Differentiation of Geographic Origin of South African Wines from Austrian Wines by IRMS and SNIF-NMR
- Author(s)
- Micha Horacek, Helene Nieuwoudt, Florian F. Bauer, Bahareh Bagheri, Mathabatha E. Setati
- Abstract
Geographic origin and terroir are very important parameters for wine and significantly impact price. Incorrect declarations are known to occur intentionally to increase profit, thus, measures for control are required. Accompanying paperwork has been shown to be unreliable, thus, control of the product itself is required. Here we investigate and compare the stable isotope pattern of South African (Western Cape Province) wine, and evaluate its potential for discrimination from Central European/Austrian wine. The results show that the isotope values of the investigated South African wine samples differ significantly from the values of average Austrian (Central European) wines. Thus, a differentiation of the products from these two regions by stable isotope analysis is generally straightforward. However, the data suggest that vintages from years with exceptionally hot and dry summer weather in Europe may reduce the differentiation between these regions. Therefore, this method is a potent tool for the discrimination of Austrian (Central European) and South African wines under current climatic conditions, although drier and hotter summer weather in Europe, which is likely to occur more frequently due to global climate change, may require further method adjustments in the future.
- Organisation(s)
- Department of Geography and Regional Research, Department of Lithospheric Research
- External organisation(s)
- Stellenbosch University, South African Grape and Wine Research Institute
- Journal
- Foods
- Volume
- 12
- ISSN
- 2304-8158
- DOI
- https://doi.org/10.3390/foods12061175
- Publication date
- 03-2023
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105105 Geochemistry
- Keywords
- ASJC Scopus subject areas
- Food Science, Microbiology, Health(social science), Health Professions (miscellaneous), Plant Science
- Sustainable Development Goals
- SDG 13 - Climate Action
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/bd8a8d9d-753e-4d85-ae9f-aba7fda9fdaf