Sustainable water treatment in aquaculture – photolysis and photodynamic therapy for the inactivation of Vibrio species
作者： Danilo Malara , Christina Mielke , Michael Oelgemöller , Mathias O Senge , Kirsten Heimann
DOI: 10.1111/ARE.13128
关键词:
摘要: Species of the genus Vibrio have been recognized as one most significant pathogens in aquaculture farming, causing mass mortality farmed stocks. Photodynamic Antimicrobial Chemotherapy (PACT) with singlet oxygen (1O2) has identified a powerful and sustainable water treatment method for pathogen eradication. In this study, efficiencies photolytic photodynamic disinfection protocols were studied two species, parahaemolyticus owensii. The selected microorganisms successfully cultivated marine broth irradiations performed ~108 bacteria mL−1. Treated samples monitored bacterial regrowth up to 7 days. Photolysis experiments initially conducted UV-A, UV-B 2 h visible (VIS) light 24 h. Of these, only irradiation at least 45 min was efficient controlling Vibrio. Irradiations VIS subsequently repeated under PACT conditions dose−response water-soluble porphyrins, [T4(MePy)P] [TPPS4]. Disinfections successful both porphyrin types minimum concentrations 10 μM irradiation.
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