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Estudio de la interacción de luz con sustancias con alto contenido de sacarosa y fructuosa

In the teaching-learning process at the upper and upper secondary levels, it is difficult to motivate students about the importance of knowing and applying basic concepts in industrial processes. Therefore, it is proposed how to apply the concept of light polarization and spectroscopy to visualize the differences between substances based on sucrose or fructose. Both techniques have been applied in various industrial processes; their cost is regularly high and require extensive training. In this paper, we present the results of the implementation of a low cost linear polariscope for the analysis of natural bee honey and syrups based on sucrose. The arrangement consists of a semiconductor laser, a photodiode, two polarizers, a stepper motor and some mechanical elements, all controlled by the computer through a graphical interface. To validate the results, an optical array based on a low-cost commercial spectroscope is used. By implementing this experimental arrangement, the concepts of polarization, optical activity, atomic-molecular physics, electronic instrumentation and principles of equipment design and construction are involved.