Liquid state 1H high field NMR in food analysis

The increasing interest towards application of NMR in food science is revealed both by the constantly increasing number of papers and reviews on this topic and by international and national congresses dedicated to this field. The strength of the H metabolomic approach is the capacity to look at all the components of a mixture at once allowing a metabolite quantitative analysis and thus generating many data from which it is necessary to extract the required information. The application of chemometric methods can reduce the dimension of the NMR data identifying possible patterns among samples. Relative deuterium concentration and specific deuterium-site locations have also been determined in other alcoholic beverages, fruit juices, aromas and perfumes, fats and oils, milk, and drug. Metabolic profiling requires identification and quantification of a number of selected metabolites, belonging to various classes of compounds, in a given sample often without a separation procedure.