Wine authentication is vital in identifying malpractice and fraud, and various physical and chemical analytical techniques have been employed for this purpose. Besides wet chemistry, these include chromatography, isotopic ratio mass spectrometry, optical spectroscopy and nuclear magnetic resonance (NMR) spectroscopy, which have been applied in recent years in combination with chemometric approaches. For many years, 2H NMR spectroscopy was the method of choice and achieved official recognition in the detection of sugar addition to grape products. Recently, 1H NMR spectroscopy, a simpler and faster method (in terms of sample preparation), has gathered more and more attention in wine analysis, even if it still lacks official recognition. This technique makes targeted quantitative determination of wine ingredients and non-targeted detection of the metabolomic fingerprint of a wine sample possible. This review summarizes the possibilities and limitations of 1H NMR spectroscopy in analytical wine authentication, by reviewing its applications as reported in the literature. Examples of commercial and open source solutions combining NMR spectroscopy and chemometrics are also examined herein, together with its opportunities of becoming an official method.

Solovyev, P.; Fauhl-Hassek, C.; Riedl, J.; Esslinger, S.; Bontempo, L.; Camin, F. (2021). NMR spectroscopy in wine authentication: an official control perspective. COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY, 20 (2): 2040-2062. doi: 10.1111/1541-4337.12700 handle: http://hdl.handle.net/10449/64939

NMR spectroscopy in wine authentication: an official control perspective

Solovyev, P.
Primo
;
Bontempo, L.;Camin, F.
Ultimo
2021-01-01

Abstract

Wine authentication is vital in identifying malpractice and fraud, and various physical and chemical analytical techniques have been employed for this purpose. Besides wet chemistry, these include chromatography, isotopic ratio mass spectrometry, optical spectroscopy and nuclear magnetic resonance (NMR) spectroscopy, which have been applied in recent years in combination with chemometric approaches. For many years, 2H NMR spectroscopy was the method of choice and achieved official recognition in the detection of sugar addition to grape products. Recently, 1H NMR spectroscopy, a simpler and faster method (in terms of sample preparation), has gathered more and more attention in wine analysis, even if it still lacks official recognition. This technique makes targeted quantitative determination of wine ingredients and non-targeted detection of the metabolomic fingerprint of a wine sample possible. This review summarizes the possibilities and limitations of 1H NMR spectroscopy in analytical wine authentication, by reviewing its applications as reported in the literature. Examples of commercial and open source solutions combining NMR spectroscopy and chemometrics are also examined herein, together with its opportunities of becoming an official method.
Food analysis
Food fraud
Metabolomics
Nuclear Magnetic Resonance (NMR)
Wine
Settore CHIM/01 - CHIMICA ANALITICA
2021
Solovyev, P.; Fauhl-Hassek, C.; Riedl, J.; Esslinger, S.; Bontempo, L.; Camin, F. (2021). NMR spectroscopy in wine authentication: an official control perspective. COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY, 20 (2): 2040-2062. doi: 10.1111/1541-4337.12700 handle: http://hdl.handle.net/10449/64939
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