Criegee mechanism as a safe pathway of color reduction in sugarcane juice by ozonation

Author(s)

de Souza Sartori, Juliana Aparecida ; Figueiredo Angolini, Celio Fernando ; Eberlin, Marcos Nogueira ; de Aguiar, Claudio Lima

• Document type: Journal article
• Source: Food Chemistry; v. 225, p. 181-187, JUN 15 2017.
• Web of Science Citations: 10

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. (AU)

• FAPESP's process: 14/03512-5 - Physical and chemical quality of sugarcane on ozonation process of juice in sustainable reduction of color ICUMSA and vegetal impurities
• Grantee: Juliana Aparecida de Souza Sartori
• Support Opportunities: Scholarships in Brazil - Doctorate