Impact of deficit irrigation on sorghum physical and chemical properties and ethanol yield

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dc.contributor.author Liu, Liman
dc.contributor.author Maier, Anne
dc.contributor.author Klocke, Norman L.
dc.contributor.author Yan, Shuping
dc.contributor.author Rogers, Danny H.
dc.contributor.author Tesso, Tesfaye T.
dc.contributor.author Wang, Donghai
dc.date.accessioned 2014-01-10T17:07:59Z
dc.date.available 2014-01-10T17:07:59Z
dc.date.issued 2014-01-10
dc.identifier.uri http://hdl.handle.net/2097/17040
dc.description.abstract The objective of this research was to study the effect of irrigation levels (five levels from 304.8 to 76.2 mm water) on the physical and chemical properties and ethanol fermentation performance of sorghum. Ten sorghum samples grown under semi-arid climatic conditions were harvested in 2011 from the Kansas State University Southwest Research-Extension Center near Garden City, Kansas, and evaluated. Irrigation had a significant effect on the physical properties, chemical composition, ethanol yield, and fermentation efficiency of sorghum. Sorghum kernel hardness increased and test weight decreased as the irrigation level decreased. Starch contents of sorghum samples grown under a low irrigation level were approximately 7% less than those grown under a high irrigation level. Protein contents ranged from 9.84% to 14.91% and increased as irrigation level decreased. Starch pasting temperature increased significantly, and starch peak pasting viscosity and setback viscosity decreased as the irrigation level decreased. Free amino nitrogen (FAN) increased significantly as irrigation decreased. Ethanol fermentation efficiency ranged from 90.6% to 91.9% and correlated positively with FAN during the first 30 h of fermentation (R² = 0.926). Deficit irrigation level had a negative impact on ethanol yield. The sorghum with low irrigation yielded about 8.9% less ethanol (434.52 mL ethanol per kg sorghum) than samples with higher irrigation (473.32 mL ethanol per kg sorghum). Residual starch contents in the distillers dried grains with solubles was less than 1% and ranged from 0.70% to 0.84%. en_US
dc.language.iso en_US en_US
dc.relation.uri http://elibrary.asabe.org/azdez.asp?JID=3&AID=43958&CID=t2013&v=56&i=4&T=1&redirType= en_US
dc.rights © 2013 American Society of Agricultural and Biological Engineers en_US
dc.subject Composition en_US
dc.subject Ethanol yield en_US
dc.subject Irrigation en_US
dc.subject Physical properties en_US
dc.subject Sorghum en_US
dc.title Impact of deficit irrigation on sorghum physical and chemical properties and ethanol yield en_US
dc.type Article (publisher version) en_US
dc.date.published 2013 en_US
dc.citation.doi doi:10.13031/trans.56.10153 en_US
dc.citation.epage 1549 en_US
dc.citation.issue 4 en_US
dc.citation.jtitle Transactions of the ASABE en_US
dc.citation.spage 1541 en_US
dc.citation.volume 56 en_US
dc.contributor.authoreid liman en_US
dc.contributor.authoreid nklocke en_US
dc.contributor.authoreid drogers en_US
dc.contributor.authoreid ttesso en_US
dc.contributor.authoreid dwang en_US


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