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Type: Artigo
Title: Criegee Mechanism As A Safe Pathway Of Color Reduction In Sugarcane Juice By Ozonation
Author: de Souza Sartori
Juliana Aparecida; Figueiredo Angolini
Celio Fernando; Eberlin
Marcos Nogueira; de Aguiar
Claudio Lima
Abstract: The production of crystal sugar is based on sugarcane juice clarification through sulphitation, that is, heat treatment with sulfur dioxide. The use of ozonation as an alternative to sulphitation aims to eliminate the disadvantageous presence of residual sulfite in crystal sugar. Both treatments are used to reduce color of sugarcane juice. The objective of this work was to evaluate two process parameters (temperature and pH) to reduce gallic acid, a low molecular weight pigment (MW 170 g mol(-1)) widely found in sugarcane. Gallic acid was used as a model compound in sucrose solutions. The results showed that degradation of gallic acid was favored from pH 7.0 to 7.82 and temperature values between 50 and 70 degrees C. The reaction mechanism was proposed for gallic acid degradation by ozone based on Criegee mechanism. Ozonation was an efficient method to reduce the potential low molecular weight pigment present in the sugarcane. (C) 2017 Elsevier Ltd. All rights reserved.
Subject: Clarification
Editor: Elsevier Sci LTD
Rights: fechado
Identifier DOI: 10.1016/j.foodchem.2017.01.028
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

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