Effect of electron beam irradiation and the presence of antibiotics on the population ratio of resistan/sensitive bacterial cultures in model wastewater matrix with antibiotics and bacteria added prior to advanced oxidation treatment

Homlok Renáta; Kiskó Gabriella; Kovács András; Tóth Tünde; Dobó Viktória; Takács Erzsébet; Mohácsi-Farkas Csilla; Wojnárovits László; Szabó László: Effect of electron beam irradiation and the presence of antibiotics on the population ratio of resistan/sensitive bacterial cultures in model wastewater matrix with antibiotics and bacteria added prior to advanced oxidation treatment.

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Absztrakt (kivonat)

Control strategies against the spread of antibiotic resistance should be considered in wastewater treatment plants. It is important to understand how resistant bacteria behave in the presence of trace amounts of antibiotics, in order to implement appropriate measures. In our work, we examined the population dynamics of resistant/sensitive Staphylococcus aureus co-cultures. On the one hand, we gained insight into the effect of trace amounts of antibiotics (piperacillin and erythromycin) on bacteria in different wastewater matrices, and on the other hand, we studied the applicability of electron radiation to eliminate the antibacterial effect. Based on our results, trace amounts of antibiotics act on the resistant strain. Presumably, it triggers biological processes in resistant bacteria that do not provide a competitive benefit but disadvantage over the sensitive subtype, and the trace level of the antibiotic present does not appear to affect the sensitive strains. The effect of these conditions on population dynamics is reduced with the use of accelerated electrons, presumably due to the fact that the decomposition products of the components of the effluent matrix (such as humic acid) also contribute to the chemical transformations. Furthermore, it has become apparent that the presence of trace amounts of antibiotics on the one hand initiates biochemical processes in the resistant subtype and on the other hand sensitizes bacteria to the attack of free radicals generated during electron beam treatment. It is clear that more understanding is needed on the effects of trace level of antibiotics in environmental waters on the cellular response and population behavior of resistant bacterial cultures.

Mű típusa:	Konferencia vagy workshop anyag
Befoglaló folyóirat/kiadvány címe:	Proceedings of the International Symposium on Analytical and Environmental Problems
Dátum:	2021
Kötet:	27
ISBN:	978-963-306-835-9
Oldalak:	pp. 138-141
Nyelv:	angol
Kiadó:	University of Szeged
Kiadás helye:	Szeged
Konferencia neve:	International Symposium on Analytical and Environmental Problems (27.) (2021) (Szeged)
Befoglaló mű URL:	http://acta.bibl.u-szeged.hu/75798/
Kulcsszavak:	Környezetkémia
Megjegyzések:	Bibliogr.: 141. p. ; ill. ; összefoglalás angol nyelven
Szakterület:	01. Természettudományok 01. Természettudományok > 01.04. Kémiai tudományok
Feltöltés dátuma:	2022. máj. 30. 12:03
Utolsó módosítás:	2022. aug. 08. 15:40
URI:	http://acta.bibl.u-szeged.hu/id/eprint/75947

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