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http://repositoriodigital.ipn.mx/handle/123456789/10898| Título : | Estudio de la composición química de pericarpio de maíz con las técnicas XPS y EDAX |
| Palabras clave : | Pericarpio de maiz XPS y EDAX |
| Fecha de publicación : | 16-ene-2013 |
| Editorial : | Superficies y Vacio |
| Descripción : | XPS and EDAX surface techniques were used to determine the chemical composition of pericarp of
crude maize and maize submissive a process of traditional nixtamalization varying the content of
Ca(OH)2. Also maize with 1 and 2 % of NaOH and 1 % of KOH was used. With XPS it is observed that,
pericarp crude and cooked are compound mainly of C and O. In addition, pericarp crude has a small
amount of N; whereas pericarp cooked has small amounts of Ca and N. For pericarp crude and cooked
with 0, 2 and 3 % of Ca(OH)2, the amount of C is greater in the outer part compared with the inner.
However, pericarp cooked with 4 % of Ca(OH)2 has greater amount of C in the inner part. All the
samples of pericarp have amounts of Si and Al near ones it limits of detection of XPS spectroscopy. In
pericarp cooked with Ca(OH)2, the Ca forms the compound CaCO3. Whereas in pericarp cooked with 1
and 2 % of NaOH and 1 % of KOH, sodium and potassium they form the compounds Na2CO3 and
KNO3, respectively. On the other hand, results EDAX also show, besides of signals intense of K, for
pericap crude, and Ca, for the cooked, the existence of small peaks of Si, P, and S. Research article of journal indexed in Padron-CONACYT Mexico Instituto Politecnico Nacional |
| URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/10898 |
| Otros identificadores : | 1665-3521 http://hdl.handle.net/123456789/411 |
| Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| 1999 S&V v8 p64 XPS-EDAX-pericarp.pdf | 80.64 kB | Adobe PDF | Visualizar/Abrir |
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