title: Characterisation and evaluation of a novel feedstock, Manihot glaziovii, Muell. Arg, for production of bioenergy carriers: Bioethanol and biogas.
abstract: The objective of this study was to characterise and evaluate a wild inedible cassava species, Manihot glaziovii as feedstock for bioenergy production. Tubers obtained from 3 different areas in Tanzania were characterised and evaluated for bioethanol and biogas production. These bioenergy carriers were produced both separately and sequentially and their energy values evaluated based on these two approaches. Composition analysis demonstrated that M. glaziovii is a suitable feedstock for both bioethanol and biogas production. Starch content ranged from 77% to 81%, structural carbohydrates 3-16%, total crude protein ranged from 2% to 8%. Yeast fermentation achieved ethanol concentration of up to 85g/L at a fermentation efficiency of 89%. The fuel energy of the bioethanol and methane from flour-peels mix ranged from 5 to 13 and 11 to 14MJ/kgVS, respectively. Co-production of bioethanol and biogas in which the peels were added to the fermentation residue prior to anaerobic digestion produced maximum fuel energy yield of (15-23MJ/kgVS).
authors.affiliation: Division of Biotechnology, Lund University, P.O. Box 124, SE-22100 Lund, Sweden; Department of Molecular Biology and Biotechnology, College of Natural and Applied Sciences, Uvumbuzi Road, Mwalimu J.K. Nyerere Mlimani Campus, University of Dar es Salaam, P.O. Box 35179, Dar es Salaam, Tanzania. Electronic address: ansemoshi@yahoo.co.uk.
authors.forename: Anselm P
authors.initials: AP
authors.lastname: Moshi
authors.affiliation: Division of Biotechnology, Lund University, P.O. Box 124, SE-22100 Lund, Sweden. Electronic address: carlacrespo123@gmail.com.
authors.forename: Carla F
authors.initials: CF
authors.lastname: Crespo
authors.affiliation: Division of Biotechnology, Lund University, P.O. Box 124, SE-22100 Lund, Sweden. Electronic address: malikbashah@gmail.com.
authors.forename: Malik
authors.initials: M
authors.lastname: Badshah
authors.affiliation: Department of Molecular Biology and Biotechnology, College of Natural and Applied Sciences, Uvumbuzi Road, Mwalimu J.K. Nyerere Mlimani Campus, University of Dar es Salaam, P.O. Box 35179, Dar es Salaam, Tanzania. Electronic address: kenhosea2@gmail.com.
authors.forename: Ken M M
authors.initials: KMM
authors.lastname: Hosea
authors.affiliation: Department of Molecular Biology and Biotechnology, College of Natural and Applied Sciences, Uvumbuzi Road, Mwalimu J.K. Nyerere Mlimani Campus, University of Dar es Salaam, P.O. Box 35179, Dar es Salaam, Tanzania. Electronic address: anthony.mshandete@yahoo.com.
authors.forename: Anthony Manoni
authors.initials: AM
authors.lastname: Mshandete
authors.affiliation: Department of Molecular Biology and Biotechnology, College of Natural and Applied Sciences, Uvumbuzi Road, Mwalimu J.K. Nyerere Mlimani Campus, University of Dar es Salaam, P.O. Box 35179, Dar es Salaam, Tanzania. Electronic address: elisante@udsm.ac.tz.
authors.forename: Emrode
authors.initials: E
authors.lastname: Elisante
authors.affiliation: Division of Biotechnology, Lund University, P.O. Box 124, SE-22100 Lund, Sweden. Electronic address: Bo.Mattiasson@biotek.lu.se.
authors.forename: Bo
authors.initials: B
authors.lastname: Mattiasson
mesh_terms: D000693:Anaerobiosis; D061249:Batch Cell Culture Techniques; D056804:Biofuels; D001709:Biotechnology / Q000379:methods*; D002482:Cellulose / Q000032:analysis; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D005433:Flour / Q000032:analysis; D005740:Gases / Q000378:metabolism*; D008031:Lignin / Q000032:analysis; D002365:Manihot / Q000378:metabolism*; D008697:Methane / Q000032:analysis; D010641:Phenotype; D035281:Plant Tubers / Q000378:metabolism; D011134:Polysaccharides / Q000032:analysis; D013636:Tanzania
chemical_list: D056804:Biofuels; D005740:Gases; D011134:Polysaccharides; D000431:Ethanol; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin; D008697:Methane
keywords: Bioenergy; Bioethanol; Cassava; Manihot glaziovii; Methane