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首页> 外文期刊>Journal of natural products >Spectroscopic studies on bioactive polyacetylenes and other plant components in wild carrot root.
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Spectroscopic studies on bioactive polyacetylenes and other plant components in wild carrot root.

机译：野胡萝卜根中生物活性聚乙炔和其他植物成分的光谱研究。

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摘要

Polyacetylenes and other common plant components, such as starch, pectin, cellulose, and lignin, were studied in roots of the wild carrot (Daucus carota) subspecies D. carota subsp. gummifer and D. carota subsp. maximus by Raman spectroscopy. The components were measured in situ, directly in the plant tissue and without any preliminary sample preparation. The analysis was performed on the basis of the intense and characteristic key bands observed in the Raman spectrum. The two main carrot polyacetylenes falcarinol (1) and falcarindiol (2) have similar molecular structures, but their Raman spectra exhibit a small band shift in the symmetric -C identical-to C-C identical-to C- mode from 2258 cm-1 to 2252 cm-1. Quantum chemical calculations confirmed that the differences observed between the samples may be due to conformational and environmental changes. The polyacetylenes were also detected by Raman mapping, which visualized the distribution of the compounds across sections of carrot roots. The mapping technique was also applied to assess the distribution of lignin and polysaccharide compounds. The results showed the tissue-specific accumulation of starch and cell wall components such as lignin, pectin, and cellulose.
机译：在野胡萝卜（ Daucus carota ）亚种 D的根中研究了聚乙炔和其他常见的植物成分，例如淀粉，果胶，纤维素和木质素。 carota 子亚种。 gummifer 和 D。 carota 子亚种。拉曼光谱法的 maximus 。直接在植物组织中进行原位测定，无需任何初步的样品前处理。分析是根据在拉曼光谱中观察到的强烈和特征性的关键带进行的。两种主要的胡萝卜聚乙炔falcarinol（1）和falcarindiol（2）具有相似的分子结构，但它们的拉曼光谱在对称的-C相同-CC相同-CC相同-C-模式从2258 cm 至2252 cm -1 。量子化学计算证实，样品之间观察到的差异可能是由于构象和环境变化所致。聚乙炔也可以通过拉曼作图法检测，该图可以直观地看出化合物在整个胡萝卜根部的分布。该作图技术还用于评估木质素和多糖化合物的分布。结果显示淀粉和细胞壁成分如木质素，果胶和纤维素的组织特异性积累。

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