Abul Kalam Azad^*, Nilufa Yesmin, Shanjit Kumar Sarker, Abdus Sattar, Rezaul Karim

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Institute of Environmental Science, Rajshahi University, Rajshahi, Bangladesh.
Institute of Food Science & Technology, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh.
Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi, Bangladesh.
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Abstract: Bangladesh produces a huge amount of potatoes every year. This research was carried out to find the optimum conditions for bioethanol production from potato of Bangladesh. From this study, optimum growth of yeast (Saccharomyces cerevisiae CCD) was observed at pH 6.0 and temperature 31°C. Addition of a small amount of alpha-amylase enzyme to potato solution was found to enhance the potato starch degradation and made the fermentation process quicker. This study observed that 1750 unit alpha-amylase is enough to degrade the starch in 15% of 500 ml potato starch solution. From fermentation time study, 6-day incubation time was found to be enough to complete the fermentation process and optimum production of bioethanol form potato starch. Suitable concentration of potato in fermentation process was determined using five different potato solutions (5%, 10%, 15%, 20% and 30%). A highest production of bioethanol was found in  20% potato treatment. Therefore, 20% potato solution is recommended for high-scale production of bioethanol from potato starch.

Keywords: Potato, Bio-Ethanol, Fermentation, Alpha-Amylase

Cite this paper: Azad, A. , Yesmin, N. , Sarker, S. , Sattar, A. and Karim, R. (2014) Optimum Conditions for Bioethanol Production from Potato of Bangladesh. Advances in Bioscience and Biotechnology, 5, 501-507. doi: 10.4236/abb.2014.56060.

References

[1]   Quintero, J.A., Montoya, M.I., Sanchez, O.J., Giraldo, O.H. and Cardona C.A. (2008) Fuel Ethanol Production from Sugarcane and Corn: Comparative Analysis for a Colombian Case. Energy, 33, 385-399.
http://dx.doi.org/10.1016/j.energy.2007.10.001

[2]   Grassi, G. (1999) Modern Bioenergy in the European Union. Renewable Energy, 16, 985-990.
http://dx.doi.org/10.1016/S0960-1481(98)00347-4

[3]   Wheals, A.E., Basso, L.C., Alves, D.M.G. and Amorim, H.V. (1999) Fuel Ethanol after 25 Years. Trends in Biotechnology, 17, 482-487. http://dx.doi.org/10.1016/S0167-7799(99)01384-0

[4]   Ferguson, A.R.B. (2008) The Power Density of Ethanol from Brazilian Sugarcane. In: Biofuels, Solar and Wind as Renewable Energy Systems: Benefits and Risks, Springer, Dordrecht, 493-498.
http://dx.doi.org/10.1007/978-1-4020-8654-0_19

[5]   Worldwatch Institute (2007) Biofuels for Transportation: Global Potential and Implications for Sustainable Agriculture and Energy in the 21st Century. Worldwatch Institute, Washington DC.

[6]   Rutz, D. and Janssen, R. (2007) Biofuel Technology Handbook. WIP Renewable Energies, Munich.

[7]   Liimatainen, H., Kuokhanen, T. and Kaariainen, J. (2004) Development of Bio-Ethanol Production from Waste Potatoes. Proceedings of the Conference of Waste Minimization and Resources Use Optimization, Oulu, 10 June 2004, 123-129.

[8]   Milken, J., Josec, F., Wang, M. and Yuzugullu, E. (2007) The Advanced Energy Initiative. Journal of Power Sources, 172, 121-131. http://dx.doi.org/10.1016/j.jpowsour.2007.05.030

[9]   Khan, R.A., Nawaz, A., Ahmed, M., Khan, M.R., Dian, F., Azam, N., Ullah, S., Sadullah, F., Ahmad, A., Shah, M.S. and Khan, N. (2012) Production of Bioethanol through Enzymatic Hydrolysis of Potato. African Journal of Biotechnology, 11, 6739-6743.

[10]   Taherzadeh, M.J. and Karimi, K. (2007) Acid-Based Hydrolysis Processes for Ethanol from Lignocellulosic Materials: A Review. BioResources, 2, 472-499.

[11]   Balat, M. (2011) Production of Bioethanol from Lignocellulosic Materials via the Biochemical Pathway: A Review. Energy Conversion and Management, 52, 858-875.
http://dx.doi.org/10.1016/j.enconman.2010.08.013

[12]   Lehninger, A.L. (1978) Biochemistry. 2nd Edition, Worth Publishers, Inc., New York, 234-245.