Abstract

In the Philippines, chunks of calcium carbide are usually used as a ripening agent for mango samples. However, the acetylene gas produced during the ripening process can cause harm to human health. Likewise, considering the country's economic standing, the development of low-cost and portable instruments is encouraged. To address these issues, a multi-spectral near-infrared light-emitting diode-based spectrometer was developed. This study aims to determine the calcium carbide residue detection capability using the developed spectrometer prototype. Partial least square regression and linear discriminant analysis showed 81% calcium carbide residue prediction capability and 88.9% correct classification, respectively. Therefore, the multispectral near-infrared light-emitting diode-based spectrometer prototype has the chance to detect calcium carbide chemical residue in mango fruit non-destructively