic hydrolysis of aspen wood View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1992-03

AUTHORS

Fanran Kong, Cady R. Engler, Ed J. Soltes

ABSTRACT

Aspen wood substrates with varying degrees of deacetylation, xylan, and lignin removal have been prepared and submitted to enzymatic hydrolysis with a cellulase/hemicellulase preparation for an extended constant period of hydrolysis. Controlled deacetylation has been achieved by treating wood with various alkali metal hydroxide solutions, at various alkali/wood ratios. It has been found that samples with the same extent of deacetylation produce the same sugar yields upon enzymatic hydrolysis. Increased degree of deacetylation increases the yield of sugars obtained from enzymatic hydrolysis, all other compositional parameters held constant. The acetyl group removal is proportional to the stoichiometric relation between added base and wood acetyl content, i.e., the same number of milliequivalents of base/weight of wood remove the same extent of acetyl groups, regardless of the concentration of the base solution. No cation effects are found among Li, Na, and K alkali hydroxide solutions, suggesting that swelling is not as important a parameter as is the removal of the acetyl groups from the xylan backbone in determining the extent of hydrolyzability of the resulting sample. More... »

PAGES

23-35

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02920531

DOI

http://dx.doi.org/10.1007/bf02920531

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1040936358


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