Green Synthesis of Silver Nanoparticles by Water Soluble Fraction of the Extracellular Polysaccharides/Matrix of the Cyanobacterium Nostoc Commune and its Application as a Potent Fungal Surface Sterilizing Agent of Seed Crops

• DOI: 10.13189/ujmr.2014.020303
• Publication Date: 2021-04-24T03:43:35Z
• Authors: Fatthy Mohamed Morsy; Nivien Allam Nafady; Mohamed Hemida Ab...; Deia Abd Elhady
• Keywords: Extracellular polysaccharide; Fraction (chemistry); Matrix (chemical analysis)

Studying of nanoparticle structures is gaining momentum because their great potential in improving several fields science such as agriculture.The water soluble fraction the extracellular polysaccharides (EPS)/matrix highly EPS producing cyanobacterium Nostoc commune have been used a potent reducing and capping agent for green synthesis silver nanoparticles.The size these nanoparticles with coat was found to be range 15-54 nm analyzed using transmission electron micrographs.Interestingly, after washing coated by ethanol, reduced less than 15 due formation oxide removal coat.Silver showed antibacterial properties against Escherichia coli.The minimum inhibitory concentration (MIC) 0.012 mg/ml while bactericidal (MBC) 0.016 mg/ml.The slight difference between MIC MBC suggests that act E. coli.Presoaking seeds crop plants (Sorghum broad bean) five-fold (0.08 mg/ml) did not adversely affect germination Vicia faba L. Sorghum bicolor plants.Concomitantly, fivefold powerful sterilizing grains seed/grain-borne microorganisms.The results gradual depletion total colony forming units (CFU) sterilized those chlorine.These suggest can surface seed crops phytopathogenic fungi.