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Effects of Different Metallic Nanoparticles on Germination and Morphology of the Fungus Rhizopus oryzae 1526 and Changes in the Production of Fumaric Acid.

Das, Ratul Kumar; Brar, Satinder Kaur; Verma, Mausam P. (2015). Effects of Different Metallic Nanoparticles on Germination and Morphology of the Fungus Rhizopus oryzae 1526 and Changes in the Production of Fumaric Acid. BioNanoScience , vol. 5 , nº 4. p. 217-226. DOI: 10.1007/s12668-015-0183-8.

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Résumé

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The present study was undertaken to investigate the impact of different concentrations (200–1000 μg/mL) of micro- and nanoparticles of ZnO, Fe3O4 and MnO2 on spore germination and morphology of the fumaric acid (FA)-producing fungus Rhizopus oryzae 1526. Production profile of FA was also investigated as a response to micro- and nanoforms of these compounds. Glucose-basic salts media was used for the growth and FA production. Different incubation conditions were applied for growth (30 °C, 200 rpm and 24 h) and FA production (30 °C, 200 rpm and 72 h). Control experiments were designed without the micro- and nanoforms of the inorganic compounds. At 200 μg/mL of micro- and nanoparticles of ZnO, Fe3O4 and MnO2, percent of spore germination obtained were almost same (96–98 %) as control experiments, except microparticles of MnO2 (85 %). Higher concentrations (>200 μg/mL) of the micro- and nanoparticles caused inhibition in spore germination. The fungus exhibited changes in the pellet size and morphology at different concentrations of the particles. FA production was also influenced by micro- and nanoparticles of ZnO, Fe3O4 and MnO2. Overall, Fe3O4 was found to be the most biocompatible in both micro- and nanoform. Findings of the present research work suggested that the three essential cations (Zn2+, Fe2+/3+ and Mn2+) can have different impacts on the fungus when applied as micro- and nanoformulations.

Type de document: Article
Mots-clés libres: Rhizopus oryzae 1526; microparticles; nanoparticles; germination; morphology; fumaric acid
Centre: Centre Eau Terre Environnement
Date de dépôt: 19 avr. 2018 19:53
Dernière modification: 20 avr. 2018 19:58
URI: http://espace.inrs.ca/id/eprint/3830

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