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Aflatoxin B1 and Zearalenone-Detoxifying Profile of Rhodococcus Type Strains

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Abstract

Aflatoxin B1 (AFB1) and zearalenone (ZON) are dangerous mycotoxins due to their carcinogenicity or oestrogenicity. To alleviate negative effects on humans and animals, successful detoxification tools are needed. The application of microorganisms to biodegrade mycotoxins can be an effective way in food and feed industry enhancing food safety. Several Rhodococcus strains are effective in the degradation of aromatic mycotoxins and their application in mycotoxin biodetoxification processes is a promising field of biotechnology. In this study, we investigated the AFB1 and ZON detoxification ability of 42 type strains of Rhodococcus species. Samples were analysed by high-performance liquid chromatograph equipped with fluorescence detector for mycotoxin concentration and SOS-chromotest was used for monitoring remaining genotoxicity. Out of the 42 Rhodococcus strains, 18 could eliminate more than 90% of the applied AFB1 and the genotoxicity was ceased by 15 strains in 72 h (R. imtechensis JCM 13270T, R. erythropolis JCM 3201T, R. tukisamuensis JCM 11308T, R. rhodnii JCM 3203T, R. aerolatus JCM 19485T, R. enclensis DSM 45688T, R. lactis DSM 45625T, R. trifolii DSM 45580T, R. qingshengii DSM 45222T, R. artemisiae DSM 45380T, R. baikonurensis DSM 44587T, R. globerulus JCM 7472T, R. kroppenstedtii JCM 13011T, R. pyridinivorans JCM 10940T, R. corynebacterioides JCM 3376T). In case of ZON, only R. percolatus JCM 10087T was able to degrade more than 90% of the compound and to reduce the oestrogenicity with 70%.

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Acknowledgements

This research was supported by NVKP_16-1-2016-0009 and Aquafuture (VKSZ-12-1-2013-0078).

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Authors and Affiliations

  1. Department of Environmental Safety and Ecotoxicology, Faculty of Agricultural and Environmental Sciences, Szent István University, 1 Páter Károly Street, Gödöllő, 2100, Hungary

    Anita Risa, Csilla Krifaton, Balázs Kriszt & Mátyás Cserháti

  2. Department of Applied and Environmental Microbiology, Research Institute of Agro-Environmental Sciences, National Agricultural Research and Innovation Centre, 15 Herman Ottó Street, Budapest, 1022, Hungary

    József Kukolya

  3. Regional University Centre of Excellence, Szent István University, 1 Páter Károly Street, Gödöllő, 2100, Hungary

    András Táncsics

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  1. Anita Risa
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Correspondence to Csilla Krifaton.

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Risa, A., Krifaton, C., Kukolya, J. et al. Aflatoxin B1 and Zearalenone-Detoxifying Profile of Rhodococcus Type Strains. Curr Microbiol 75, 907–917 (2018). https://doi.org/10.1007/s00284-018-1465-5

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