Comparison of physicochemical pretreatments of banana peels for bioethanol production
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Pretreatments with different concentrations of sulfuric acid (0, 0.5, and 1% v/v) and temperatures (28 and 121 °C at 103 kPa in an autoclave) were performed on banana peels (BP) milled by mechanical grinding and grinding in a blender as well as without grinding. Cellulose, hemicellulose, lignin, ash, and total and reducing sugar contents were evaluated. The highest yields of cellulose enzymatic hydrolysis (99%) were achieved with liquefied autoclaved BP treated with 0.5 and 1% acid after 48 h of hydrolysis. Ethanol production by Kluyveromyces marxianus fermentation was assayed using hydrolyzed BP at 10, 15, and 20% (w/w). The highest ethanol level (21 g/L) was reached after 24 h of fermentation with 20% (w/w) BP. Kinetics of the consumption of reducing sugars under this fermentation condition demonstrates the presence of a lag period (about 8 h). Thus, BP are a good source for ethanol production.
KeywordsBanana peel Physicochemical pretreatment Enzymatic hydrolysis Ethanol production
Authors would thank to the Mexican National Council of Science and Technology (CONACYT) for the financial support of the project PDCPN 2013-01-213844, Ph.D. scholarship, and for the financial support under the program “Cátedras-CONACyT” (Researcher No. 2498).
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Conflict of interest
All authors declare that they have no conflict of interest.
- 2.Palacios-Ponce S, Ilyina A, Ramos-González R, Ruiz HA, Martínez-Hernández JL, Segura-Ceniceros EP, Aguilar MA, Sánchez O, Aguilar CN. Bioproducts obtained from the bioprocessing of the banana peel waste: an Overview. In: Applied Chemistry and Chemical Engineering. Vol. 5. Research Methodologies in Modern Chemistry and Applied Science. Part II - 10. Eds: Haghi AK, Faria Ribeiro AC, Pogliani L, Balköse D, Francisco Torrens F, Omari V, Mukbaniani OV. CRC Press. Taylor and Francis Group. India. (2017) (in Press)Google Scholar
- 3.Nagarajaiah SB, Prakash J. Chemical composition and antioxidant potential of peels from three varieties of banana. As. J. Food Ag-Ind. 4: 31–46 (2011)Google Scholar
- 6.Dhabekar A, Chandak A. Utilization of banana peels and beet waste for alcohol production. Asiatic. J. Biotechnol. Res. 1: 8–13 (2010)Google Scholar
- 8.Ilori MO, Adebusoye SA, Iawal AK, Awotiwon OA. Production of biogas from banana and plantain peels. Adv. Environ. Biol. 1: 33–38 (2007)Google Scholar
- 12.Ovando-Chacó SL, Waliszewski KN. Commercial cellulases preparations and their applications in extractives processes. Universidad y Ciencia 21: 111–120 (2005)Google Scholar
- 14.Badui DS. Hidratos de carbono. 107-113. In: Química de los alimentos. Ed: Duarte EQ. Cuarta Edición. Pearson Educación. México (2006)Google Scholar
- 16.Itelima J, Onwuliri E, I. O, Oforji S. Bio-Ethanol Production from Banana, Plantain and Pineapple Peels by Simultaneous Saccharification and Fermentation Process. Int. J. Environ. Sci. Dev. 4 (2): 213–216 (2013)Google Scholar
- 30.Cortés-Arganda JF, Ramos-González R, Segura-Ceniceros EP, Martínez-Hernández JL, Rutiaga Quiñones OM, Iliná A. Screening of Kluyveromyces marxianus strains for ethanol production. II435. In: IAFP’s 5th Latin American Symposium in Food Safety, 7th Food Science, Biotechnology and Safety Meeting. November 9–11, Convention Center, Cancún. Mexico (2016)Google Scholar
- 31.Zhang Q, Wu D, Lin Y, Wang X, Kong H, Tanaka S. Substrate and product inhibition on yeast performance in ethanol fermentation. Energy Fuels 29: 1019–1027 (2015)Google Scholar