Bio-Ethanol Production from Non-Food Parts of Cassava (Manihot esculenta Crantz)
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Global climate issues and a looming energy crisis put agriculture under pressure in Sub-Saharan Africa. Climate adaptation measures must entail sustainable development benefits, and growing crops for food as well as energy may be a solution, removing people from hunger and poverty without compromising the environment. The present study investigated the feasibility of using non-food parts of cassava for energy production and the promising results revealed that at least 28% of peels and stems comprise dry matter, and 10 g feedstock yields >8.5 g sugar, which in turn produced >60% ethanol, with pH ≈ 2.85, 74–84% light transmittance and a conductivity of 368 mV, indicating a potential use of cassava feedstock for ethanol production. Thus, harnessing cassava for food as well as ethanol production is deemed feasible. Such a system would, however, require supportive policies to acquire a balance between food security and fuel.
KeywordsCassava feedstock Food security Energy production Bio-ethanol
The present study was financed by SIDA through the BIO-EARN program. We thank Dr Anton Bua of the Cassava Program, National Crops Resources Research Institute (NaCRRI) for providing the test material and associated logistics. The assistance of members of the NaCRRI biosciences laboratory, especially the biochemistry section, is gratefully acknowledged.
- Adesanya, O., K. Oluyemi, S. Josiah, R. Adesanya, L. Shittu, D. Ofusori, M. Bankole, and G. Babalola. 2008. Ethanol production by Saccharomyces Cerevisiae from Cassava Peel Hydrolysate. Internet Journal of Microbiology 5: 1.Google Scholar
- Ahamefule, F.O. 2005. Evaluation of pigeon pea-cassava peel based diets for goat production in South-Eastern Nigeria. Ph.D. Thesis, Michael Okpara University of Agriculture, Umudike.Google Scholar
- Ballesteros, I., J.M. Oliva, A. Navarro, J. Carrasco, and M. Ballesteros. 2000. Effect of chip size on steam explosion pretreatment of softwood. Applied Biochemistry and Biotechnology 84–86: 97–110.Google Scholar
- Boonnop, K., M. Wanapat, N. Nontaso, and S. Wanapat. 2009. Enriching nutritive value of cassava root by yeast fermentation. Scientia Agricola (Piracicaba, Braz.) 66: 616–620.Google Scholar
- Brauman, A.S., S. Ke′le′ke, M. Malonga, E. Miambi, and F. Ampe. 1996. Microbiological and biochemical characterization of Cassava Retting a traditional lactic acid fermentation for Foo–Foo (Cassava flour). Production Applied and Environmental Microbiology 62: 2854–2858.Google Scholar
- Chandel, A., E. Chan, R. Rudravaram, L. Narasu, V. Rao, and P. Ravindra. 2007. Economics and environmental impact of bio-ethanol production technologies: An appraisal. Biotechnology and Molecular Biology Review 2(1): 014–032.Google Scholar
- de Oliveira, M.F., A.A. Saczk, L.L. Okumura, and N.R. Stradiotto. 2009. Analytical methods employed at quality control of fuel ethanol. Energy Fuels 23: 4852–4859.Google Scholar
- Dubois, M., K. Gilles, K. Hamilton, A. Rebers, and F. Smith. 1956. Colorimetric method for determination of sugars and related substances. Analytical Chemistry 28: 350–356.Google Scholar
- Fabro, M.A., H.V. Milanesio, L.M. Robert, J.L. Speranza, M. Murphy, G. Rodríguez, and R. Castañeda. 2006. Determination of acidity in whole raw milk. Journal of Dairy Science 89: 859–861.Google Scholar
- FAO. 2005–2008. FAOSTAT statistics database-agriculture production statistics. Rome, Italy: FAO. http://faostat.fao.org. Retrieved 25 June 2010.
- Guo, A., B. Webb, M. Miles, M. Zimmerman, K. Kendler, and Z. Zhao. 2008. ERGR: An ethanol related gene resource. Nucleic Acid Research 37(1): D840–D845.Google Scholar
- Hayes, F.W. (1982). Production of ethanol from sugar cane (435/161 ed.). England. http://www.freepatentsonline.com/4326036.html. Retrieved 4 Oct 2011.
- Marshall, L., and Z. Sugg. 2009. Corn stover for ethanol production, WRI policy notes, January 2009. No. 4: 1–10. www.csbp.org.
- Nuwamanya, E., Y. Baguma, N. Emmambux, J. Taylor, and P. Rubaihayo. 2010. Physicochemical and functional characteristics of cassava starch in Ugandan varieties and their progenies. Journal of Plant Breeding and Crop Science 2: 001–011.Google Scholar
- Pattiya, A., J. Titiloye, and A. Bridgewater. 2007. Fast pyrolysis of agricultural residues from cassava plantations for bio-oil production. Asian Journal on Energy and Environment 08: 496–502.Google Scholar
- Rist, L., J. Ser, H. Lee, and L. Pin Koh. 2009. Biofuels: Social benefits. Science 326: 1344-a.Google Scholar
- Sassner, P., M. Galbe, and G. Zacchi. 2006. Bioethanol production based on simultaneous saccharification and fermentation of steam-pretreated Salix at high dry-matter content. Enzyme and Microbial Technology 39: 756–762.Google Scholar
- Tillman, D., R. Socolow, J.A. Foley, D. Hill, E. Larson, L. Lynd, S. Pacala, J. Reilly, T. Searchinger, C. Somerville, and R. Williams. 2009. Beneficial biofuels, the food, energy and environment trilemma. Science 325: 270–271.Google Scholar
- Toran-Diaz, I., V.K. Jain, J.-J. Allais, and J. Baratti. 2009. Effect of acid or enzymatic hydrolysis on ethanol production by Zymomonas mobilis growing on Jerusalem artichoke juice. Biotechnology Letters 17: 527–530.Google Scholar
- Van Hoek, P., J. Van Dijken, and J. Pronk. 1998. Effect of specific growth rate on fermentative capacity of baker’s yeast. Applied Environmental Microbiology 64: 4226–4233.Google Scholar
- Yoonan, K., and J. Kongkiattikajorn. 2005. A study of optimal conditions for reducing sugars production from cassava peels by diluted acid and enzymes. Kasetsart Journal of Natural Science 38: 29–35.Google Scholar
- Yu, J., X. Zhang, and T. Tan. 2007. A novel immobilization method of Saccharomyces cerevisiae to sorghum bagasse for ethanol production. Journal of Biotechnology 129: 415–420.Google Scholar