Abstract
The current study was aimed to prepare a novel composite thin film from Manilla tamarind (MC) outer skin and seeds with silver nanoparticles (AgNPs) and TiO2 nanoparticles and blended with chitosan (Ch). NaBH4 was used to prepare MC/AgNPs composite utilizing the reduction process. Solvent casting method was used to prepare a thin film of the composite material MC/AgNPs//TiO2/Ch. Field emission scanning electron microscopy (FE-SEM) displayed the diffusion of Ch and AgNPs and TiO2 on the surface of MC network. The average particle size of AgNPs distributed on the MC is between 47 and 48 nm. Nanotitania was prepared by sol-gel method using titanium tetraisopropoxide and isopropanol. Antibacterial studies show that the nanocomposite exhibited higher inhibition effects against Staphylococcus Aureus and Escherichia Coli than isolated Manilla cellulose. The photodegradation of nanocomposite showed 77 % within just 10 min. Antioxidant studies were analyzed by using DPPH radical at 517 nm. The percentage of antioxidant activity of MC and nanocomposite showed as 27.15 % and 30.41 % respectively with DPPH radical. The high capability of antibacterial and photocatalytic effects finds application in food packaging applications and wastewater treatment.
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