0507SweetSorghumJuiceEthanolsr.cfm Sorghum Checkoff conducts ethanol trial
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Sorghum Checkoff conducts ethanol trial

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The Sorghum Checkoff in collaboration with the NCERC at Southern Illinois University Edwardsville (formerly the National Corn-to-Ethanol Research Center) announced a successful bench-scale evaluation of sweet sorghum juice sugars with corn mash for the production of fuel ethanol. This study expands upon a commercial-scale trial that was conducted in Hopkinsville, Ky., in late 2012 by Commonwealth Agri-Energy LLC, Delta BioRenewables LLC, Ceres Inc. and the Sorghum Checkoff.

The bench-scale study yielded critical data on the production of ethanol from a combination of the two feedstocks by evaluating fermentation performance at different levels of sweet sorghum juice inclusion in corn mash. The sugar juice was successfully used as a replacement for process water, demonstrating the potential for a corn ethanol plant to increase production above nameplate capacity by incorporating sweet sorghum juice sugars.

“This analysis was extremely successful at the lab scale, and suggests that sweet sorghum juice inclusion could increase the throughput of existing corn ethanol facilities. In addition to increased yields, sorghum juice inclusion may reduce enzyme and nutrient usage per gallon of ethanol produced. Sweet sorghum juice sugar can also help ethanol producers diversify their feedstocks and serve as a bridge to the next generation of biofuels,” said Sabrina Trupia, NCERC assistant director of research.

John Duff, Sorghum Checkoff renewables program director, says the success of the trial is validation sweet sorghum juice sugars are fully compatible and maybe even synergistic with corn mash in ethanol production.

“Before a corn ethanol plant will take a step toward that next generation it must be confident in its ability to do so successfully,” Duff said. “We think this study will help provide that assurance and support the commercialization of sweet sorghum as a new industrial sugar feedstock crop across the broad geographic area of the country where it can be grown.”

The Sorghum Checkoff and NCERC recognize Delta BioRenewables and Commonwealth Agri-Energy for their input into the study’s experimental design. Delta BioRenewables provided the sweet sorghum juice used in the study.

Date: 5/27/2013



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