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Titel (primär) Degradation of estradiol and ethinyl estradiol by activated sludge and by a defined mixed culture
Autor Weber, S.; Leuschner, P.; Kämpfer, P.; Dott, W.; Hollender, J.;
Journal / Serie Applied Microbiology and Biotechnology
Erscheinungsjahr 2005
Department ISOBIO;
Band/Volume 67
Heft 1
Sprache englisch;
Abstract The aerobic degradation of the natural hormone 17-β-estradiol (E2) and the synthetic hormone 17-α-ethinyl estradiol (EE2) was investigated in batch experiments with activated sludge from a conventional and a membrane sewage treatment plant. E2 was converted to estrone (E1), the well known metabolite, and further completely transformed within 3 days. The turnover rates of E2 did not differ greatly between conventional and membrane activated sludge. EE2 was persistent in both sludges. By several transfers into fresh E2-medium an enrichment culture could be selected that used E2 as growth substrate. Further enrichment and isolation led to a defined mixed culture consisting of two strains, which were identified by a polyphasic approach as Achromobacter xylosoxidans and Ralstonia sp., respectively. The culture used E2 and E1 as growth substrates and transformed estriol (E3) and 16-α-hydroxyestrone but not the xenoestrogens bisphenol A, α-zearalenol, mestranol or EE2. The turnover rates of E2 were 0.025–0.1 μg h−1 cfu−1 and did not depend on the steroid concentration.
ID 3883
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=3883
Weber, S., Leuschner, P., Kämpfer, P., Dott, W., Hollender, J. (2005):
Degradation of estradiol and ethinyl estradiol by activated sludge and by a defined mixed culture
Appl. Microbiol. Biotechnol. 67 (1), 106 - 112