| Title: | Strategies for Accurate Quantitation of Volatiles from Foods and Plant-Origin Materials: A Challenging Task |
| Author(s): | Sgorbini B; Cagliero C; Liberto E; Rubiolo P; Bicchi C; Cordero C; |
| Address: | "Dipartimento di Scienza e Tecnologia del Farmaco , Universita di Torino , Turin , Italy" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "The volatile fraction of foods and of plant-origin materials provides functional information on sample-related variables, and gas-phase extractions are ideal approaches for its accurate chemical characterization. However, for gas-phase sampling, the usual procedures adopted to standardize results from solvent extraction methods are not appropriate: headspace (HS) composition depends on the intrinsic physicochemical analyte properties (volatility, polarity, partition coefficient(s)) and matrix effects. Method development, design, and expression of the results are therefore challenging. This review article focuses on volatile vapor-phase quantitation methods (internal standard normalization, standard addition, stable isotope dilution assay, multiple headspace extraction) and their suitability in different applications. Because of the analyte informative role, the different ways of expressing results (normalized chromatographic area, percent normalized chromatographic areas, and absolute concentrations) are discussed and critically evaluated with examples of quality markers in chamomile, process contaminants (furan and 2-methylfuran) in roasted coffee, and key-aroma compounds from high-quality cocoa" |
| Keywords: | Gas Chromatography-Mass Spectrometry/*methods/standards Plant Extracts/*analysis Plants/*chemistry Solid Phase Microextraction/*methods/standards Volatile Organic Compounds/*analysis accurate quantitation of volatiles food volatiles gas chromatography-mas; |
| Notes: | "MedlineSgorbini, Barbara Cagliero, Cecilia Liberto, Erica Rubiolo, Patrizia Bicchi, Carlo Cordero, Chiara eng Review 2019/01/16 J Agric Food Chem. 2019 Feb 13; 67(6):1619-1630. doi: 10.1021/acs.jafc.8b06601. Epub 2019 Jan 30" |
