N Partitioning between Gluten Fractions in a Set of Italian Durum Wheat Cultivars: Role of the Grain N Content

Foods
Marina MeflehFrancesco Giunta

Abstract

Grain protein content constitutes a key quality trait for durum wheat end-products and may also impact grain protein composition. A total of sixteen durum wheat cultivars were analyzed in a field trial during two seasons at two nitrogen (N) levels to evaluate whether and to what extent the variation in total grain N was associated with variation in the quantity of the various protein fractions and grain quality parameters. Genotypic variation in grain N content correlated with the variation in the content of all three protein fractions, although the strength of the correlation with gliadin and albumin-globulin was higher than that with glutenins. Genotypic variation in gliadin and glutenin content was more tightly correlated with the variation in the sulfur (S)-rich protein groups than with the S-poor protein groups and subunits. The variation in the percentage of unextractable polymeric proteins (UPP%) among genotypes was independent of their glutenin allelic composition. The significant genotypic differences in UPP% and in the ratios between protein groups and subunits were not influenced by the corresponding variation in grain N content. The final grain N content can only account for part of the variation in quality paramete...Continue Reading

References

Sep 30, 2006·Food Microbiology·Herbert Wieser
Feb 16, 2008·Critical Reviews in Food Science and Nutrition·François MariottiPhilippe Patureau Mirand
Mar 31, 2009·Journal of Agricultural and Food Chemistry·Christian ZörbKarl H Mühling
Aug 5, 2017·European Journal of Agronomy : the Journal of the European Society for Agronomy·Michele A De SantisZina Flagella
Sep 30, 2018·Journal of the Science of Food and Agriculture·Marina MeflehRosella Motzo
Apr 13, 2019·Journal of the Science of Food and Agriculture·Marina MeflehRosella Motzo

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Methods Mentioned

BETA
Size Exclusion-High Performance Liquid Chromatography

Software Mentioned

R

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