This study investigated differences in gluten aggregation time and gluten strength using the Hofmeister series in high shear-treated slurries. Two flours (15.1% and 10.6% protein) were evaluated by using a Gluten Peak Tester (GPT). Hofmeister anions including NaF, NaCl, NaBr, NaI, and NaSCN at concentrations ranging from 0.1 to 1.0M and cations including KCl, NaCl, NH4Cl, MgCl2, and CaCl2 at concentrations ranging from 0.0625 to 1.0M were used. The instrument applies high shear to a flour/salt solution slurry and measures torque and aggregation time to form gluten. Aggregation time using the GPT followed the order of the Hofmeister series, with minor effects at salt concentration <0.3M and increasing differences at higher salt concentrations. Torque increased with increasing concentration. Creating models of the trends using second and third order equations demonstrated that gluten aggregation follows a distinct natural law in the slurries. The study confirmed the potential of the high shear based method to be used a research tool to investigate gluten aggregation properties and to potentially predict functionality in baked product systems.

Effect of the Hofmeister series on gluten aggregation measured using a high shear-based technique / J.P. Melnyk, J. Dreisoerner, F. Bonomi, M.F. Marcone, K. Seetharaman. - In: FOOD RESEARCH INTERNATIONAL. - ISSN 0963-9969. - 44:4(2011), pp. 893-896.

Effect of the Hofmeister series on gluten aggregation measured using a high shear-based technique

F. Bonomi;
2011

Abstract

This study investigated differences in gluten aggregation time and gluten strength using the Hofmeister series in high shear-treated slurries. Two flours (15.1% and 10.6% protein) were evaluated by using a Gluten Peak Tester (GPT). Hofmeister anions including NaF, NaCl, NaBr, NaI, and NaSCN at concentrations ranging from 0.1 to 1.0M and cations including KCl, NaCl, NH4Cl, MgCl2, and CaCl2 at concentrations ranging from 0.0625 to 1.0M were used. The instrument applies high shear to a flour/salt solution slurry and measures torque and aggregation time to form gluten. Aggregation time using the GPT followed the order of the Hofmeister series, with minor effects at salt concentration <0.3M and increasing differences at higher salt concentrations. Torque increased with increasing concentration. Creating models of the trends using second and third order equations demonstrated that gluten aggregation follows a distinct natural law in the slurries. The study confirmed the potential of the high shear based method to be used a research tool to investigate gluten aggregation properties and to potentially predict functionality in baked product systems.
Gluten Peak Tester (GPT); Hofmeister series; Gluten aggregation; Gliadin; Glutenin; Flour
Settore BIO/10 - Biochimica
Settore AGR/15 - Scienze e Tecnologie Alimentari
2011
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/159570
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