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Molecules

Title:		Geographical Discrimination of Bell Pepper (Capsicum annuum) Spices by (HS)-SPME/GC-MS Aroma Profiling and Chemometrics
Author(s):		Reale S; Biancolillo A; Gasparrini C; Di Martino L; Di Cecco V; Manzi A; Di Santo M; D'Archivio AA;
Address:		"Dipartimento di Scienze Fisiche e Chimiche, Universita degli Studi dell'Aquila, Via Vetoio, 67100 L'Aquila, Italy. Majella Seed Bank-Parco Nazionale della Majella, Via Badia 28, 67039 Sulmona, Italy. Independent Researcher, 66010 Gessopalena, Italy"
Journal Title:		Molecules
Year:		2021
Volume:		20211013
Issue:		20
Page Number:		-
DOI:		10.3390/molecules26206177
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"Dried and ground red pepper is a spice used as seasoning in various traditional dishes all over the world; nevertheless, the pedoclimatic conditions of the diverse cultivation areas provide different chemical characteristics, and, consequently, diverse organoleptic properties to this product. In the present study, the volatile profiles of 96 samples of two different ground bell peppers harvested in diverse Italian geographical areas, Altino (Abruzzo) and Senise (Lucania), and a commercial sweet paprika, have been studied by means of headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). The investigation of their volatile profile has led to the identification of 59 analytes. Eventually, a discriminant classifier, Partial Least Squares Discriminant Analysis (PLS-DA), was exploited to discriminate samples according to their geographical origin. The model provided very accurate results in external validation; in fact, it correctly classified all the 30 test samples, achieving 100% correct classification (on the validation set). Furthermore, in order to understand which volatiles contribute the most at differentiating the bell peppers from the different origins, a variable selection approach, Variable Importance in Projection (VIP), was used. This strategy led to the selection of sixteen diverse compounds which characterize the different bell pepper spices"
Keywords:		Capsicum/*chemistry Discriminant Analysis Gas Chromatography-Mass Spectrometry/methods Geography Italy Odorants/*analysis Solid Phase Microextraction/methods Spices/*analysis Taste/physiology Volatile Organic Compounds/analysis Capsicum annum Gc-ms Hs-spm;
Notes:		"MedlineReale, Samantha Biancolillo, Alessandra Gasparrini, Chiara Di Martino, Luciano Di Cecco, Valter Manzi, Aurelio Di Santo, Marco D'Archivio, Angelo Antonio eng Switzerland 2021/10/24 Molecules. 2021 Oct 13; 26(20):6177. doi: 10.3390/molecules26206177"