The collected herbal and green tea samples were initially ground to fine powder and passed through a sieve (40 mesh). The groundsamples were dried to constant weight over a desiccant at roomtemperature. For water extraction, 1.00 g of the powdered samplewas extracted with 250 mL of boiling ultra-filtered water. Infusionswere allowed to steep for 1 h with continuous swirling and thencooled. Subsequently, the infusions were filtered and stored at 4◦Cfor further analysis within 8 h.