Abstract:
Environmentally benign and cost-efficient plant mediated synthesis were used to
fabricate Ag0, Fe0, Zn0, Ag2O, Fe2O3, ZnO Nanoparticles and their composites
with polystyrene for food packaging and medicinal applications. Nanomaterials
were successfully synthesized and confirm by using UV/Vis, XRD, and SEMEDX
techniques. All prepared materials exhibited excellent antioxidant
potential and promising results DPPH free radical scavenging activity and
phosphomolybdenum assay, among al results of Silver Nanoparticles were
prominent. Antibacterial activity was tested against 4 different bacteria
Pseudomonas aeruginosa, Staphylococcus aureus, bacillus subtilis, and
Escherichia coli, 2 of them were gram positive and two were gram negative. All
materials exhibited excellent results, among all Zinc nanoparticles showed best
results. Anti-inflammatory activity was tested using three assays, egg albumin,
bovine serum albumin and erythrocytes hemolysis. Iron nanoparticles showed
highest inhibition activity in Bovine serum assay while results of other materials
were promising as well, in egg albumin assay the activity of Ag2O was highest
while all other materials showed excellent results as well. In blood homolytic
assay all materials showed promising results, activity of Fe2O3 was best among
all. Food packaging potential was tested against Lemon and Apple slices by
packing them in Metal-Polystyrene and Pure polystyrene, Metal polystyrene
composites successfully stopped the degradation and oxidation of these food
materials as it possesses antibacterial and antioxidizing properties and has great
potential in food packaging materials as well as medicine.
