Growth performance of Large White Yorkhsire Pigs under different feeding
regimes in hot-humid climatic conditions of South India

Abstract :

A green rapid biogenic synthesis of silver nanoparticles (Ag NPs) using Dodonaea viscosa (D. viscosa) aqueous extract was demonstrated in this present investigation. Cubic shape was observed from biosynthesized SNPs in the range of 30 to 50 nm. The formation of Ag NPs was confirmed by Surface plasmon resonance (SPR) at 435 nm using UV–VIS spectrophotometer. The reduction of silver ions to Ag NPs by D. viscosa extract was completed within 24 hrs which was evidenced potentiometrically. Synthesised AgNPs was characterised using UV–vis spectroscopy, Fourier transformed infrared spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Energy dispersive X-ray Analysis (EDX), Powder X-ray diffraction (XRD) and also antibacterial activity using clinically important pathogens. Plant derived proteins or polyphenols are used as reductants and stabilizers as well. In addition, it showed significant antibacterial activity towards two Gram-positive bacteria (Bacillus subtilis, Enterococcus faecalis) and two Gram-negative bacteria (Proteus vulgaris, Klebsiella pneumonia). The highest zone of inhibition was observed in Klebsiella pneumonia (19 mm in diameter) and followed by Enterococcus faecalis (18 mm in diameter).