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Menezes KV, Duarte CEDS, Moreira MG, Moreno TDJC, Pereira VJDS, Ucella-Filho JGM, Otenio MH, Ignacchiti MDC, Resende JA. Enterobacteria in anaerobic digestion of dairy cattle wastewater: Assessing virulence and resistance for one health security. WATER RESEARCH 2024; 252:121192. [PMID: 38309066 DOI: 10.1016/j.watres.2024.121192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/26/2023] [Accepted: 01/23/2024] [Indexed: 02/05/2024]
Abstract
Samples from a dairy cattle waste-fed anaerobic digester were collected across seasons to assess sanitary safety for biofertilizer use. Isolated enterobacteria (suggestive of Escherichia coli) were tested for susceptibility to biocides, antimicrobials, and biofilm-forming capability. Results revealed a decrease in total bacteria, coliforms, and enterobacteria in biofertilizer compared to the effluent. Among 488 isolates, 98.12 % exhibited high biofilm formation. Biofertilizer isolates exhibited a similar biofilm formation capability as effluent isolates in summer, but greater propensity in winter. Resistance to biocides and antimicrobials varied, with tetracycline resistance reaching 19 %. Of the isolates, 25 were multidrug-resistant (MDR), with 64 % resistant to three drugs. Positive correlations were observed between MDR and increased biofilm formation capacity in both samples, while there was negative correlation between MDR and increased biocide resistance. A higher number of MDR bacteria were found in biofertilizer compared to the effluent, revealing the persistence of E. coli resistance, posing challenges to food safety and public health.
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Affiliation(s)
- Kássia Vidal Menezes
- Graduate Program in Veterinary Sciences, Center for Agricultural Sciences and Engineering - CCAE, Federal University of Espírito Santo - UFES, Alto Universitário, no number, Guararema, Alegre, ES 29500-000, Brazil
| | | | - Myleny Goularte Moreira
- Department of Pharmacy and Nutrition, Federal University of Espírito Santo - UFES, Alegre, ES 29500-000, Brazil
| | | | - Vitor José da Silva Pereira
- Department of Pharmacy and Nutrition, Federal University of Espírito Santo - UFES, Alegre, ES 29500-000, Brazil
| | - João Gilberto Meza Ucella-Filho
- Department of Forestry and Wood Sciences, Federal University of Espírito Santo - UFES, Jerônimo Monteiro, ES 29550-000, Brazil
| | | | | | - Juliana Alves Resende
- Graduate Program in Veterinary Sciences, Center for Agricultural Sciences and Engineering - CCAE, Federal University of Espírito Santo - UFES, Alto Universitário, no number, Guararema, Alegre, ES 29500-000, Brazil; Department of Pharmacy and Nutrition, Federal University of Espírito Santo - UFES, Alegre, ES 29500-000, Brazil.
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