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Primary flavonoids in marigold dye: extraction, structure and involvement in the dyeing process

机译：万寿菊染料中的主要类黄酮：提取，结构和参与染色过程

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Flavonoids extracted from marigold flowers were investigated for their dyeing potential. Patulitrin (1) and patuletin (2) were isolated and their structures established using NMR and HPLC-MS. These compounds were identified as the main flavonoids present in the dyeing bath. Following the dyeing process, it was demonstrated that aglycone 2 bound more strongly to wool fibres than its glucoside 1. Moreover, analysis focused on 1 and 2 dynamics during plant growth revealed that these components were only found in flowers during and after flowering. The influence of growing location was also investigated and it appeared that cultivation under Mediterranean conditions enhanced biosynthesis of 1 and 2 . Finally, several solvents were tested for their potential to extract the flavonoids: the use of a water-ethanol mixture gave a high extraction efficiency and allowed selective extraction of 1 and 2. The implications of these results are discussed in relation to the development of marigold as a potential dyeing plant. Copyright pb 2007 John Wiley & Sons, Ltd.
机译：研究了从万寿菊花中提取的黄酮类化合物的染色潜力。分离了Patulitrin（1）和patuletin（2），并使用NMR和HPLC-MS建立了结构。这些化合物被确定为染色浴中存在的主要类黄酮。在染色过程之后，证明了糖苷配基2与羊毛纤维的结合比其糖苷1更牢固。此外，针对植物生长过程中1和2动态的分析表明，这些成分仅在开花期间和开花后才发现。还研究了种植地点的影响，并发现在地中海条件下的种植增强了1和2的生物合成。最后，测试了几种溶剂提取类黄酮的潜力：使用水-乙醇混合物可实现较高的提取效率，并可以选择性提取1和2。讨论了这些结果与万寿菊开发的关系。作为潜在的染色工厂。版权所有pb 2007 John Wiley＆Sons，Ltd.

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