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New laser sensor to help combat counterfeit oil

Wednesday, December 26, 2018, 8:01 AM

Researchers have designed a-laser-based sensor that can detect counterfeit olive oil labelled as-extra-virgin or protected designation of origin. The tool, described in the journal Talanta, can distinguish between apparently similar oils that present notable differences in quality. This is possible thanks to use of laser diodes, because the fluorescence emitted by adulterated oils is slightly different to that of pure extra virgin olive oils.