Instituto de Farmacia y Alimentos (IFAL), Universidad de La Habana., La Lisa, Ciudad de La Habana, Cuba.
J Agric Food Chem. 2010 Apr 28;58(8):4725-30. doi: 10.1021/jf904527n.
In this study, on the basis of the information supplied by NMR and HPLC-PDA data, we reported a quali-quantitative GC-MS study of 19 yellow Cuban propolis (YCP) samples collected in different regions of Cuba. The profiles of YCP samples allowed us to define two main types of YCP directly related to their secondary metabolite classes: type A, rich in triterpenic alcohols and with the presence of polymethoxylated flavonoids as minor constituents, and type B, containing acetyl triterpenes as the main constituents. For the first time, triterpenoids belonging to oleanane, lupane, ursane, and lanostane skeletons were reported as major compounds in propolis. Also, the presence of polymethoxylated flavones or flavanones was found for the first time in propolis.
在这项研究中，基于 NMR 和 HPLC-PDA 数据提供的信息，我们报告了对在古巴不同地区采集的 19 个黄色古巴蜂胶（YCP）样本的 GC-MS 定性定量研究。YCP 样本的图谱使我们能够定义两种主要类型的 YCP，它们与次级代谢物类别直接相关：A 型，富含三萜醇，并且作为少量成分存在多甲氧基黄酮；B 型，主要成分是乙酰三萜。首次报道了属于齐墩果烷、羽扇豆烷、熊果烷和羊毛甾烷骨架的三萜类化合物作为蜂胶的主要成分。此外，还首次在蜂胶中发现了多甲氧基黄酮或黄烷酮的存在。
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