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Optical Engineering

Simplified optical fiber RGB system in evaluating intrinsic quality of Sala mango
Author(s): Ommi Kalsom Mardziah Yahaya; Mohamad Zubir Mat Jafri; Azlan Abdul Aziz; Ahmad Fairuz Omar
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Paper Abstract

This study presents an alternative approach for the nondestructive assessment of fruit quality parameters with the use of a simplified optical fiber red–green–blue system (OF-RGB). The optical sensor system presented in this work is designed to rapidly measure the firmness, acidity, and soluble solid content of an intact Sala mango on the basis of color properties. The system consists of three light-emitting diodes with peak emission at 635 (red), 525 (green), and 470 nm (blue), as well as a single photodetector capable of sensing visible light. The measurements were conducted using the reflectance technique. The analyses were conducted by comparing the results obtained through the proposed system with those measured using two commercial spectrometers, namely, QE65000 and FieldSpec 3. The developed RGB system showed satisfactory accuracy in the measurement of acidity (R2=0.795) and firmness (R2=0.761), but a relatively lower accuracy in the measurement of soluble solid content (R2=0.593) of intact mangoes. The results obtained through OF-RGB are comparable with those measured by QE65000 and FieldSpec 3. This system is a promising new technology with rapid response, easy operation, and low cost with potential applications in the nondestructive assessment of quality attributes.

Paper Details

Date Published: 22 June 2015
PDF: 12 pages
Opt. Eng. 54(6) 067108 doi: 10.1117/1.OE.54.6.067108
Published in: Optical Engineering Volume 54, Issue 6
Show Author Affiliations
Ommi Kalsom Mardziah Yahaya, Univ. Sains Malaysia (Malaysia)
Mohamad Zubir Mat Jafri, Univ. Sains Malaysia (Malaysia)
Azlan Abdul Aziz, Univ. Sains Malaysia (Malaysia)
Ahmad Fairuz Omar, Univ. Sains Malaysia (Malaysia)

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