Journal of Food Processing & Technology

Added value of authentic food: Rapid quality and authenticity testing by fully-automated 1H-NMR

6^th Global Summit and Expo on Food & Beverages

August 03-05, 2015 Orlando-FL, USA

M Link, M Spraul, H Schaefer, F Fang and B Schuetz

Posters-Accepted Abstracts: J Food Process Technol

Abstract:

Fully-automated high resolution 1H-NMR (400 MHz) has found its way into the quality control of food and beverages over the last years. Its advantage is absolute reproducibility and transferability (user-, instrument- and laboratory-independent), which is not equaled by other methods currently used in food analysis. NMR reproducibility allows statistical investigations e.g. for detection of variety, geographical origin and adulterations, where smallest changes of many ingredients at the same time must be recorded. Sample preparation, measurement and processing are based on strict standard operation procedures which are substantial for this fully automated solution. The non-targeted approach to the data allows detecting even unknown deviations, if they are visible in the 1H-NMR spectra of e.g. fruit juice, wine, edible oils or honey. The same data acquired in high throughput mode are also subjected to quantification of multiple compounds. The fully automated 1H-NMR methodology will shortly be introduced and then results on fruit juices, wine and edible oils will be presented and the advantages of the fully automated 1H-NMR solutions shown. The method has been proven on fruit juices and wine, where so far unknown frauds could be detected. In addition conventional targeted parameters are obtained in the same analysis. This technology has additionally the advantage that NMR is completely quantitative and concentration calibration only has to be done once for all compounds.