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United States Department of Agriculture

Agricultural Research Service

Title: Improved Physical Properties of Zein Using Glyoxal As a Crosslinker

Authors
item Woods, Kristen
item Selling, Gordon

Research conducted cooperatively with:
item Illinois Corn Marketing Board

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: January 15, 2007
Publication Date: March 30, 2007
Citation: Woods, K.K., Selling, G.W. 2007. IMPROVED PHYSICAL PROPERTIES OF ZEIN USING GLYOXAL AS A CROSSLINKER. Meeting Abstract. xx.

Technical Abstract: The effect of crosslinkers glyoxal, methylglyoxal and formaldehyde on physical properties of zein films was studied. Crosslinker concentrations varied from 0.3 to 6% by zein weight. Films crosslinked with glyoxal and formaldehyde showed a significant increase in tensile strength under certain pH conditions. Films of glyoxal reactions conducted at basic pH gave the highest overall tensile strength, with a 52% increase compared to the control film. Formaldehyde films had improved tensile strength when reacted at acidic or neutral pH. Methylglyoxal had no effect on the tensile strength of zein films. Zein films crosslinked with glyoxal or formaldehyde were found to swell, rather than degrade, when placed in three compatible solvents. Films crosslinked with glyoxal were resistant to boiling water. Denaturing gel electrophoresis of glyoxal and formaldehyde reactions showed the presence of high molecular weight moieties when compared to control reactions.

Last Modified: 7/31/2014
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