{"id":2972,"date":"2025-05-10T09:06:54","date_gmt":"2025-05-10T09:06:54","guid":{"rendered":"https:\/\/behinfarayandsadr.com\/en\/?p=2972"},"modified":"2025-05-18T11:05:57","modified_gmt":"2025-05-18T11:05:57","slug":"the-effect-of-wheat-flour-protein-quantity-and-quality-on-bread-volume","status":"publish","type":"post","link":"https:\/\/behinfarayandsadr.com\/en\/?p=2972","title":{"rendered":"The effect of wheat flour protein quantity and quality on bread volume"},"content":{"rendered":"\t\t
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The effect of wheat flour protein quantity and quality on bread volume<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Protein quantity \u2260 protein functionality.

This graph, conceptualized by A. Bijttebier,
makes that distinction crystal clear\u2026

\u00a0Despite having the same % protein,
one cultivar consistently produces significantly higher loaves.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\ud83e\uddea Let\u2019s decode it:<\/p>

\u2705 Cultivar A shows a steeper slope
this means that each incremental % of protein translates into a much larger increase in loaf volume.<\/p>

\u2705 Cultivar B, with a flatter slope,
reveals that its protein even at similar levels
cannot form a gluten network capable of sustaining gas retention or oven spring.<\/p>

\ud83d\udccd Both lines intersect near 8% protein, highlighting a well-established concept:<\/p>

– Below this level,
protein quality plays a limited role. Bread volume is influenced more by starch gelatinization, batter viscosity, and limited gas expansion.<\/p>

– Above 8%,
however, gluten network formation becomes the dominant performance factor\u2014and protein quality becomes the differentiator.<\/p>

\ud83e\uddec What defines protein quality?<\/p>

– Glutenins (especially high-molecular-weight subunits) create the elastic backbone of the dough.<\/p>

– Gliadins add plasticity and extensibility.<\/p>

– The ability of gluten to form a cohesive, extensible, and gas-retaining network is what translates into actual bread volume.<\/p>

\ud83d\udd3a This is not theoretical.<\/p>

\u27a1\ufe0f In protein reconstitution studies,
gluten from high-quality flour was combined with starch and solubles from poor-quality flours\u2014yet the loaf volume remained high.<\/p>

\u27a1\ufe0f Gluten protein fraction alone dictated the result.<\/p>

\ud83e\uddf0 Why this matters in practice:<\/p>

For millers, bakers, breeders, and technologists:<\/p>

– A flour with 12% protein might perform like a 10% or 14%, depending on gluten quality.<\/p>

– A regression slope like this gives a fast, data-driven estimate of protein effectiveness\u2014with just one standardized bread test and protein %.<\/p>

– To complement it:
Use SDS sedimentation, Gluten Index, Frainograph , Mixolab, Alveograph P\/L, Extensograph, resistance\/extension, and controlled bake tests.<\/p>

\ud83d\udcca Key Insight:
Bread volume is a function of protein\u2019s ability to form and sustain a thermomechanically stable gluten matrix.<\/p>

Source: #Grainar<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

The effect of wheat flour protein quantity and quality on bread volume Protein quantity \u2260 protein functionality. This graph, conceptualized by A. Bijttebier, makes that distinction crystal clear\u2026  Despite having the same % protein, one cultivar consistently produces significantly higher loaves. \ud83e\uddea Let\u2019s decode it: \u2705 Cultivar A shows a steeper slope this means that […]<\/p>\n","protected":false},"author":1,"featured_media":3016,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21],"tags":[],"_links":{"self":[{"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=\/wp\/v2\/posts\/2972"}],"collection":[{"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2972"}],"version-history":[{"count":4,"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=\/wp\/v2\/posts\/2972\/revisions"}],"predecessor-version":[{"id":3017,"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=\/wp\/v2\/posts\/2972\/revisions\/3017"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=\/wp\/v2\/media\/3016"}],"wp:attachment":[{"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/behinfarayandsadr.com\/en\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}