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Delta 18O measurements in water for detection of sugar beet-derived syrups in frozen concentrated orange juice: collaborative study






Journal of AOAC International 75(6): 1107-1111

Delta 18O measurements in water for detection of sugar beet-derived syrups in frozen concentrated orange juice: collaborative study

Stable isotope ratio mass spectrometry showed that pure frozen concentrated (63-67 degrees Bx) orange juices (FCOJ) possess a mean delta 18O value of +14.28%0, with a standard deviation of 1.80. Beet invert syrups, which are produced using groundwater, possess negative values. Hence alpha 18O values decrease upon addition of such syrups to FCOJ. Samples with values less than +8.9%0 (3 standard deviations from the mean for pure FCOJs) can confidently be considered as adulterated.

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Accession: 002549350



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