Journal
BIORESOURCE TECHNOLOGY
Volume 166, Issue -, Pages 235-242Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.04.085
Keywords
Gold nanoparticles; Biosynthesis; Trichoderma viride; Hypocrea lixii; Biocatalyst
Funding
- New Initiative (as a Cross Flow Technology project) Root Biology and Its Correlation to Sustainable Plant Development and Soil Fertility'' (RootSF) from the Council of Scientific and Industrial Research (CSIR), New Delhi, India [BSC0204]
- CSIR
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The aim of this work was to synthesize gold nanoparticles by Trichoderma viride and Hypocrea lixii. The biosynthesis of the nanoparticles was very rapid and took 10 min at 30 degrees C when cell-free extract of the T. viride was used, which was similar by H. lixii but at 100 degrees C. Biomolecules present in cell free extracts of both fungi were capable to synthesize and stabilize the formed particles. Synthesis procedure was very quick and environment friendly which did not require subsequent processing. The biosynthesized nanoparticles served as an efficient biocatalyst which reduced 4-nitrophenol to 4-aminophenol in the presence of NaBH4 and had antimicrobial activity against pathogenic bacteria. To the best of our knowledge, this is the first report of such rapid biosynthesis of gold nanoparticles within 10 min by Trichoderma having plant growth promoting and plant pathogen control abilities, which served both, as an efficient biocatalyst, and a potent antimicrobial agent. (C) 2014 Elsevier Ltd. All rights reserved.
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