The mass transport phenomenon through pericarp during the nixtamalization process
Por:
Gutierrez-Cortez, E., Rojas-Molina, I., Zambrano-Zaragoza, M. L., Espinosa-Arbelaez, D. G., Rojas, A., Garcia, J. C., Cornejo-Villegas, M. A., Rodriguez-Garcia, M. E.
Publicada:
1 oct 2016
Resumen:
The aim of this study was to correlate the apparent diffusion coefficients with the morphological changes that take place in pericarp through the evaluation of cooking stage of corn grains, in order to set the process conditions, where the diffusion rate is faster to reduce time in nixtamalization process. In order to set the process conditions where the diffusion rate is greater to reduce the nixtamalización process time. The diffusion of calcium was studied at three temperatures (70, 80 and 90 °C). The cooking of the corn was conducted in a differential photoacoustic cell (DPC). Additionally, diffusion process was simulated in a modulated temperature differential scanning calorimeter (MDSC). After cooking, the residual calcium content in the pericarp was determined by atomic absorption spectroscopy (AAS). These data were used to solve the mathematical modeling. The diffusion model employed was developed using Fick's law in order to explain the transport of mass into the corn. The diffusion phenomenon was related to the morphological changes experienced by pericarp using the low-vacuum scanning electron microscopy technique (LV-SEM). The final apparent diffusion coefficients were 0.9265, 1.2101 and 1.4533 m2/s × 10-8 at 70, 80 and 90 °C respectively; then, the best process conditions recommended for cooking stage of QPM corn grains are 90 °C during 50 min. © 2016 Institution of Chemical Engineers
Filiaciones:
Gutierrez-Cortez, E.:
Univ Nacl Autonoma Mexico, Fac Estudios Super Cuautitlan, Dept Ingn & Tecnol, Lab Proc Transforrnac Alimentos & Tecnol Emergent, Km 2-5 Carretera Cuautitlan Teoloyucan, Cuautitlan 54714, Edo De Mexico, Mexico
Univ Autonoma Queretaro, Fac Ingn, Ingn Agroind, Carretera Chichimequillas S-N, Queretaro 76140, Qro, Mexico
Rojas-Molina, I.:
Univ Autonoma Queretaro, Fac Quim, Lab Invest Quim & Farmacol Prod Nat, Posgrad Ciencias Quim Biol, Cerro Campanas S-N, Queretaro 76010, Qro, Mexico
Zambrano-Zaragoza, M. L.:
Univ Nacl Autonoma Mexico, Fac Estudios Super Cuautitlan, Dept Ingn & Tecnol, Lab Proc Transforrnac Alimentos & Tecnol Emergent, Km 2-5 Carretera Cuautitlan Teoloyucan, Cuautitlan 54714, Edo De Mexico, Mexico
Espinosa-Arbelaez, D. G.:
Ctr Ingn & Desarrollo Ind CIDESI, Ave Playa Pie de la Cuesta 702, Queretaro 76130, Qro, Mexico
Rojas, A.:
Univ Autonoma Queretaro, Fac Ingn, Div Invest & Posgrad, Cerro Campanas S-N, Queretaro 76010, Qro, Mexico
Garcia, J. C.:
Univ Autonoma Metropolitana, Dept Matemat, Unidad Iztapalapa, Ave San Rafael Atlixco 186, Mexico City 09340, DF, Mexico
Cornejo-Villegas, M. A.:
Univ Nacl Autonoma Mexico, Fac Estudios Super Cuautitlan, Dept Ingn & Tecnol, Lab Proc Transforrnac Alimentos & Tecnol Emergent, Km 2-5 Carretera Cuautitlan Teoloyucan, Cuautitlan 54714, Edo De Mexico, Mexico
Rodriguez-Garcia, M. E.:
Univ Nacl Autonoma Mexico, Dept Nanotecnol, Ctr Fis Aplicada & Tecnol Avanzada, Blvd Juriquilla 3001,AP 1-1010, Juriquilla La Mesa 76230, Queretaro, Mexico
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