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Viscoelastic characterization of glutenins in wheat kernels measured by creep tests

By: Hernandez-Estrada, Z.J.
Contributor(s): Figueroa, J.D.C [coaut.] | Rayas-Duarte P [coaut.] | Peña-Bautista, R.J [coaut.].
Material type: materialTypeLabelArticlePublisher: 2012ISSN: No (Revista en electrónico); 0260-8774.Subject(s): Compliance | Creep | glutenin subunit | Kelvin?Voigt model | Retardation time | Wheat In: Journal of Food Engineering v. 113, no. 1, p. 19-26Summary: The effect of high and low molecular weight glutenin subunits on viscoelastic properties of wheat kernels was investigated using creep tests with generalized Kelvin¨CVoigt model (r2 ¡Ö 0.94; P < 0.0001). Glu-A1, Glu-B1 and Glu-D1 affected the creep coefficients in Glu-1 loci. Regarding LMW-GS, the locus Glu-A3 had highest influence on creep followed by Glu-B3; Glu-D3 did not showed differences. In general, the modulus of elasticity E0 ¡Ö 242 MPa and viscosity was ¦Ì0 ¡Ö 1.6 ¡Á 107 MPa¡¤s. Higher elastic moduli and viscosity were found in HMW-GS and LMW-GS of good quality compared to the poor quality performance genotypic groups. Samples with subunit Glu-A1 null presented lower elastic modulus and viscosity compared to Glu-A1 1 and 2&#8727;. Glu-B1 13 + 16 presented higher elastic modulus and viscosity, which is associated with good quality performance. The elastic moduli, especially E0 were positively correlated with SDS-volume and rheological properties. This methodology can be applied to few kernels is easy, rapid, and nondestructive.Collection: CIMMYT Staff Publications Collection
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Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection CIS-7139 (Browse shelf) Available
Total holds: 0

Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0260-8774

The effect of high and low molecular weight glutenin subunits on viscoelastic properties of wheat kernels was investigated using creep tests with generalized Kelvin¨CVoigt model (r2 ¡Ö 0.94; P < 0.0001). Glu-A1, Glu-B1 and Glu-D1 affected the creep coefficients in Glu-1 loci. Regarding LMW-GS, the locus Glu-A3 had highest influence on creep followed by Glu-B3; Glu-D3 did not showed differences. In general, the modulus of elasticity E0 ¡Ö 242 MPa and viscosity was ¦Ì0 ¡Ö 1.6 ¡Á 107 MPa¡¤s. Higher elastic moduli and viscosity were found in HMW-GS and LMW-GS of good quality compared to the poor quality performance genotypic groups. Samples with subunit Glu-A1 null presented lower elastic modulus and viscosity compared to Glu-A1 1 and 2∗. Glu-B1 13 + 16 presented higher elastic modulus and viscosity, which is associated with good quality performance. The elastic moduli, especially E0 were positively correlated with SDS-volume and rheological properties. This methodology can be applied to few kernels is easy, rapid, and nondestructive.

Global Wheat Program

English

CIMMYT Informa No. 1813|Elsevier

Lucia Segura

INT0368

CIMMYT Staff Publications Collection

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