Centro de Investigaciones y Transferencia de Santiago del Estero (CITSE-CONICET), Universidad Nacional de Santiago del Estero (UNSE), Santiago del Estero, Argentina.
J Sci Food Agric. 2018 Jul;98(9):3409-3415. doi: 10.1002/jsfa.8852. Epub 2018 Feb 20.
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.
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, β-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.
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. © 2017 Society of Chemical Industry.
蜂胶是一种复杂的混合物，由蜜蜂从各种植物的分泌物中产生，具有许多药用特性。其化学成分根据每个地区的植物区系特征等因素而有所不同。本研究的目的是鉴定和表征委内瑞拉蜂胶中的挥发性有机化合物（VOCs），并与巴西和阿根廷蜂胶等参考样本进行比较。
使用固相微萃取和动态顶空（DHS）技术，对一系列蜂胶样品进行分析，共鉴定出 90 种 VOCs。在委内瑞拉蜂胶中，鉴定出了倍半萜、酯类、芳香族化合物和脂肪族烃类。仅在委内瑞拉样品中发现了柠檬烯，这是首次在该国样品中鉴定出该物质。在绿蜂胶中，β-石竹烯和橙花叔醇是主要化合物。至于阿根廷样品，仅在这些样品中检测到乙酸戊烯酯、乙酸苄酯和乙酸 2-苯乙酯。
使用 DHS 提取技术检测到了可能作为天然来源的化学标志物，如柠檬烯。还首次在委内瑞拉蜂胶中鉴定出了几种化合物。聚类分析将蜂胶 VOCs 图谱与其来源相关联。© 2017 英国化学学会。
