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GrainGenes Reference Report: CCM-81-759

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Reference
CCM-81-759
Title
Effect of foliar sulfur and nitrogen fertilization on wheat storage protein composition and dough mixing properties
Journal
Cereal Chemistry
Year
2004
Volume
81
Pages
759-766
Author
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Tea I
Genter T
Naulet N
Boyer V
Lummerzheim M
Kleiber D
Abstract
Nitrogen (N) and sulfur (S) supplies have a strong influence on the quality and quantity of wheat storage proteins, which play an important role in the breadmaking process. Nitrogen derived from urea, S from micronized elemental sulfur, and a mixture of both (N+S) were applied at anthesis stage on wheat by foliar spray. To relate N and S incorporation in storage proteins to the quality of dough, their incorporation into each storage protein fraction was measured: monomers, low molecular weight glutenin subunits (LMW-GS), and high molecular weight glutenin subunits (HMW-GS). Then protein fraction quantities, molecular weight distribution (MWD), polymerization index (PI), and molecular dimensions of unextractable polymeric protein (UPP), as well as dough mixing properties were determined. Fertilizers N and S were differentially incorporated into each storage protein fraction, influencing protein synthesis. Moreover, after the N+S fertilization, the increase of the polymeric proteins induced an increase in molecular weight and compactness, as well as in dough strength and consistency. These results provide evidence that N and S fertilizers applied by foliar spray route at anthesis, simultaneously, play an important role in controlling the storage protein synthesis and the degree of polymerization, which in turn influence dough mixing properties
Keyword
bread
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