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J Sci Food Agric

Title:		Comparative analysis of volatile compound profiles of propolis from different provenances
Author(s):		Mohtar LG; Rodriguez SA; Nazareno MA;
Address:		"Centro de Investigaciones y Transferencia de Santiago del Estero (CITSE-CONICET), Universidad Nacional de Santiago del Estero (UNSE), Santiago del Estero, Argentina"
Journal Title:		J Sci Food Agric
Year:		2018
Volume:		20180220
Issue:		9
Page Number:		3409 - 3415
DOI:		10.1002/jsfa.8852
ISSN/ISBN:		1097-0010 (Electronic) 0022-5142 (Linking)
Abstract:		"BACKGROUND: Propolis is a complex mixture that honey bees produce from the exudates of various plants and presents many medicinal properties. Its chemical composition varies according to the phytogeography characteristics of each region, among others. The aim of this study was to identify and characterize the volatile organic compounds (VOCs) present in Venezuelan propolis and compare with reference samples such as Brazilian and Argentinian propolis. RESULTS: A total of 90 VOCs were identified in a series of propolis samples using both solid-phase microextraction and dynamic headspace (DHS), both coupled to a gas chromatograph-electron ionization mass spectrometer. In the case of Venezuelan propolis, sesquiterpenes, esters, aromatic compounds, and aliphatic hydrocarbons were identified. Limonene was found only in Venezuelan samples, this being the first time it has been identified in samples from this country. In the case of green propolis, beta-caryophyllene and nerolidol were the major compounds. As for the Argentinian samples, prenyl acetate, benzyl acetate, and 2-phenylethyl acetate were detected only in these samples. CONCLUSIONS: Possible chemical markers of natural sources such as limonene were detected using DHS extraction. Several compounds have also been identified for the first time in Venezuelan propolis. Cluster analysis allowed the relating of the propolis VOCs profile to their provenance. (c) 2017 Society of Chemical Industry"
Keywords:		"Animals Argentina Bees Brazil Cyclohexenes/analysis Gas Chromatography-Mass Spectrometry/methods Limonene Propolis/*chemistry Sesquiterpenes/analysis Solid Phase Microextraction Spectrometry, Mass, Electrospray Ionization/methods Terpenes/analysis Venezue;"
Notes:		"MedlineMohtar, Lina G Rodriguez, Sergio A Nazareno, Monica A eng Comparative Study England 2017/12/28 J Sci Food Agric. 2018 Jul; 98(9):3409-3415. doi: 10.1002/jsfa.8852. Epub 2018 Feb 20"