In recent years the characterization of agricultural and food products has focused on nutritional properties. However, additives and contaminants may not only be transferred to plants and fruits, but they can also induce alterations and compromise the overall quality. In this context, chemical fingerprint analysis is a valuable tool for complementing more conventional analytical methods. We used time of flight secondary ion mass spectrometry (ToF-SIMS) to characterise three different groups of Seggianese olives: (i) treated with an insecticide (dimethoate) and a fungicide (copper oxychloride) (TU); (ii) untreated (UT); and (iii) treated-washed (TW). Intact olive slices and olive oil were analyzed. Principal component analysis (PCA) of the Tof-SIMS spectra was used to investigate similarities among samples. Results showed that TW olives were more similar to UT samples than to TU samples. However, the washing process was not totally effective, since the treatment was able to induce alterations in the composition of the olives.

Focardi, S., S., R., S., M., A., T., D., L.S., D. G., C., et al. (2006). ToF-SIMS and PCA studies of Seggianese olives and olive oil. COLLOIDS AND SURFACES. A, PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 279, 225-232 [10.1016/j.colsurfa.2006.01.003].

ToF-SIMS and PCA studies of Seggianese olives and olive oil

FOCARDI, SILVIA;ROSSI, CLAUDIO
2006-01-01

Abstract

In recent years the characterization of agricultural and food products has focused on nutritional properties. However, additives and contaminants may not only be transferred to plants and fruits, but they can also induce alterations and compromise the overall quality. In this context, chemical fingerprint analysis is a valuable tool for complementing more conventional analytical methods. We used time of flight secondary ion mass spectrometry (ToF-SIMS) to characterise three different groups of Seggianese olives: (i) treated with an insecticide (dimethoate) and a fungicide (copper oxychloride) (TU); (ii) untreated (UT); and (iii) treated-washed (TW). Intact olive slices and olive oil were analyzed. Principal component analysis (PCA) of the Tof-SIMS spectra was used to investigate similarities among samples. Results showed that TW olives were more similar to UT samples than to TU samples. However, the washing process was not totally effective, since the treatment was able to induce alterations in the composition of the olives.
2006
Focardi, S., S., R., S., M., A., T., D., L.S., D. G., C., et al. (2006). ToF-SIMS and PCA studies of Seggianese olives and olive oil. COLLOIDS AND SURFACES. A, PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 279, 225-232 [10.1016/j.colsurfa.2006.01.003].
File in questo prodotto:
File Dimensione Formato  
161 Colloids Surfaces A 2006.pdf

non disponibili

Tipologia: Post-print
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 205.34 kB
Formato Adobe PDF
205.34 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/33963
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo