Enzymatic bioconversion of Kraft pulped and oxidative delignified sawdust from the Lagos Lagoon, Nigeria into fermentable sugars
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Date
2013
Authors
Ndukwe, N.A.
Okiei, W.O.
Alo, B.I.
van Wyk, J.P.H.
Mamabolo, T.M.
Igwe, C.C.
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Abstract
The major obstacle during pretreatment pf lignocellulosic biomass centers mostly on the insufficient separation of lignin from cellulose that could further be converted into bioenergy and other useful chemicals. The choice of an optimum biomass pretreatment process depends on the digestibility of lignocellulosic material, cost-effectiveness and overall impact on the environment. Kraft pulp samples from sawdust wastes obtained along the Lagos Lagoon in Nigeria were delignified with 30% hydrogen peroxide and successively saccharified with Trichoderma viride cellulase during different incubation periods. Oxidative delignification of all Kraft pulped sawdust samples resulted in an increased degree of bioconversion relative to the saccharification of Kraft pulped sawdust . The highest percentage increase in saccharification during bioconversion of delignified Kraft pulped sawdust relative to degradation of only Kraft pulped sawdust was as follows: Sawdust from R. heudelotil showed an increased of 727% after 30 min of degradation with 447% increase obtained from the same sawdust after an incubation period of 1 h. An increase of 323% was calculated for sawdust from E. suaveolens and l, asarlfolia during a degradation period of 3 h with a 238% increase in glucose production from M. excelsa sawdust after a 6 h period of cellulase treatment
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Research Subject Categories::NATURAL SCIENCES::Chemistry , Bioenergy , sawdust , Trichoderma viride cellulase , delignification , saccharification
Citation
Ndukwe, N. A., Okiei, W. O., Alo, B. I., van Wyk, J.P.H., Mamabolo, T. M., & Igwe, C. C. (2003). Enzymatic bioconversion of Kraft pulped and oxidative delignified sawdust from the Lagos Lagoon, Nigeria into fermentable sugars..