Color is the main quality parameter of sugarcane juice since it is directly connected to crystal sugar value. However, color control (sulfitation) and monitoring (laboratory analysis) by sugar mills have problems. Electrocoagulation is an alternative process due to non-generation of residues and successful application in other components. While for monitoring, visual computation and inline system would brought greater competitiveness for the sector. Then, the research internship abroad aims to evaluate color reduction of sugarcane juice treated by electrocoagulation, using state of the art-technology. Three color degradation kinetics (1h period) will be evaluated using 25, 30 and 35V, with sample collection every 10 min. The samples will be scanned in spectrophotometer covering visible wavelenght (380-780 nm) and then it will be determined color space L*a*b (CIELAB) to color monitoring. The phenolic compounds quantification and identification (sugarcane juice pigment) will be performed by the liquid chromatography with UV-Vis diode-array detector and C18 column. Folin-Ciocalteu will be used to determine the total phenolic compounds concentration. The results will be analyzed through Tukey test (p < 0.05) and descriptive statistical analysis and decision tree will be applied to discriminate samples along electrocoagulation process kinetics.
News published in Agência FAPESP Newsletter about the scholarship: