Materials, Photonic Devices, and Sensors

Simplified optical fiber RGB system in evaluating intrinsic quality of Sala mango

[+] Author Affiliations
Ommi Kalsom Mardziah Yahaya, Mohd. Zubir Mat Jafri, Azlan Abdul Aziz, Ahmad Fairuz Omar

University of Science, Malaysia, School of Physics, 11800 Penang, Malaysia

Opt. Eng. 54(6), 067108 (Jun 22, 2015). doi:10.1117/1.OE.54.6.067108
History: Received March 24, 2015; Accepted May 8, 2015
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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.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Ommi Kalsom Mardziah Yahaya ; Mohd. Zubir Mat Jafri ; Azlan Abdul Aziz and Ahmad Fairuz Omar
"Simplified optical fiber RGB system in evaluating intrinsic quality of Sala mango", Opt. Eng. 54(6), 067108 (Jun 22, 2015). ; http://dx.doi.org/10.1117/1.OE.54.6.067108


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