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Synthesis of nc-UO 2 by controlled precipitation in aqueous phase

Jovani-Abril, Raquel and Gibilaro, Mathieu and Janssen, Arne and Eloirdi, Rachel and Somers, Joseph and Spino, José L. and Malmbeck, Rikard Synthesis of nc-UO 2 by controlled precipitation in aqueous phase. (2016) Journal of Nuclear Materials, 477. 298-304. ISSN 0022-3115

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Official URL: https://doi.org/10.1016/j.jnucmat.2016.04.050

Abstract

A new strain of actinobacteria, designated ACD1, was isolated from a Saharan soil sample in the Hoggar region (Algeria). Morphological study led to this strain being classified as a member of the Actinomadura genus. Phylogenetic analysis based on the 16S rRNA gene showed that the strain is closely related to Actinomadura sediminis DSM 45500T (98.5% sequence similarity). Furthermore, strain ACD1 presented a strong activity against mycotoxigenic and phytopathogenic fungi, including Aspergillus and Fusarium strains, and other pathogenic microorganisms. The kinetics of antimicrobial activity were investigated on ISP-2, Bennett and TSB media. Four solvents (n-hexane, dichloromethane, ethyl acetate and n-butanol) were used for the extraction of the produced antibiotic. The highest antimicrobial activity was obtained using the butanolic extract from the ISP-2 medium after seven days of fermentation culture. The active antibiotic was purified by reverse-phase HPLC using a C18 column. The UV-visible and mass spectra were determined. The minimum inhibitory concentrations (MIC) of this antibiotic were determined against pathogenic microorganisms.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > European Commission, Joint Reasearch Centre - JRC (GERMANY)
Laboratory name:
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Deposited By: Loetitia MOYA
Deposited On:25 Oct 2018 08:48

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