000			02646nam a22002657a 4500
003			KOHA
005			20250108132947.0
008			240927d2024 cy oe||| |||| 00| 0 eng d
040			_aCY-NiCIU _beng _cCY-NiCIU _erda
041			_aeng
090			_aYL 3474 _bH37 2024
100	1		_aHassan, Adam Saleh
245	1	0	_aGREEN SYNTHESIS AND CHARACTERIZATION OF BRASSICA RAPA SUBSP, NARINOSA SILVER NANOPARTICLES FOR ANTIMICROBIAL, ANTIOXIDANT APPLICATION AND CATALYTIC DEGARDATION OF SELECTED DYES / _cADAM SALEH HASSAN ; SUPERVISOR, PROF. DR. NUR PAŞAOĞLULARI AYDINLIK
264			_c2024
300			_a69 sheets ; _c30 cm _e+1 CD ROM
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
502			_aThesis (MSc) - Cyprus International University. Institute of Graduate Studies and Research Chemistry
520			_aThe leaf extract of Brassica rapa subsp. narinosa (tatsoi) is used in this study to investigate the green production of silver nanoparticles (AgNPs) and assess their antibacterial, antioxidant, and dye-catalytic degradation properties. Phytochemicals were used in the fast synthesis process as reducing and stabilizing agents; a color shift to dark brown signified successful creation. The presence and characteristics of the nanoparticles, such as a prominent UV absorption peak at 460 nm and a zeta potential of -21.85 mV, indicating stability, were confirmed by characterization techniques such as UV-visible spectroscopy, Fourier Transform-Infrared Spectroscopy (FT-IR), Scanning Electron Microscope (SEM), Zeta sizer, and X-ray diffraction (XRD). Under specified conditions, the produced AgNPs showed substantial catalytic activity, reaching 60% degradation of methylene blue and 90% degradation of safranin. The DPPH assay was also used to evaluate the antioxidant activity. The results showed that the plant extract had higher antioxidant activity than the nanoparticles, with IC50 values of 8.409 μg/ml and 13.40 μg/ml, respectively. Gram-positive Bacillus subtilis (B. subtilis) and Gram-negative Escherichia coli (E.coli) were efficiently stopped from growing by AgNPs, according to antimicrobial tests, but the plant extract by itself showed no antibacterial action. This work demonstrates the possibility of ecologically friendly nanoparticle production for useful uses in antioxidant therapy, antibacterial treatments, and dye pollution cleanup in the environment.
650		0	_aChemistry _vDissertations, Academic
700	1		_aPaşaoğluları Aydınlık, Nur _esupervısor
942			_2ddc _cTS
999			_c292983 _d292983