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geographical origin (2)

Honey is the third most adulterated food globally. This study by Australian researchers examined 100 honey samples from Australia (mainland and Tasmania) along with 18 other countries covering Africa, Asia, Europe, North America and Oceania. Carbon isotopic analyses of honey and protein showed that 27% of commercial honey samples tested were of questionable authenticity. The remaining 69 authentic samples were subject to trace element analysis for geographic determination, and were analysed chemometrically. The trace elements Sr, P, Mn and K were the most useful ones to differentiate honey according to its geographic origin. The findings show the common and prevalent issues of honey authenticity and the mislabelling of its geographic origin can be identified using a combination of stable carbon isotopes and trace element concentrations.

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This paper reviews the use of SIRA of biological isotopes (H, C, O, N, S) in determining geographical origin for meat, poultry and dairy products, and production origin for seafood (wild or farmed). 

Read the full paper at : http://onlinelibrary.wiley.com/doi/10.1111/1541-4337.12219/full

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