Laursen, K.H.; Mihailova, A.; Kelly , S.D.; Epov, V.N.; Berail, S.; Schjoerring, J.K.; Donard, O.F.X.; Larsen, E.H.; Pedentchouck, N.; Marca-Bell, A.D.; Halekoh, U.; Olesen, Jørgen E. and Husted, S. (2013) Is it really organic? - multi-isotopic analysis as a tool to discriminate between organic and conventional plants. Food Chemistry, 141, pp. 2812-2820.
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Novel procedures for analytical authentication of organic plant products are urgently needed. Here we present the first study encompassing stable isotopes of hydrogen, carbon, nitrogen, oxygen, magnesium and sulphur as well as compound-specific nitrogen and oxygen isotope analysis of nitrate for discrimination of organically and conventionally grown plants. The study was based on wheat, barley, faba bean and potato produced in rigorously controlled long-term field trials comprising 144 experimental plots. Nitrogen isotope analysis revealed the use of animal manure, but was unable to discriminate between plants that were fertilized with synthetic nitrogen fertilizers or green manures from atmospheric nitrogen fixing legumes. This limitation was bypassed using oxygen isotope analysis of nitrate in potato tubers, while hydrogen isotope analysis allowed complete discrimination of organic and conventional wheat and barley grains. It is concluded, that multi-isotopic analysis has the potential to disclose fraudulent substitutions of organic with conventionally cultivated plants.
| EPrint Type: | Journal paper |
|---|---|
| Subjects: | "Organics" in general Farming Systems Crop husbandry Knowledge management > Education, extension and communication > Technology transfer Values, standards and certification Food systems Knowledge management > Education, extension and communication |
| Research affiliation: | European Union > CORE Organic > CORE Organic II > AuthenticFood Denmark > KU - University of Copenhagen |
| Horizon Europe or H2020 Grant Agreement Number: | 249667 |
| DOI: | 10.1016/j.foodchem.2013.05.068 |
| Deposited By: | Holst Laursen, Assis Prof Kristian |
| ID Code: | 22891 |
| Deposited On: | 09 Aug 2013 08:48 |
| Last Modified: | 09 Aug 2013 08:48 |
| Document Language: | English |
| Status: | Published |
| Refereed: | Peer-reviewed and accepted |
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Is it really organic? - multi-isotopic analysis as a tool to discriminate between organic and conventional plants. (deposited 28 May 2013 06:11)
- Is it really organic? - multi-isotopic analysis as a tool to discriminate between organic and conventional plants. (deposited 09 Aug 2013 08:48) [Currently Displayed]
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