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

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dc.contributor.author Liu, Liman
dc.contributor.author Klocke, Norman L.
dc.contributor.author Yan, Shuping
dc.contributor.author Rogers, Danny H.
dc.contributor.author Schlegel, Alan J.
dc.contributor.author Lamm, Freddie R.
dc.contributor.author Chang, Shing I.
dc.contributor.author Wang, Donghai
dc.date.accessioned 2014-02-26T21:46:55Z
dc.date.available 2014-02-26T21:46:55Z
dc.date.issued 2014-02-26
dc.identifier.uri http://hdl.handle.net/2097/17190
dc.description.abstract The objective of this research was to study the effect of irrigation levels (five levels from 102 to 457 mm of water) on the physical and chemical properties and ethanol fermentation performance of maize. Twenty maize samples with two crop rotation systems, grain sorghum–maize and maize–maize, were harvested in 2011 and evaluated at the Kansas State University Southwest Research-Extension Center near Garden City, Kansas, under a semiarid climate. Results showed that maize kernel weight, density, and breakage susceptibility decreased as irrigation level decreased. Starch contents of maize samples grown under a low irrigation level were approximately 3.0% lower than those under a high irrigation level. Protein contents ranged from 9.24 to 11.30% and increased as irrigation level decreased. Maize flour thermal and rheological properties were analyzed by differential scanning calorimetry and the Micro Visco-Amylo-Graph-U device. Starch gelatinization temperature increased significantly as irrigation level decreased, whereas starch pasting viscosity decreased as irrigation level decreased. Free amino nitrogen (FAN) was significantly affected by irrigation level: it increased as irrigation decreased. Ethanol fermentation efficiency ranged from 90.96 to 92.48% and was positively correlated with FAN during the first 32 h of fermentation (r² = 0.645). Deficit irrigation had a negative impact on ethanol yield. The maize with lower irrigation yielded about 4.0% less ethanol (44.14 mL/100 g of maize) than maize with high irrigation (45.92 mL/100 g of maize). Residual starch contents in the distillers dried grains with solubles were in a range of 0.80–1.02%. In conclusion, deficit irrigation had a significant effect on physical properties, chemical composition, ethanol yield, and fermentation efficiency of maize. en_US
dc.language.iso en_US en_US
dc.relation.uri http://cerealchemistry.aaccnet.org/doi/abs/10.1094/CCHEM-07-12-0079-R en_US
dc.rights Permission to archive granted by AACC International, January 22, 2014. en_US
dc.subject Deficit irrigation en_US
dc.subject Maize en_US
dc.subject Ethanol yield en_US
dc.title Impact of deficit irrigation on maize 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:10.1094/CCHEM-07-12-0079-R en_US
dc.citation.epage 462 en_US
dc.citation.issue 5 en_US
dc.citation.jtitle Cereal Chemistry en_US
dc.citation.spage 453 en_US
dc.citation.volume 90 en_US
dc.contributor.authoreid drogers en_US
dc.contributor.authoreid schlegel en_US
dc.contributor.authoreid flamm en_US
dc.contributor.authoreid changs en_US
dc.contributor.authoreid dwang en_US


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