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June 2024 (published: 18.06.2024)
Number 2(60)
Home > Issue > Authentication of grape seed oil by isotopic analysis of carbon 13C/12C EA-IRMS
Vasilyev V., Resnyanskaya Anna S.
Grape seed oil is a premium vegetable oil with high biological activity. The growing demand for the product and the expansion of the geography of supplies increase the risk of its falsification in terms of raw materials, method of production, and place of origin. The method of mass spectrometry of stable carbon isotopes (IRMS 13C/12C) is one of the most informative and often used to detect counterfeits of vegetable oils. The ratio of isotopes 13C/12C depends on the path of photosynthesis, generic and varietal composition, weather conditions, growing place. The indicator is defined for most vegetable oils, however, data on grape seed oil could not be found in the available literature. The article considers the possibility of using the EA-IRMS 13C/12C method for rapid detection of counterfeit oil. The ratio of 13C/12C isotopes for four commercially available grape oils was analyzed. The direct pressing grape oil provided by the Fanagoria ART was used as a control sample. The specimen is unquestionable in both the raw material and the region of origin. This product is obtained by direct pressing technology without the use of organic solvents. For this sample, a comparison was made between the isotopic carbon composition of the oil and the alcohol portion of the wine produced from the same batch of grapes. The study showed that the isotope ratio of 13C/12C for the reference sample was –27.87 (± 0.10). For other images, the range of values ranged from –28.03 to –28.86. The difference between oil and wine averaged 0.870/00 (0.77–0.970/00). The isotopic ratios of 13C/12C do not change over time and depend on the place of origin, grape cultivation conditions, and the method of oil production. The EA-IRMS method together with other analysis methods can be used to identify the authenticity of grape seed oil, including its geographical origin.
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Keywords: grape seed oil; authentication; isotope-ratio mass spectrometry; carbon isotope fractionation; place of origin
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
UDC 665.335.82
Authentication of grape seed oil by isotopic analysis of carbon 13C/12C EA-IRMS
Grape seed oil is a premium vegetable oil with high biological activity. The growing demand for the product and the expansion of the geography of supplies increase the risk of its falsification in terms of raw materials, method of production, and place of origin. The method of mass spectrometry of stable carbon isotopes (IRMS 13C/12C) is one of the most informative and often used to detect counterfeits of vegetable oils. The ratio of isotopes 13C/12C depends on the path of photosynthesis, generic and varietal composition, weather conditions, growing place. The indicator is defined for most vegetable oils, however, data on grape seed oil could not be found in the available literature. The article considers the possibility of using the EA-IRMS 13C/12C method for rapid detection of counterfeit oil. The ratio of 13C/12C isotopes for four commercially available grape oils was analyzed. The direct pressing grape oil provided by the Fanagoria ART was used as a control sample. The specimen is unquestionable in both the raw material and the region of origin. This product is obtained by direct pressing technology without the use of organic solvents. For this sample, a comparison was made between the isotopic carbon composition of the oil and the alcohol portion of the wine produced from the same batch of grapes. The study showed that the isotope ratio of 13C/12C for the reference sample was –27.87 (± 0.10). For other images, the range of values ranged from –28.03 to –28.86. The difference between oil and wine averaged 0.870/00 (0.77–0.970/00). The isotopic ratios of 13C/12C do not change over time and depend on the place of origin, grape cultivation conditions, and the method of oil production. The EA-IRMS method together with other analysis methods can be used to identify the authenticity of grape seed oil, including its geographical origin.
Read the full article
Keywords: grape seed oil; authentication; isotope-ratio mass spectrometry; carbon isotope fractionation; place of origin
DOI 10.17586/2310-1164-2024-17-2-10-18
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License