Related Experiment Video
Updated: May 14, 2026

Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation
Published on: October 31, 2019
Decolorization and biodegradation of reactive sulfonated azo dyes by a newly isolated Brevibacterium sp. strain VN-15
Elisangela Franciscon1, Matthew James Grossman, Jonas Augusto Rizzato Paschoal
1Department of Food Science, Food Engineering School, University of Campinas, (UNICAMP) Rua Monteiro Lobato 80, Cidade Universitária Zeferino Vaz, Campinas, SP 13083-862 Brazil.
Abstract:
Azo dyes constitute the largest and most versatile class of synthetic dyes used in the textile, pharmaceutical, food and cosmetics industries and represent major components in wastewater from these industrial dying processes. Biological decolorization of azo dyes occurs efficiently under low oxygen to anaerobic conditions. However, this process results in the formation of toxic and carcinogenic amines that are resistant to further detoxification under low oxygen conditions. Moreover, the ability to detoxify these amines under aerobic conditions is not a wide spread metabolic activity. In this study we describe the use of Brevibacterium sp. strain VN-15, isolated from an activated sludge process of a textile company, for the sequential decolorization and detoxification of the azo dyes Reactive Yellow 107 (RY107), Reactive Black 5 (RB5), Reactive Red 198 (RR198) and Direct Blue 71 (DB71). Tyrosinase activity was observed during the biotreatment process suggesting the role of this enzyme in the decolorization and degradation process, but no-activity was observed for laccase and peroxidase. Toxicity, measured using Daphnia magna, was completely eliminated.
More Related Videos
16:33Methods for Facilitating Microbial Growth on Pulp Mill Waste Streams and Characterization of the Biodegradation Potential of Cultured Microbes
Published on: December 12, 2013
08:21Isolation and Screening from Soil Biodiversity for Fungi Involved in the Degradation of Recalcitrant Materials
Published on: May 16, 2022
Related Concept Videos
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
Bioremediation
Microbial Bioremediation of Uranium
Microbial Bioremediation of Pesticides
Bacterial Phylum Bacteroidota
Microbial Bioremediation of Hydrocarbons