This work aimed to evaluate a colorimetric method of reducing sugar (RS) analysis based on its reaction with triphenyl tetrazolium chloride, which is of fast operation and suitable to be applied in the sugarcane mills. As the purity of sugarcane juice presents high correlation with RS, an equation of linear regression (RS/RJ) was developed, and it was compared to other equations developed in São Paulo (RS/SP) and Paraíba (RS/PB). The RS/SP equation, which is currently adopted in Rio de Janeiro, showed a higher downward slope in comparison to the others, indicating the need to create an equation, which is proper to each sugarcane producing region.
sugar technology; sugar industry; colorimetry; analytical methods
