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Antimicrobial activity of metal oxide microspheres: an innovative process for homogeneous incorporation into materials

Feuillolay, Catherine and Haddioui, Laïla and Verelst, Marc and Furiga, Aurélie and Marchin, Loïc and Roques, Christine Antimicrobial activity of metal oxide microspheres: an innovative process for homogeneous incorporation into materials. (2018) Journal of Applied Microbiology, 125 (1). 45-55. ISSN 1364-5072

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Official URL: https://doi.org/10.1111/jam.13752


AIMS:To investigate the potent control of microbial surface contamination of an innovative process which consists in incorporating metal oxide microspheres homogeneously into materials. Spherical microspheres containing zinc and magnesium oxides synthesized via a one-step manufacturing process (Pyrolyse Pulvérisée® ) and incorporated into different plastic matrices were evaluated for their antimicrobial activity according to JIS Z 2801 standard. A significant activity was observed for microsphere-added polyethylene coupons with a reduction of all tested bacteria populations, including Gram negative and Gram positive even expressing acquired antibiotic resistance (Escherichia coli ESBL, Staphylococcus aureus metiR). An antiviral activity higher than 2 log of reduction was also observed on H1N1 and HSV-1 viruses. This antimicrobial effect was dose-dependent and time-dependent for both polyethylene and polypropylene matrices. Antimicrobial activity was maintained after exposition to disinfectants and totally preserved 50 months after the preparation of the coupons. CONCLUSIONS:Incorporated into plastic matrices, metal oxide microspheres showed significant antibacterial and antiviral activities. SIGNIFICANCE AND IMPACT OF STUDY: This is, to our knowledge, the first report on an original process incorporating metal oxide microspheres, which have specific physico-chemical and antimicrobial properties, into materials that could be used for surface contamination prevention.

Item Type:Article
HAL Id:hal-01977795
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 - Toulouse INP (FRANCE)
Other partners > Pylote SA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > FONdation pour le DEveloppement de la REcherche PHARmaceutique- FONDEREPHAR (FRANCE)
Other partners > Centre Hospitalier Universitaire de Toulouse - CHU Toulouse (FRANCE)
Laboratory name:
Deposited On:11 Jan 2019 08:37

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