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Nanjing, China

Fei X.,Laporatory of Food | Wu B.,Laporatory of Food | Sehn C.,Laporatory of Food | Ding T.,Laporatory of Food | And 2 more authors.
Chinese Journal of Chromatography (Se Pu) | Year: 2011

A new method for honey adulteration detection using liquid chromatography/elemen-tal analysis-isotope ratio mass spectrometry (LC/EA-IRMS) was developed. Based on the individual δ 13C values detected for 38 authentic honey samples, the limits for the authentic honey samples were proposed1 the δ 13C difference between protein and honey (Δδ 13C P-H) should be higher or equal to than -0. 95‰, the δ 13C difference between fructose and glucose (Δδ 13C F-G) should be from -0. 64‰ to 0. 53 ‰, and the maximum difference of δ 13C values between all the components (Δδ 13C max) should be lower than 2. 09‰. Based on the above criteria, the 58 positive samples spiked with C4 or C3 plant sugar syrup were confirmed by LC/EA-IRMS method from 150 commercial honey samples, while only 7 samples spiked with C4 plant sugar syrup were confirmed by the official EA-IRMS method. The proposed method represents a significant improvement in comparing with the official EA-IRMS method. Source

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