• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Biomedical Chromatography: An International Journal Devoted to Research in Chromatographic Methodologies and Their Applications in the Biosciences >GC-MS analysis of penta- and tetra-cyclic triterpenes from resins of Pistacia species. Part I. Pistacia lentiscus var. Chia.
【24h】

GC-MS analysis of penta- and tetra-cyclic triterpenes from resins of Pistacia species. Part I. Pistacia lentiscus var. Chia.

机译：GC-MS分析黄连木种树脂中的五环和四环三萜。第一部分：黄连木变种。嘉

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Pistacia species contain oleoresins with bioactive triterpenes. In this study triterpenes, including minor components, were identified and quantified in both neutral and acidic fraction of Pistacia lentiscus var. Chia resin, grown exclusively in Chios island (Greece), collected traditionally, as well as by the use of stimulating agents (liquid collection). It was proved that these two resin samples were composed of several different minor triterpenes. In the traditional collection of the resin, 36 triterpenes were identified, 23 of which are new minor compounds (five in the acidic and eighteen in the neutral fraction). In the liquid collection resin eight compounds were identified in the acidic and 11 in the neutral fraction, while seven compounds were not contained in resin traditionally collected. The main triterpenes in both resin samples collected traditionally and by use of stimulating agents were in the following order: isomasticadienonic acid (24 and 22.5% w/w of triterpenic fraction respectively), masticadienonic acid (9.3 and 14.7% w/w of triterpenic fraction) and 28-norolean-17-en-3-one (19 and 36% w/w of triterpenic fraction respectively). The aim of this study was to compare the qualitative and quantitative composition of triterpenes in the resin samples collected using the traditional and new liquid techniques, and examine whether the collection technique influences the contained triterpenes in P. lentiscus var. Chia resin samples. Finally, since there is confusion on interpreting mass spectra of triterpenes we present an analytical review on the base peaks, main fragments and fragmentation mechanism/pattern of several skeleton penta- and tetra- cyclic triterpenes reported in P. lentiscus resin. Also, a biosynthetic route for triterpene skeletons contained in P. lentiscus resin was approached.
机译：黄连木种类包含含生物活性三萜的油性树脂。在这项研究中，三萜类化合物（包括次要成分）在黄连木的中性和酸性成分中均得到鉴定和定量。传统上以及通过使用刺激剂（液体收集）来收集仅在希俄斯岛（希腊）上生长的奇亚树脂。证明这两个树脂样品由几种不同的次要三萜组成。在传统的树脂系列中，鉴定出36种三萜，其中23种是新的次要化合物（酸性成分为5种，中性成分为18种）。在液体收集树脂中，在酸性物质中鉴定出8种化合物，在中性馏分中鉴定出11种，而传统收集的树脂中不含7种化合物。传统上和通过使用刺激剂收集的两种树脂样品中的主要三萜类化合物的顺序如下：异麦斯卡梯酸（三萜类组分分别为24和22.5％w / w），乳香二烯酸（三萜类组分分别为9.3和14.7％w / w） ）和28-norolean-17-en-3-one（三萜组分分别为19和36％w / w）。这项研究的目的是比较使用传统和新的液体技术收集的树脂样品中三萜的定性和定量组成，并研究收集技术是否影响扁豆中所含的三萜。正大树脂样品。最后，由于对三萜类化合物的质谱分析存在混淆，因此我们对扁豆假单胞菌树脂中报道的几种骨架五环和四环三萜类化合物的基本峰，主要片段以及断裂机理/模式进行了分析综述。另外，还研究了扁豆假单胞菌树脂中所含三萜骨架的生物合成途径。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号