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Effect of Hydrolysis Reaction Time on the Reducing Sugar Yield of Acha (Digitaria exilis) and Finger Millet (Eleusine coracana) Starch for Bioethanol Production

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1TitleTitle of DocumentEffect of Hydrolysis Reaction Time on the Reducing Sugar Yield of Acha (Digitaria exilis) and Finger Millet (Eleusine coracana) Starch for Bioethanol Production
2CreatorAuthor's name, affiliation, country A U. OFOEFULE1*, U C. OKORO2 and O D. ONUKWULI3
1Biomass Unit, National Center for Energy Research and Development, University of Nigeria, Nsukka, Enugu state 2Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, Enugu state 3Department of Chemical Engineering, Nnamdi Azikiwe University, Awka, Anambara state, Nigeria
3SubjectDicipline(s) Chemical Science
3SubjectKeywords Hydrolysis reaction time, Enzyme concentration, Reducing sugar yield, Bioethanol production, Finger millet, Acha
4DescriptionAbstract The effect of hydrolysis reaction time on the reducing sugar yield of Acha (Digitaria exilis) and Finger millet (Eleusine coracana) starch for bioethanol production was studied. The starches were extracted from the feedstocks by wet and dry milling methods. They were gelatinized at slurry concentrations of 2.0, 2.5, 3.0 and 3.5 mL/g for Acha and slurry concentrations of 2.5, 3.0, 3.5 and 4.0 mL/g for finger millet. They were then hydrolyzed using malted barley as enzyme at enzyme concentrations of 0.1g/g to 0.3g/g at durations ranging from 1 - 3 h. The results showed that for the two starches studied, none achieved highest reducing sugar yield at 1 - 2 h. The optimum fell largely between 3 to 3 h. Overall results indicate that reducing sugar quantity is largely dependent on slurry concentration (mL/g) of starch, hydrolysis reaction time and even temperature.
5PublishersOrganizing agency, location WWW Publications, India
6Contributor Sponsor(s) -
7DateDate (YYYY-MM-DD) -
8TypeStatus & genre Peer-reviewed Article
8TypeType
9FormateFile Formate PDF
10IdentifierUniform Resource Identifier Click Here
10IdentifierDigital Object Identifier DOI:10.7598/cst2015.986
11SourceJournal/conference title; vol., no. (Year)Chemical Science Transactions, Volume  4 , Number  (2), (2015)
12LanuguageEnglish=en en
13RelationSupp.files
14Coverage -
15CopyrightCopyright and permissions
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