title: Potential of bioethanol production from olive mill solid wastes.
abstract: The main objective of this study was to screen endogenous microorganisms grown on olive mill solid wastes (OMSW) with the potential to ferment pentoses and produce ethanol. Two yeasts were isolated and identified as Issatchenkia orientalis, and Pichia galeiformis/manshurica. The adaptation of the strains displayed a positive impact on the fermentation process. In terms of xylose utilization and ethanol production, all strains were able to utilize xylose and produce xylitol but no ethanol was detected. Separate hydrolysis and fermentation process on hydrolysate undergo detoxification, strain I. orientalis showed the best efficiency in producing of ethanol when supplemented with glucose. Using simultaneous saccharification and fermentation process following pretreatment of OMSW, the average ethanol yield was 3 g/100 g dry OMSW. Bioethanol production from OMSW is not economic despite the raw material is cheap.
authors.affiliation: Institute of Applied Research, Affiliated with University of Haifa, The Galilee Society, P.O. Box 437, Shefa-Amr 20200, Israel. Electronic address: hebaabutayeh@yahoo.com.
authors.forename: Hiba
authors.initials: H
authors.lastname: Abu Tayeh
authors.affiliation: Institute of Applied Research, Affiliated with University of Haifa, The Galilee Society, P.O. Box 437, Shefa-Amr 20200, Israel; The Academic Arab College of Education, Haifa, Israel. Electronic address: najamina@gmail.com.
authors.forename: Naim
authors.initials: N
authors.lastname: Najami
authors.affiliation: Department of Environments, Water & Agriculture Engineering, Technion Institute, Haifa 32000, Israel. Electronic address: carlosd@tx.technion.ac.il.
authors.forename: Carlos
authors.initials: C
authors.lastname: Dosoretz
authors.affiliation: Institute of Applied Research, Affiliated with University of Haifa, The Galilee Society, P.O. Box 437, Shefa-Amr 20200, Israel. Electronic address: a_tafesh@yahoo.com.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Tafesh
authors.affiliation: Institute of Applied Research, Affiliated with University of Haifa, The Galilee Society, P.O. Box 437, Shefa-Amr 20200, Israel; Tel Hai College, Upper Galilee 12208, Israel. Electronic address: hazaizeh@yahoo.com.
authors.forename: Hassan
authors.initials: H
authors.lastname: Azaizeh
mesh_terms: D056804:Biofuels; D050260:Carbohydrate Metabolism / Q000187:drug effects; D002480:Cellulase / Q000378:metabolism; D002606:Charcoal / Q000494:pharmacology; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation / Q000187:drug effects; D005947:Glucose / Q000378:metabolism; D006868:Hydrolysis / Q000187:drug effects; D007220:Industrial Waste; D031658:Olea / Q000737:chemistry* / Q000187:drug effects; D062611:Solid Waste; D013464:Sulfuric Acids / Q000494:pharmacology; D014994:Xylose / Q000378:metabolism; D015003:Yeasts / Q000187:drug effects / Q000378:metabolism; D001617:beta-Glucosidase / Q000378:metabolism
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D062611:Solid Waste; D013464:Sulfuric Acids; D002606:Charcoal; D000431:Ethanol; D014994:Xylose; D001617:beta-Glucosidase; D002480:Cellulase; D005947:Glucose; C033158:sulfuric acid
keywords: Bioethanol production; Fermentation process; Lignocellulose degradation; Olive mill solid wastes