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The present work describes spectroscopic interaction of individual of the three important amino acids Tryptophan (Trp), Tyrosine (Tyr) and Phenylalanine (Phe) with biologically prepared gold nanoparticles (GP). The obtained UV–vis spectrum implicated the formation of ground state complex between Trp, Tyr and Phe with GP. Gold nanoparticles can quench the intrinsic fluorescence of the said amino acids...
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