Extrudability and Consolidation of Blends between CGM and DDGS

dc.contributor.author Verbeek, C.
dc.contributor.author Rosentrater, Kurt
dc.contributor.author Rosentrater, Kurt
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-18T09:37:16.000
dc.date.accessioned 2020-06-29T22:42:44Z
dc.date.available 2020-06-29T22:42:44Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.issued 2016-01-01
dc.description.abstract <p>During the last decade, the global biofuels industry has experienced exponential growth. By-products such as high protein corn gluten meal (CGM) and high fibre distillers dried grains with solubles (DDGS) have grown in parallel. CGM has been shown to be suitable as a biopolymer; the high fibre content of DDGS reduces its effectiveness, although it is considerably cheaper. In this study, the processing behaviour of CGM and DDGS blends was evaluated and resulting extrudate properties were determined. Prior to processing, urea was used as a denaturant. DDGS : CGM ratios of 0, 33, 50, 66, and 100% were processed in a single screw extruder, which solely used dissipative heating. Blends containing DDGS were less uniformly consolidated and resulted in more dissipative heating. Blends showed multiple glass transitions, which is characteristic of mechanically compatible blends. Transmission electron microscopy revealed phase separation on a microscale, although distinct CGM or DDGS phases could not be identified. On a macroscale, optical microscopy suggested that CGM-rich blends were better consolidated, supported by visual observations of a more continuous extrudate formed during extrusion. Future work should aim to also characterize the mechanical properties of these blends to assess their suitability as either bioplastic feedstock or pelletized livestock feed.</p>
dc.description.comments <p>This article is from <em>Advances in Materials Science and Engineering</em> 2016 (2016): 4159258, doi:</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/799/
dc.identifier.articleid 2084
dc.identifier.contextkey 10101782
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/799
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1600
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/799/2016_Verbeek_ExtrudabilityConsolidation.pdf|||Sat Jan 15 01:57:09 UTC 2022
dc.source.uri 10.1155/2016/4159258
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.title Extrudability and Consolidation of Blends between CGM and DDGS
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication ae6468d9-2286-48ad-9293-5cfa893ea5f3
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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