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Investigations on gold nanoparticles biosynthesis potential of marine derived fungi

A.K.Vala

The objective of the work was to explore potential ofmarine-derived fungi for biosynthesis of gold nanoparticles (GNPs). Three marine-derived fungal isolates viz. Aspergillus candidus, Aspergillus flavus and Aspergillus niger have been examined for their ability to biosynthesize GNPs.All the test isolates were challenged with different concentrations (0.25, 0.5, 1, 2 and 3mM) of gold (III) chloride under static condition at 270C for 72h. The isolates could biosynthesize spherical GNPs mostly extracellularly. In certain cases,mode of synthesis extra/intracellular was observed to be dependent on gold ion concentrations. While there is no much information available on exploitation of marine-derived fungi for biosynthesis of metal nanoparticles, present findings suggest marinederived fungi as potential resource for developing cost-effective green technology for GNP synthesis.