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http://repositoriodigital.ipn.mx/handle/123456789/10620| Título : | Steeping time and cooking temperature dependence of calcium ion diffusion during microwave nixtamalization of corn |
| Palabras clave : | Corn tortillas Calcium diffusion Microwave Nixtamalized |
| Fecha de publicación : | 16-ene-2013 |
| Editorial : | J.L. Fernández-Muñoz |
| Descripción : | We report the calcium ion diffusion through the different parts of the maize kernel during microwave nixtamalization, as a function
of steeping time, and for two cooked processes, one for 100 min at 72 C and the other for 45 min at 92 C. In each case, we
carried out several nixtamalization processes, with different steeped time, from 0 to 24 h. By means of atomic absorption spectroscopy
we measured calcium content in pericarp, germ and endosperm obtained from maize kernel after each nixtamalization process.
We obtained a notable difference of calcium content in those different parts of the maize kernel, being a bigger quantity in the pericarp
and smaller in the endosperm. Calcium ion diffusion in the pericarp and endosperm show a no linear dependence with the steeping
time and a notable increasing with the cooked temperature. This behavior, for higher temperatures, is due to faster pericarp
degradation. In the other hand, calcium ion diffusion in the germ shows an irregular linear dependence with the steeping time,
as well as, an increase of calcium ion diffusion with the cooked temperature for steeping time smaller than 12 h and a decrease
of calcium diffusion with the cooked temperature for steeping time bigger than 12 h. This last, is due to the lost of part of the germ
surface, which is rich in calcium content, during the rinsed process, which it has a bigger damage for highest cooked temperature.
2005 Elsevier Ltd. All rights reserved. CICATA-IPN COFFA |
| URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/10620 |
| Otros identificadores : | 7 http://hdl.handle.net/123456789/95 |
| Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| Fernandez et al 2006.pdf | 119.95 kB | Adobe PDF | Visualizar/Abrir |
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