El Instituto Politécnico Nacional
Contribuye al desarrollo económico y social de la nación, a través de la formación integral de personas competentes; de la investigación, el desarrollo tecnológico y la innovación. Además tiene reconocimiento internacional por su calidad e impacto social.
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http://repositoriodigital.ipn.mx/handle/123456789/10925Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.date | 2012-03-26T22:48:02Z | - |
| dc.date | 2012-03-26T22:48:02Z | - |
| dc.date | 1999 | - |
| dc.date.accessioned | 2013-01-16T11:06:34Z | - |
| dc.date.available | 2013-01-16T11:06:34Z | - |
| dc.date.issued | 2013-01-16 | - |
| dc.identifier | 1655-3521 | - |
| dc.identifier | http://hdl.handle.net/123456789/436 | - |
| dc.identifier.uri | http://www.repositoriodigital.ipn.mx/handle/123456789/10925 | - |
| dc.description | We present a study about the optical caracterization of the absorption centers in corn pericarp biopolymers by means of the Photoacoustic Spectroscopy and Phase Resolved technique. Our results show that the 300-800 nm region of the absorption spectra of these films are constituted by two absorption centers superposition, one of these corresponding to the cellulose of the epidermis (300-350 nm UV region) and the other by pigments present in the hemicellulose of the pericarp (375-450 nm). We demonstrated that these kind of pigments correspond to o-glycosides flavonoids type, which are bound to hemicellulose sugars. We observed a spatial separation of the two absorption centers as a function of the Ca(OH)2 concentration used in the nixtamalization process and this separation is due to the hemicellulose dissolution in the most external leyers of these biopolymers. | - |
| dc.description | Research article of journal indexed in Padron-CONACYT Mexico | - |
| dc.description | Instituto Politecnico Nacional | - |
| dc.language | es | - |
| dc.publisher | Superficies y Vacio | - |
| dc.subject | Caracterizacion optica | - |
| dc.subject | Pericarpio de maiz | - |
| dc.title | Caracterizacion Optica de Centros Absorbentes en Peliculas Biopolimericas Obtenidas de Pericarpio de Maíz | - |
| dc.type | Article | - |
| Aparece en las colecciones: | Doctorado | |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| 1999 S&V v8 p89 Abs pericarp.pdf | 55.41 kB | Adobe PDF | Visualizar/Abrir |
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