安定同位体比分析による国産及び輸入リンゴ果汁の原産国判別の可能性

概要

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Carbon and oxygen stable isotope ratios of plants reflect their growing environment. In this study, we examined the carbon and oxygen stable isotope ratios of apple juice from Japan, China, Australia, and South Africa, in order to confirm them as a potential index for verifying the geographical origin of apple juice. Apple juice from Japan is characterized by lower carbon and oxygen isotope ratios {δ13C : −26.7 ± 1.0‰ (mean ± sd), δ18O : 20.3 ± 1.1‰} than those from other countries. Especially, the apple juice from China has a higher δ13C value (−24.6 ± 0.5‰), and those from Australia and South Africa have higher δ18O values (27.8 ± 1.6‰ and 29.4 ± 2.3‰, respectively). These results suggest that carbon and oxygen stable isotope ratios can be used as a potential index for discrimination between domestic and imported apple juice.
2009-12-05