Abstract
Food fraud detection technology based on stable isotope ratio measurement using laser gas sensing is
described. Hydrogen isotope ratio and oxygen isotope ratio have correlation with the latitude of the
place where the farm products have grown, and they can be clue to detect the false designation of the origin.
Carbon isotope ratio can be used to estimate the addition of the sugar obtained from sugar cane or
corn, and it can be clue to detect false designation of ingredients. Since laser gas sensing measurement
requires much less techniques or experience than the measurement using conventional mass spectroscopy
equipment, it has a potential of being utilized for the verification of authenticity in the middle of supply
chain.
