Artículos de revistas
Criegee Mechanism As A Safe Pathway Of Color Reduction In Sugarcane Juice By Ozonation
Registro en:
Food Chemistry. Elsevier Sci Ltd, v. 225, p. 181 - 187, 2017.
0308-8146
1873-7072
WOS:000395955900023
10.1016/j.foodchem.2017.01.028
Autor
de Souza Sartori
Juliana Aparecida; Figueiredo Angolini
Celio Fernando; Eberlin
Marcos Nogueira; de Aguiar
Claudio Lima
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 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. 225 181 187 Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2014/03512-5, 2009/54635-1] National Council for Scientific and Technological Development (CNPq) [310367/2013-1] Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)