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A photoacoustic laser spectroscopy for quality and safety control of food samples

Agri-food chainApplication of QCLFood safetyLaser spectroscopyPhotoacustic tecnique


The patented technology is based on laser photoacoustic spectroscopy (LPAS) and provides real-time information on the composition of untreated samples with the collection of small quantities and is easily installed in industrial plants and / or cycles, even in hostile environments.

Technical features

Although the invention can be used with all phases of matter in the most varied application fields, it was developed for the quality and safety control of solid food samples, a sector in which fraud is increasingly occurring. In particular, a prototype for a production line and a prototype for fast analyses were developed. The latter is contained in a suitcase, is battery operated and ready to be evaluated by end-users. Currently, analyses are carried out with laboratory instruments that require qualified personnel and long times. Such devices are likely to remain unmatched in terms of sensitivity and specificity, especially when particularly low detection limits are required, but the photoacoustic laser system could be complementary, providing a quick indication that a supply is suspect.


Possible Applications

  • Agri-food sector;
  • Biomedical industry;
  • Chemical industry;
  • Pharmaceutical industry.


  • Real-time result
  • Virtually non-destructive technique
  • User friendly
  • Portability in the field (small size and battery operated)