Approaches to Extracting Bioactive Compounds from Bark of Various Plants: A Brief Review

In recent years, focus has been directed toward studying lignocellulosic matter, such as forestry by-products, due to their high therapeutic potential offered by various bioactive compounds, mainly phenolic compounds. To obtain extracts rich in these phytochemicals, suitable extraction methods must be employed, and a thorough understanding of these methods is necessary. This work concentrates on describing both classical and modern extraction techniques, highlighting their mechanisms as well as their key advantages and disadvantages. It was observed that a wide variety of extraction methods are currently used for bark, emphasizing the importance of method optimization to achieve higher yields of phytochemicals valuable for their biological activities.