Effect of Calcium Salts Concentration on the Viscoelastic Properties of Sintered Tablets from Flours and Tortillas Evaluated by Stress-Relaxation Tests

Néstor Ponce-García, David Santiago-Ramos, Juan de Dios Figueroa-Cárdenas, José Juan Véles-Medina, Anayansi Escalante-Aburto

Research output: Contribution to journalArticle

Abstract

Abstract: This research aimed to evaluate the effect of different calcium compounds and their concentration on the viscoelastic parameters of flours and tortillas obtained with traditional and ecological nixtamalization. Specimens (tablets) of nixtamalized flours and tortillas (14% moisture) prepared with three different calcium sources and four concentrations were sintered using a die and a hydraulic press and were evaluated by stress-relaxation tests with a texturometer. Data collected from the stress-relaxation curve were fitted into a three-element generalized Maxwell model (r2 = 0.9999), allowing the detection of significant differences in the estimated viscoelastic parameters. When flours are processed into tortillas, the most notable change was the increase of +88.44% and +73.44%, respectively, in the summation of the elastic modulus, and the compressional viscosity in samples produced with CaCO3. On the contrary, tablets from samples with Ca(OH)2 presented a sharp diminishing (loss) in both of the evaluated viscoelastic parameters, accounting a decrease of −39.82% and −46.28% for the elastic modulus and compressional viscosity summations, respectively. Highly significant correlations were found among viscoelastic parameters when a slight proportional increase was observed in the specific elastic moduli, meaning that the energy was stored by each elastic element in the tablets, while the compressional viscosity coefficients varied as a function of time. Finally, it was found that the residual spring due to the pure elastic component (E0) stored energy during the entire test. Practical Application: There is no published information about a simple methodology for the evaluation of the viscoelastic properties of dry nixtamalized flours (powder) with a texturometer. The method proposed was sensitive and accurate, since it was capable of detecting differences among samples processed under distinct processing factors conditions. The study of viscoelastic properties of grain foods contributes to the construction of molecular theories occurring in their chemical compounds, which is strongly related to food texture. Those theories are handy to improve nutritional and textural properties of grain foods and are essential to powder handling, processing, and transportation, which allows the processing factors optimization.

Original languageEnglish
Pages (from-to)3653-3663
Number of pages11
JournalJournal of Food Science
Volume84
Issue number12
DOIs
Publication statusPublished - 1 Dec 2019

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tortillas
stress relaxation
Flour
Exercise Test
salt concentration
Tablets
flour
Elastic Modulus
Salts
modulus of elasticity
Viscosity
Calcium
calcium
grain foods
viscosity
Food
Powders
powders
Calcium Compounds
nixtamalization

All Science Journal Classification (ASJC) codes

  • Food Science

Cite this

Ponce-García, Néstor ; Santiago-Ramos, David ; Figueroa-Cárdenas, Juan de Dios ; Véles-Medina, José Juan ; Escalante-Aburto, Anayansi. / Effect of Calcium Salts Concentration on the Viscoelastic Properties of Sintered Tablets from Flours and Tortillas Evaluated by Stress-Relaxation Tests. In: Journal of Food Science. 2019 ; Vol. 84, No. 12. pp. 3653-3663.
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Effect of Calcium Salts Concentration on the Viscoelastic Properties of Sintered Tablets from Flours and Tortillas Evaluated by Stress-Relaxation Tests. / Ponce-García, Néstor; Santiago-Ramos, David; Figueroa-Cárdenas, Juan de Dios; Véles-Medina, José Juan; Escalante-Aburto, Anayansi.

In: Journal of Food Science, Vol. 84, No. 12, 01.12.2019, p. 3653-3663.

Research output: Contribution to journalArticle

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