The Camellia sinensis (green tea leaves) are discarded and considered as waste once it’s prepared. Hence, the used green tea leaves can act as an adsorbent for the removal of heavy metals and other applications. The extracts were obtained by cold and soxhlet methods using ethanol and aqueous solvents. These were qualitatively and quantitatively analyzed which showed the presence of alkaloids, phenols, glycosides, tannins, flavonoids, steroids, terpenoids, carbohydrates, proteins and saponins. The nanoparticles were synthesized using 0.01M of ferric chloride at varying ratios and were characterized using UV – spectroscopy, SEM + EDAX, XRD & FTIR. The UV – Spectra peaks showed absorption at 200 – 300nm. The antibacterial activity was performed using E.coli, P.aeruginosa, B.subtilis, S.aureus &S.pyogenes and the antifungal activity using P.chrysogenum, C.albicans & A.niger. The maximum zone of inhibition against P.aeruginosa for Soxhlet Tea ethanol (STE) and C.albicans for Cold Extract Tea ethanol (CETE) was measured as 25mm and 10mm. Several applications were carried out such as anticoagulation & thrombolytic activity showed positive results, 67.5% of antioxidant activity was seen in CETW (Cold Extract Tea water), total antidiabetic activity was higher in STE, CETE has shown 36.64% of anti inflammatory activity, 77.7% of water hardness was removed using CETW extract, STE showed result for larvicidal activity, 76.33% of heavy metals were removed by STE and these were found to be non – toxic to the vero cells.
