SUBSTANTIATION OF THE SPECTRAL RANGE OF PHOTOLUMINESCENT POTATO SOLANIZATION CONTRO

Abstract

Potato processing is carried out at large automated enterprises, and the industry requires more automated equipment for quality assessment and sorting. There are many ways to increase potato yields, the most effective is planting tubers in the light. However, eating green potatoes can have a detrimental effect on the human body, since solanine is toxic. Therefore, the control of the potato solanization is relevant. (Research purpose) The research purpose is studying the optical luminescent properties of potato tubers in the solanization process and justifying the spectral ranges for creating a system of its control. (Materials and methods) The spectral characteristics of potato tubers were measured using a diffraction spectrofluorimeter. (Results and discussion) The excitation of potato tubers by radiation occurs in the ranges of 310-570 and 590-690 nanometers, the excitation maxima are approximately at wavelengths of 378, 425, 486, 528, 614 and 662 nanometers. Radiation shorter than 310 nanometers and longer than 690 nanometers does not excite luminescence. For the short-wave excitation range, a clear decrease in the integral absorption capacity H is observed during solanization, while the highest value of H is observed for the ranges of 310-404 and 404-474 nanometers. For long-wavelength ranges, the dependence of H(t) has a maximum at the 13th day of observation. The most optimal use of the ratio H404-474/H590-640, which has the highest ratio R2 = 0.89 with polynomial approximation. (Conclusions) The use of spectral ranges 404-474 and 590-640 nanometers is the most optimal for photoluminescent monitoring of the solanization. These results can be used as the basis for the methodology and digital device for monitoring the solanization of potato tubers.