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Proceedings Paper

Optical temperature behavior of a starch-water mixture
Author(s): Juan de Dios Ortiz-Alvarado; Berenice Yahuaca-Juárez; Pedro Vázquez-Landaverde; Eduardo Morales-Sánchez; Héctor E. Martínez-Flores; Alfredo Canto-Pérez; Jorge A. Huerta-Ruelas
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Paper Abstract

An optical set-up was developed to measure transmitted and scattered light in real time using a photodiode array as a detector and tested during starch heating. Statistical parameters calculated were Partial Integrated Scattering (PIS) and variance. Understanding behavior of starch under heat treatment in the presence of water is very important in food industry. The structure of heated starch granule changes depending on different factors like pH, solvent type and amount, enzime presence, amylose/amylopectin relation, etc., such changes has been attempted by using several techniques. In this work, solutions in distilled water of amylopectin, were evaluated. Calcium hydroxide solution was also tested and mixed with previous amylopectin samples to evaluate any interaction in a two-phase system. A close relationship was found between the observed optical signals with literature reported structure changes in starch, demonstrating that the system developed has potential to be used in a real industrial process for monitoring and control.

Paper Details

Date Published: 4 December 2009
PDF: 6 pages
Proc. SPIE 7499, Seventh Symposium Optics in Industry, 74991F (4 December 2009); doi: 10.1117/12.848949
Show Author Affiliations
Juan de Dios Ortiz-Alvarado, Ctr. de Investigación en Ciencia Aplicada y Tecnología Avanzada, IPN (Mexico)
Berenice Yahuaca-Juárez, Univ. Michoacana de San Nicolás de Hidalgo (Mexico)
Pedro Vázquez-Landaverde, Ctr. de Investigación en Ciencia Aplicada y Tecnología Avanzada, IPN (Mexico)
Eduardo Morales-Sánchez, Ctr. de Investigación en Ciencia Aplicada y Tecnología Avanzada, IPN (Mexico)
Héctor E. Martínez-Flores, Univ. Michoacana de San Nicolás de Hidalgo (Mexico)
Alfredo Canto-Pérez, Ctr. de Investigación en Ciencia Aplicada y Tecnología Avanzada, IPN (Mexico)
Jorge A. Huerta-Ruelas, Ctr. de Investigación en Ciencia Aplicada y Tecnología Avanzada, IPN (Mexico)


Published in SPIE Proceedings Vol. 7499:
Seventh Symposium Optics in Industry
Guillermo García Torales; Jorge L. Flores Núñez; Gilberto Gómez Rosas; Eric Rosas, Editor(s)

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