Multi-stable isotope analysis as a tool for assessing the geographic provenance of dairy products: A case study using buffalo's milk and cheese samples from the Amazon basin, Brazil

Stable isotope analysis of carbon and nitrogen (bulk samples), and oxygen and hydrogen (water samples) of buffalo's milk and cheese samples from the Marajó Island, Amazon, Brazil, was conducted. This pilot study, the first of its kind in Brazil, provides a preliminary isotope database for Marajó's dairy products. From this, a comparison with dairy products from other areas within the country and worldwide can be drawn, to assess the usefulness of this tool in the geographic characterization of dairy products with a high regional appeal, such as those from the Amazon.