EXPERIMENTAL RESEARCH ON THE EXTRACTION OF POLYPHENOLS FROM NETTLE, LAVENDER AND SAGE USING THE PERCOLATION METHOD

This article presents the results of experimental research on the extraction of polyphenols from nettle, lavender, and sage using the percolation method. This technique is recognized for its efficiency in extracting bioactive compounds from plants. Polyphenols are a group of natural chemical compounds characterized by the presence of multiple phenolic groups in their molecular structure. They are predominantly found in plants and are recognized in various industries, including agriculture, for their antioxidant, antimicrobial, and antifungal properties. The antioxidant capacity of the extracts from nettle, lavender, and sage refers to the ability of these extracts to neutralize free radicals. The concentrations of polyphenols in the obtained extracts were measured using the Folin-Ciocalteu spectrophotometric method. The impact of pressure on total polyphenol content varied by plant species. Sage showed increased polyphenol content at higher pressures, indicating more efficient extraction with the proposed technology.