Estimation of antioxidant components of tomato using VIS-NIR reflectance data by handheld portable spectrometer

Péter Szuvandzsiev, Lajos Helyes, Andrea Lugasi, Csongor Szántó, Piotr Baranowski, Zoltán Pék

Research output: Contribution to journalArticle

16 Citations (Scopus)


Processing tomato production represents an important part of the total production of processed vegetables in the world. The quality characteristics of processing tomato, important for the food industry, are soluble solids content and antioxidant content (such as lycopene and polyphenols) of the fruit. Analytical quantification of these components is destructive, time and labour consuming. That is why researchers try to develop a non-destructive and rapid method to assess those quality parameters. The present study reports the suitability of a portable handheld visible near infrared spectrometer to predict soluble solids, lycopene and polyphenol content of tomato fruit puree. Spectral ranges of 500-1000 nm were directly acquired on fruit puree of five different tomato varieties using a FieldSpec HandHeld 2™ Portable Spectroradiometer. Immediately after spectral measurement, each fruit sample was analysed to determine soluble solids, lycopene and polyphenol content. Partial least square regressions were carried out to create models of prediction between spectral data and the values obtained from the analytical results. The accuracy of the predictions was analysed according to the coefficient of determination value (R2), the root mean square error of calibration/ cross-validation.

Original languageEnglish
Pages (from-to)521-527
Number of pages7
JournalInternational Agrophysics
Issue number4
Publication statusPublished - Oct 1 2014



  • SSC
  • VIS NIR reflectance
  • lycopene
  • polyphenols
  • tomato

ASJC Scopus subject areas

  • Water Science and Technology
  • Agricultural and Biological Sciences(all)
  • Soil Science
  • Fluid Flow and Transfer Processes

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