Electronic Nose Based on Piezoelectric Quartz Crystal for Mango Fruit Quality Assessment

  • Samuel B. Dulay Department of Chemistry, University of Santo Tomas, Manila Department of Chemistry, Nueva Vizcaya State University Bayombong, Nueva Vizcaya
  • Dharmatov Rahula B. Albano Department of Chemistry, University of Santo Tomas, Manila
  • Fortunato B. Sevilla III Department of Chemistry, University of Santo Tomas, Manila
Keywords: electronic nose, piezoelectric quartz crystal, mango fruit maturity, principal component analysis

Abstract

An electronic nose based on piezoelectric quartz crystal was developed for monitoring the maturation of carabao mango. This device detects the volatile organic compounds present in the headspace of the mango fruit. The crystals were coated with different organic organic polymers that interact with the volatile organic compounds, and this interaction was monitored through a self-assembled instrumentation and recorded by a computer in terms of frequency change. The quartz sensors gave stable response to the mango fruit sample, exhibited good repeatibility (r.s.d. = 3.3 to 5.5%, n=3) and good reproducibility (r.s.d. = 1.9 to 6.1%, n=5). Different signals were observed at different stages of the maturation of carabao mango fruit. The application of principal component analysis (PCA) enabled the discrimination of the responses of the electronic nose to mango fruits at different stages of maturation.
Published
2010-03-01
How to Cite
Dulay, S. B., Albano, D. R. B., & Sevilla III, F. B. (2010). Electronic Nose Based on Piezoelectric Quartz Crystal for Mango Fruit Quality Assessment. KIMIKA, 23(1), 1-8. https://doi.org/10.26534/kimika.v23i1.1-8
Section
Research Articles