HYDROTHERMAL EXTRACTION: A PROMISING METHOD OF PHENOLIC ANTIOXIDANTS FROM RED OSIER DOGWOOD LEAVES AND STEMS

Аннотация

This research explores hydrothermal extraction as a sustainable and efficient technique for recovering phenolic antioxidants from red osier dogwood (Cornus sericea L.) leaves and stems. Red osier dogwood has attracted growing interest due to its rich profile of polyphenolic compounds, particularly in non-edible parts traditionally regarded as agricultural waste. The study aims to evaluate the effectiveness of hydrothermal extraction in isolating antioxidant compounds compared to conventional methods such as solvent extraction. The process parameters, including temperature, time, and water-to-solid ratios, are optimized to maximize phenolic yield. Chemical analysis of the extracts is performed using spectrophotometry and high-performance liquid chromatography. The results indicate that hydrothermal extraction not only yields a high concentration of bioactive phenolics but also preserves their antioxidant properties. This method presents a viable, environmentally friendly alternative for the valorization of agricultural by-products, aligning with green chemistry principles. Future research should explore its scalability and integration into biorefinery models.