Determining the Geographical Origin of Wine: A Short Survey of Methods and Insights

Determining the origin of wine is crucial for protecting consumers from fraud, promoting fair trade, and preserving the integrity of wine regions. Therefore, this paper discusses various techniques used for attributing the origin of wine, with particular attention to their strengths and weaknesses. Combining data from multiple analytical techniques – such as isotopic analysis and elemental profiling – with advanced methods including chemometrics, bioinformatics, and geographic information systems (GIS), it is expected to obtain detailed ‘fingerprints’ of wine. However, to develop reliable origin markers, it is necessary to consider the effects of various factors – such as harvest timing, environmental background, and winemaking procedures – on wine composition. This is one of the situations where fast, affordable, and portable analytical approaches gain particular relevance for routine monitoring across the wine supply chain. While reliable methods with such characteristics to tackle wine fraud and safeguard consumer rights, as well as the credibility of the wine market seem scarce, research in wine origin requires focusing on holistic approaches that can handle variability, cover more regions – even the ones receiving less attention for completing databases for region-specific authentication – and prevent or detect fraud, contributing to conserve the reliance on the sector.