Evaluation of yacon luminosity with color and temperature measurement prototype

Abstract

The objective of this work was to propose a color and temperature measurement prototype constructed with the temperature sensor DHT11 and the color sensor TCS230-3200 connected to an Arduino Nano, with a serial connection information was transferred to a computer with PXL-DAQ and Microsoft Excel® 2013 programs, the color measurements were recorded in RGB color model for a conversion to CIE L*a*b* system. A simultaneous color and temperature measurement equipment at pilot level, as the one proposed in this paper, becomes an economical alternative to costly commercial equipment. With the prototype the luminosity loss and changes of temperature of yacon (Smallanthus sonchifolius) were quantified, and the changes of browning indexes and color difference. These parameters presented a behavior similar to that found in the literature.