International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 6, June 2017

International Journal of Science and Technology


Enhancing the Production of Reducing Sugars from Cassava Peels by Pretreatment Methods

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Author Olanbiwoninu.A.A, Odunfa S.A
On Pages 650-657
Volume No. 2
Issue No. 9
Issue Date September, 2012
Publishing Date September, 2012
Keywords Acid hydrolysis, Alkali hydrolysis, organosolv, Cassava peels, enzymatic hydrolysis, Pretreatment.


Abstract

Cassava peel is one of the major biomass wastes in Nigeria obtained from production of cassava tuber for human consumption, starch production and industrial uses. The objective of this work was to investigate the optimal condition for pretreating cassava peel with dilute sulphuric acid, methanol with catalyst (organosolv) and alkali prior to microbial enzymatic hydrolysis for the production of fermentable sugars. The pretreated samples reducing sugar yield was measured after enzymatic hydrolysis. The result shows that acid hydrolysis using sulphuric acid at a concentration of 0.1M at 120oC for 30 min gave a maximum reducing sugar yield of 88.8% and 98%, followed closely by methanol treated peels (78 and 98% ) while alkali pretreated peels produce the least (66 and 88%) for Pseudomonas flourescens and Aspergillus terreus respectively. In this study, H2SO4 and methanolysis treated peels prior to enzymatic hydrolysis had a greater capacity for hydrolyzing cassava peels than NaOH and also combination of pretreatments method with enzymatic treatment is an alternative to improve efficiency of reducing sugar production from cassava peel.

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