naa a22 4500 510725759 CHVBK 20180411082934.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11947-012-0930-6 doi (NATIONALLICENCE)springer-10.1007/s11947-012-0930-6 PTR-ToF-MS, A Novel, Rapid, High Sensitivity and Non-Invasive Tool to Monitor Volatile Compound Release During Fruit Post-Harvest Storage: The Case Study of Apple Ripening [Elektronische Daten] [Christos Soukoulis, Luca Cappellin, Eugenio Aprea, Fabrizio Costa, Roberto Viola, Tilmann Märk, Flavia Gasperi, Franco Biasioli] In the present study, the potential of PTR-ToF-MS for addressing fundamental and technical post-harvest issues was tested on the non-destructive and rapid monitoring of volatile compound evolution in three apple cultivars (‘Golden Delicious', ‘Braeburn' and ‘Gold Rush') during 25days of post-harvest shelf life ripening. There were more than 800 peaks in the PTR-ToF-MS spectra of apple headspace and many of them were associated with relevant compounds. Besides the ion produced upon proton transfer, we used the ion at mass 28.031 (C2H 4 + ) produced by charge transfer from residual O 2 + as a monitor for ethylene concentration. ‘Golden Delicious' apples were characterised by higher ethylene emission rates than ‘Gold Rush' and ‘Braeburn', and quantitative comparison has been supported by two segment piecewise linear model fitting. Ester evolution during post-harvest ripening is strongly dependent on endogenous ethylene concentration levels. For ‘Golden Delicious' and ‘Braeburn', sesquiterpenes (alpha-farnesene) exhibited a fast response to ethylene emission followed by a rapid decline after the endogenous ethylene maximum peak. Carbonyl compounds displayed a different time evolution as compared to esters and terpenes and did not show any evident relationship with ethylene. Methanol and ethanol concentrations during the entire storage period did not change significantly. We show how multivariate analysis can efficiently handle the large datasets produced by PTR-ToF-MS and that the outcomes obtained are in agreement with the literature. The different volatile compounds could be simultaneously monitored with high time resolution, providing advantages over the more established techniques for the investigation of VOC dynamics in fruit post-harvest storage trials. Springer Science+Business Media, LLC, 2012 PTR-ToF-MS nationallicence Volatile compounds nationallicence Apple ( Malus × domestica ) nationallicence Climacteric post-harvest ripening nationallicence Soukoulis Christos Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut Cappellin Luca Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut Aprea Eugenio Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut Costa Fabrizio Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut Viola Roberto Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut Märk Tilmann Institut für Ionenphysik und Angewandte Physik, Leopold-Franzens Universität Innsbruck, Technikerstr. 25, 6020, Innsbruck, Austria aut Gasperi Flavia Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut Biasioli Franco Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut Food and Bioprocess Technology Springer US; http://www.springer-ny.com 6/10(2013-10-01), 2831-2843 1935-5130 6:10<2831 2013 6 11947 https://doi.org/10.1007/s11947-012-0930-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11947-012-0930-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Soukoulis Christos Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut NATIONALLICENCE 700 1- Cappellin Luca Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut NATIONALLICENCE 700 1- Aprea Eugenio Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut NATIONALLICENCE 700 1- Costa Fabrizio Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut NATIONALLICENCE 700 1- Viola Roberto Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut NATIONALLICENCE 700 1- Märk Tilmann Institut für Ionenphysik und Angewandte Physik, Leopold-Franzens Universität Innsbruck, Technikerstr. 25, 6020, Innsbruck, Austria aut NATIONALLICENCE 700 1- Gasperi Flavia Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut NATIONALLICENCE 700 1- Biasioli Franco Research and Innovation Centre, Foundation Edmund Mach, via Mach 1, San Michele all' Adige, TN, Italy aut NATIONALLICENCE 773 0- Food and Bioprocess Technology Springer US; http://www.springer-ny.com 6/10(2013-10-01), 2831-2843 1935-5130 6:10<2831 2013 6 11947 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer