Tree barks are rich in extractive compounds, among which the flavonoids are considered as products of interest. Due to the increase in the demand for these natural products, the development of efficient and sustainable extraction processes is needed. This work aimed to study the selective extraction of flavonoids from Larix decidua bark using an environmentally friendly process. For this purpose, different extraction techniques as well as different solvents were used in order to achieve the highest flavonoid content. The characterisation results revealed improvements in extraction yield not only with the use of intensification processes, but also with the use of ionic liquids as solvents with a proven selectivity for flavonoids. [C₄C₁im]Br and [C₄C₁im][BF₄] considerably improved the total flavonoid content in comparison with the other extraction methods. The antioxidant capacities of all the extracts obtained were very high, confirming their potential for different applications. The [C₄C₁im]Br (25 wt%) was selected as the best solvent not only because of its good flavonoid extraction ability, but also because of the good antioxidant properties of the extract, and simultaneous microwave-ultrasound assisted extraction was the most energy saving process.

树皮富含提取化合物，其中黄酮类化合物被视为目标产品。由于对这些天然产物的需求增加，需要开发有效且可持续的提取方法。这项工作旨在研究使用环境友好的方法从落叶松落叶树皮中选择性提取类黄酮。为此，使用了不同的提取技术以及不同的溶剂，以实现最高的类黄酮含量。表征结果表明，不仅通过使用强化工艺，而且通过使用离子液体作为溶剂，对黄酮类化合物具有公认的选择性，萃取率都有所提高。[C ₄ C ₁ im] Br和[C与其他提取方法相比，₄ C ₁ im] [BF ₄ ]显着提高了总黄酮含量。获得的所有提取物的抗氧化能力都很高，证实了它们在不同应用中的潜力。选择[C ₄ C ₁ im] Br（25 wt％）作为最佳溶剂，不仅是因为其具有良好的类黄酮提取能力，而且还因为提取物具有良好的抗氧化性能，并且同时进行了微波超声辅助提取最节能的过程。