organic status authentication (1)

4273790207?profile=RESIZE_710xThis pilot study used SIRA (stable isotope ration analysis) and trace element analysis to verify the organic status of pork purchased in the markets from four different regions of China. Four stable isotope ratios (δ13C, δ15N, δ2H and δ18O) and the concentrations of seven elements (K, Na, Mg, Ca, Fe, Cu and Se) were determined in organic and conventional pork samples from the four locations of China. Principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA) were used to analyse stable isotope ratios and multi-element concentrations in pork. Discrimination between the organic and conventionally reared pigs was based mainly on δ15N as the marker for organic feedstuffs. Using the limited database of analytical values, the methodology would potentially be able to confirm whether a sample of pork came from the region and organic status it claimed. 

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