Effect of Hydrogen Peroxide on Cyanobacterial Biofilms

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Romeu, MJ (Author) FEUP; Morais, J (Author) Other; Vitor Vasconcelos (Author) FCUP; Filipe Mergulhão (Author) FEUP

Journal

Title: Antibiotics

Vol. 12

Final page: 1450

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Associated Projects

LEPABE - Financiamento Plurianual 2020-2023 da Unidade de I&D LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

ALiCE - ALiCE - Laboratório Associado em Engenharia Química

Healthy Waters - Healthy Waters - Identification, Elimination, Social Awareness and Education of Water Chemical and Biological Micropollutants with Health and Environmental Implications

SurfSAFE - Surface modification to increase microbial SAFEty in the food industry

BacAllFree - Controlo da contaminação por bactérias e alergénios na indústria alimentar usando superfícies biomiméticas

Other information

Authenticus ID: P-00Z-46N

DOI: 10.3390/antibiotics12091450

Abstract (EN): Although a range of disinfecting formulations is commercially available, hydrogen peroxide is one of the safest chemical agents used for disinfection in aquatic environments. However, its effect on cyanobacterial biofilms is poorly investigated. In this work, biofilm formation by two filamentous cyanobacterial strains was evaluated over seven weeks on two surfaces commonly used in marine environments: glass and silicone-based paint (Sil-Ref) under controlled hydrodynamic conditions. After seven weeks, the biofilms were treated with a solution of hydrogen peroxide (H2O2) to assess if disinfection could affect long-term biofilm development. The cyanobacterial biofilms appeared to be tolerant to H2O2 treatment, and two weeks after treatment, the biofilms that developed on glass by one of the strains presented higher biomass amounts than the untreated biofilms. This result emphasizes the need to correctly evaluate the efficiency of disinfection in cyanobacterial biofilms, including assessing the possible consequences of inefficient disinfection on the regrowth of these biofilms.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 16