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carbon isotope detection of c4 sugars (1)

The study was commissioned by the Honey Integrity Task Force, an organisation made up of representatives from the entire honey industry including importers, packers, producers, marketing cooperative members and an organisation that specialises in the honey supply chain. Two sample each of 30 honeys were collected from the top selling brands, accounting for approximately 40% of the honey sold in the U.S. retail market. The labels were masked and one set each were sent to two laboratories in Germany that specialise in honey testing, QSI and Intertek. Each lab conducted two adulteration tests, the AOAC-approved 998.12, 13C-Isotope Mass Spectrometry and 13C-IRMS (EA IRMS)/ +LC-IRMS method for C4/C3 adulteration.  Both tests are well recognised methods designed to determine if any sugars were added to the honey.The results on 28 of the samples confirmed that they were not adulterated. Two of samples tested as being "adulterated". One was an imitation honey made with maltitol syrup, and the other was a blended product with both corn syrup and honey, neither were labelled as pure honey.

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