Application of photoacoustic spectroscopy to the optical study of pigments in corn pericarp: spectral separation of optical absorption centers

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Título :	Application of photoacoustic spectroscopy to the optical study of pigments in corn pericarp: spectral separation of optical absorption centers
Palabras clave :	Photoacoustic Spectroscopy
Fecha de publicación :	16-ene-2013
Editorial :	High Temperatures-High Preassures
Descripción :	The optical absorption centers in corn pericarp biopolymers have been studied by photoacoustic spectroscopy and the phase-resolved technique. The results show that the optical absorption spectra of these samples are formed by the superposition of two absorption bands, one of this corresponding to the cellulose in the epidermis and the other to o-gluciside pigments of flavonoid type wich are bound to the cellulose sugars. A spatial separation was obtained of the materials responsible for these absorption bands as a functions of the Ca(OH)2 concentration used in the alkaline cooking process which is the result of hemicellulose dissolution in these biopolymers. Research article of journal indexed in ISI database. Instituto Politecnico Nacional
URI :	http://www.repositoriodigital.ipn.mx/handle/123456789/10818
Otros identificadores :	0018-1544 http://hdl.handle.net/123456789/325
Aparece en las colecciones:	Doctorado

Ficheros en este ítem:

Fichero	Descripción	Tamaño	Formato
2000 HT-HP v32 p379 pericarp.pdf		662.58 kB	Adobe PDF	Visualizar/Abrir

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