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Extracellular Localization of the Diterpene Sclareol in Clary Sage (Salvia sclarea L. Lamiaceae)

机译:二萜香紫苏醇的胞外定位在快乐鼠尾草(快乐鼠尾草L.唇形科)

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摘要

Sclareol is a high-value natural product obtained by solid/liquid extraction of clary sage (Salvia sclarea L.) inflorescences. Because processes of excretion and accumulation of this labdane diterpene are unknown, the aim of this work was to gain knowledge on its sites of accumulation in planta. Samples were collected in natura or during different steps of the industrial process of extraction (steam distillation and solid/liquid extraction). Samples were then analysed with a combination of complementary analytical techniques (gas chromatography coupled to a mass spectrometer, polarized light microscopy, environmental scanning electron microscopy, two-photon fluorescence microscopy, second harmonic generation microscopy). According to the literature, it is hypothesized that sclareol is localized in oil pockets of secretory trichomes. This study demonstrates that this is not the case and that sclareol accumulates in a crystalline epicuticular form, mostly on calyces.
机译:香紫苏醇是通过对鼠尾草(Salvia sclarea L.)花序进行固/液萃取而获得的高价值天然产品。由于这种拉丹烷二萜的排泄和积累过程是未知的,因此这项工作的目的是获得有关其在植物中积累位置的知识。在自然条件下或在萃取的工业过程的不同步骤(蒸汽蒸馏和固/液萃取)中收集样品。然后使用互补分析技术(与质谱仪耦合的气相色谱仪,偏振光显微镜,环境扫描电子显微镜,双光子荧光显微镜,二次谐波显微镜)对样品进行分析。根据文献,假设香紫苏醇位于分泌性毛状体的油囊中。这项研究表明事实并非如此,香紫苏醇以晶体表皮形式积聚,主要在花萼上。

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