M.A. Thesis:

Green synthesis of iron nanoparticles using aqueous extract of Mentha piperita L. and evaluation of antioxidant activity of this extract.

ABSTRACT BIOSYNTHESIS OF ZERO-VALENT IRON NANOPARTICLES WITH SMALL SIZE AND BIOSTABILITY ARE VERY IMPORTANT AND HAVE VARIOUS BIOMEDICAL APPLICATIONS. IN THIS WORK, AN EASY AND SIMPLE METHOD FOR THE GREEN SYNTHESIS OF IRON NANOPARTICLES USING PLANT EXTRACTS IS REPORTED. IN THIS STUDY, PEPPERMINT EXTRACT WAS USED FOR THE GREEN SYNTHESIS OF ZERO-VALENT IRON NANOPARTICLES. ANTIOXIDANT PROPERTIES OF PEPPERMINT EXTRACT AND EXTRACT CONTAINING IRON NANOPARTICLES WERE DETERMINED. THE STRUCTURAL INVESTIGATION OF IRON NANOPARTICLES WAS DONE USING A SCANNING ELECTRON MICROSCOPE.THE FORMATION OF IRON NANOPARTICLES WAS CONFIRMED BY CHANGING THE COLOR OF THE SOLUTION FROM YELLOW TO BROWN. OPTIMUM CONDITIONS FOR THE SYNTHESIS OF IRON NANOPARTICLES WERE OBTAINED BY CHECKING THE PH AND AMOUNT OF THE EXTRACT SOLUTION. THE CHARACTERISTICS AND MORPHOLOGY OF IRON NANOPARTICLES WERE INVESTIGATED BY UV-VIS SPECTRUM AND ELECTRON MICROSCOPE IMAGES. ANTIOXIDANT PROPERTIES WERE OBSERVED IN BOTH THE EXTRACT AND THE EXTRACT CONTAINING IRON NANOPARTICLES, AND THE ADDITION OF IRON NANOPARTICLES INCREASED THE ANTIOXIDANT PROPERTIES OF PEPPERMINT. THE STRUCTURAL INVESTIGATION OF IRON NANOPARTICLES USING A SCANNING ELECTRON MICROSCOPE SHOWED THAT THE SHAPE OF THE PARTICLES IS SPHERICAL AND THE AVERAGE SIZE IS 70-80 NM, THEREFORE, THE GREEN SYNTHESIS OF IRON NANOPARTICLES WITH PEPPERMINT EXTRACT, AS AN ALTERNATIVE TO CHEMICAL SYNTHESIS, FROM THE POINT OF VIEW OF APPLICATION BIOLOGICAL AND MEDICAL ARE USEFUL.

Keywords: KEYWORDS: IRON NANOPARTICLES, PEPPERMINT, GREEN SYNTHESIS, ANTIOXIDANT PROPERTIES