Development of Highly Digestible Grain Sorghum Lines Suitable for Efficient Dry-Grind Ethanol Production
- 1 iBio CDMO, Inc., Bryan, Texas, USA
- 2 Biological and Agricultural Engineering Department, Texas AM University, College Station, Texas, USA
Abstract
Low-world oil prices but supportive government policies provide growing environmental and energy security support favorable for the bioethanol market. The need to generate large and sustainable supply of biomass to make bioethanol will require the development of crops grown specifically for bioenergy production. Given the existing history of genetic improvement and infrastructure available for sorghum, ( <i> Sorghum bicolor </i> L. Moench) hybrids will be one of the several species dedicated as energy crop and the subject of this study. Texas A & M University Sorghum Breeding Program has developed hybrid sorghum varieties with high protein digestibility and improved starch digestibility. Most of the previous research on grain sorghum focused on the digestibility of sorghum protein from the nutritional point of view. The aim of the current study was to select best sorghum lines from relatively large and diverse sorghum samples that breeders are currently working with for the development of new low energy input liquefaction, saccharification and fermentation methodologies to produce bioethanol. Limited researches studies report on the performance of sorghum varieties in ethanol fermentation in relation to the protein and starch digestibility of sorghum.
- Mohammadi, S., Rabani, H. and Honarmand, S.J. (2015) The Effect of Bioethanol on Pollutants and Engine Fuel Consumption. Research Journal of Fisheries and Hydrobiology, 10, 234-244.
- Energy Efficiency and Renewable Energy (EERE) (2016) Bioenergy Multi-Year Program. US Department of Energy (USDOE), Washington DC. https://www.energy.gov/sites/prod/files/2016/07/f33/mypp_march2016.pdf
- Capareda, S.C. (2014) Introduction to Biomass Energy Conversions. CRC Press, Taylor and Francis Group, Boca Raton. https://doi.org/10.1201/b15089
- Nichols, N.N., Monceaux, D.A., Dien, B.S. and Bothast, R.J. (2008) Production of Ethanol from Corn and Sugarcane. In: Bioenergy, ASM Press, Washington DC, 3-15. https://doi.org/10.1128/9781555815547.ch1
- US Renewable Fuel Association (RFA) (2008) Changing the Climate: Ethanol Industry Outlook 2008. https://ethanolrfa.org/wp-content/uploads/2015/09/RFA_Outlook_2008.pdf
- Naidu, K., Singh, V., Johnston, D.B., Rausch, K.D. and Tumbleson, M.E. (2007) Effects of Ground Corn Particle Size on Ethanol Yield and Thin Stillage. Cereal Chemistry, 84, 6-9. https://doi.org/10.1094/CCHEM-84-1-0006
- Singh, V., Batie, C.J., Aux, G.W., Rausch, K.D. and Miller, C. (2006) Dry-Grind Processing of Corn with Endogenous Liquefaction Enzymes. Cereal Chemistry, 83, 317-320. https://doi.org/10.1094/CC-83-0317
- Smith, R. (2008) Planting Date: Critical Decision in Grain Sorghum Yield Potential. Southwest Farm Press, New Mexico. http://southwestfarmpress.com
- Sullivan, P. (2003) Conservation Tillage. Appropriate Technology Transfer for Rural Area Publication # CT105. http://www.nysenvirothon.org/wp-content/uploads/2019event_conservationtillage.pdf
- Hoseney, R.C. (1994) Principles of Cereal Science and Technology. In: Structure of Cereals, 2nd Edition, American Association of Cereal Chemists, St. Paul, 327 p.
- Kulp, K. and Ponte, J.G. (2000) Handbook of Cereal Science and Technology. 2nd Edition, Marcel Dekker Inc., New York.
- Zhan, X., Wang, D., Sun, X.S., Kim, S. and Fung, D.Y.C. (2003) Lactic acid Production Using Extrusion-Cooked Grain Sorghum. Transactions of the ASAE, 46, 589-593. https://doi.org/10.13031/2013.12914
- Duodu, K.G., Taylor, J.R.N., Belton, P.S. and Hamaker, B.R. (2003) Factors Affecting Sorghum Protein Digestibility. Journal of Cereal Science, 38, 117-131. https://doi.org/10.1016/S0733-5210(03)00016-X