Alcoholic drinks

wine, sparkling wine, beer, tequila, rum, vodka

 

Authenticity testing and geographical origin

Authentication of alcoholic drinks means being in compliance with legal regulations, which not only protects consumers but also respects the increasing and globalized market.

Producers and traders are in high interest in offering products of high quality and reliable authenticity. On a political and economic perspective, each wine producing country is interested in the fingerprint of their authentic and well reputed wines on an international market. The following points provide the necessary tools for securing the product’s added-value, against fraud and adulteration.

Fav-ImprintAnalytics   Geographical origin

Fav-ImprintAnalytics   Detection of added water

Fav-ImprintAnalytics   Detection of added tech. CO2 oder glycerol

Fav-ImprintAnalytics   Detection of added C4-sugar/ethanol

Fav-ImprintAnalytics   Detection of added C3-sugar/ethanol

Imprint analytics GmbH provides high quality accredited services, offering a competitive package of wine authenticity testing.

Geographical Origin

The relative 18O content of water in musts and wines profoundly reflects the geographic origin and the source area’s climatic conditions of these products. Furthermore, combined with the 2H, the geographic signature of the local water is imprinted into wine’s water isotopic composition. Traditionally, the above parameters are considered the most significant indicators of the grapes’ source area. To achieve high geographical resolution and credible results, Imprint Analytics uses its expertise and know-how to provide advanced customized origin testing by including more parameters, related to the wine type, grape variety, vintage year etc.

Detection of added water

Complying with the compendium of international methods of wine analysis (OIV) and in accordance with the official method OIV-MA-AS2-12 (Resolution OIV-Oeno 353/2009), Imprint Analytics combines the official method with internationally published data (Perini and Camin, 2013*), to provide a precise and comprehensive test by the analysis of oxygen isotopes (18O/16O) of wine water and wine ethanol and interpretation of the values. The test’s principle is that oxygen isotope ratios of wine water and ethanol are correlated by a linear relationship, which is independent of the wine’s origin, vintage year or grape variety. Thus, any foreign water added to the authentic sample causes a deviation from the above relationship. The analytical method comprises the oxygen isotopic analysis of the wine water and the wine ethanol, using Isotope Ratio Mass Spectrometry (IRMS).
*Perini, M. und Camin, F. (2013). Doi: 10.1111 / 1750-3841.12143

Detection of added tech. CO2 in sparkling wines

Complying with the compendium of international methods of wine analysis (OIV) and in accordance with the official method OIV-MA-AS314-03 (Resolution Oeno 7/2005), Imprint Analytics determines the stable carbon isotope ratio (13C/12C) of CO2 in sparkling wines. For several fermented products CO2 reflects the botanic origin of sugar from which the gas is originated. Regulations forbid the use of exogenous CO2 in certain semi sparkling and sparkling wines. The carbon isotope ratios provide clear proof of added CO2 in sparkling drinks. The analytical method comprises the carbon isotopic analysis of CO2 in sparkling wines by Isotope Ratio Mass Spectrometry (IRMS).

Detection of added glycerol

Complying with the compendium of international methods of wine analysis (OIV) and in accordance with the official method OIV-MA-AS312-07 (OIV-Oeno 343-2010), Imprint Analytics determines the 13C/12C isotope ratio of glycerol in wines. The measurement of the carbon-13 content of glycerol may enable possible detection of additional glycerol from e.g. maize (C4 plant) or from synthesis (fossil sources) to wines or to spirit drinks. The method includes the techniques of High Performance Liquid Chromatography (HPLC) and Isotopic Ratio Mass Spectrometry (IRMS).

Detection of added C4-sugar/ethanol

Complying with the compendium of international methods of wine analysis (OIV) and in accordance with the official method OIV-MA-AS312-06 (Oeno 17/2001), Imprint Analytics determines the carbon isotopic ratio (13C/12C) of wine ethanol. Plants such as sugar cane and corn belong to the C4 metabolic pathway. Measuring the carbon-13 content enables the detection of C4 (sugar cane or corn isoglucose) origin of sugars or ethanol which are added to products deriving from grapes (grape musts, wines). The analytical method comprises the carbon isotopic analysis of the wine ethanol using Isotope Ratio Mass Spectrometry (IRMS).

Detection of added C3-sugar/ethanol

Complying with the compendium of international methods of wine analysis (OIV) and in accordance with the official method OIV-MA-AS311-05 (Oeno 426-2011), Imprint Analytics determines the deuterium distribution in wine ethanol by application of Nuclear Magnetic Resonance (SNIF-NMR©). Plants such as sugar beet and many cereals belong to the C3 metabolic pathway, similar to the grapes. Measuring the deuterium distribution enables the detection of C3 origin of sugars or ethanol which are added to products deriving from grapes (grape musts, wines). The method enables measurement of the site-specific deuterium isotope ratios (D/H) in wine ethanol and ethanol obtained by fermentation of products of the vine (musts, concentrated musts, rectified concentrated musts).

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