In this paper, we report on the design, fabrication and characterization of a low cost, portable detection system able to quantify, in a rapid and reliable way, the contamination level of Ochratoxin A (OTA) in red wine. The operating principle is the real-Time monitoring of the natural fluorescence of OTA molecules during a chromatographic run on a thin layer chromatographic plate. The fluorescence is detected by an array of amorphous silicon photosensors whose photocurrents are directly proportional to the amount of OTA molecules present in the sample under analysis. By comparison with a reference sample the system is able to determine if the OTA contamination level is below or above the limit law for each food commodity. The system performances have been verified in real matrices analyzing several samples extracted from red wines obtaining a minimum detectable quantity of 0.2ng. © 2017 IEEE.

Portable detection system for Ochratoxin A by real time chromatography and a-Si:H photodiodes

Scipinotti, R.
2017-01-01

Abstract

In this paper, we report on the design, fabrication and characterization of a low cost, portable detection system able to quantify, in a rapid and reliable way, the contamination level of Ochratoxin A (OTA) in red wine. The operating principle is the real-Time monitoring of the natural fluorescence of OTA molecules during a chromatographic run on a thin layer chromatographic plate. The fluorescence is detected by an array of amorphous silicon photosensors whose photocurrents are directly proportional to the amount of OTA molecules present in the sample under analysis. By comparison with a reference sample the system is able to determine if the OTA contamination level is below or above the limit law for each food commodity. The system performances have been verified in real matrices analyzing several samples extracted from red wines obtaining a minimum detectable quantity of 0.2ng. © 2017 IEEE.
2017
9781509067060
thin layer chromatography;Ochratoxin A;analytical system;Amorphous silicon;photosensors
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/20.500.12079/3843
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
social impact