Feasibility study of tomato fruit characterization by fast XRF analysis for quality assessment and food traceability
Authors/Creators
- 1. University of Catania, Italy
- 2. Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Italy
Description
Food product nutritional and sensory characteristics are often deeply linked to its territory of origin; therefore, its
authentication by means of elemental composition becomes crucial for traceability and fighting food fraud. This
study aims to establish a fast and reproducible procedure for origin and quality assessment of Sicilian tomato
fruits, including PGI “Pomodoro di Pachino”, by using the X-ray fluorescence (XRF) technique. Measurements
were performed on different parts of PGI Pachino tomatoes belonging to the same production lot. Principal
Component and Cluster Analyses show that the samples cluster accordingly with the production lot, disentangling
the different parts of the fruit. This procedure, which uses XRF yield elemental pattern and statistical
analysis, establishes a solid basis for characterizing elemental profiles by a fast XRF in-situ campaign, supporting
the traceability system. The reliability of XRF results was confirmed by comparing elemental concentrations with
ICP-MS measurements, performed for comparison, and tomato literature values.
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