Biodegradation of dyes by some green algae and cyanobacteria

Decoloración de aguas residuales de una industria de pinturas por la microalga Chlorella sp

“…Grupos funcionales tales como hidroxilos, carboxilatos, aminas y fosfatos que se encuentran en la superficie de la pared celular son considerados los responsables mediante atracción electrostática y complejación, de retirar los contaminantes de las aguas residuales (4,10). Al igual que las bacterias, las algas son capaces de degradar colorantes "azo" a través de la azoreductasa que inicia el rompimiento del enlace "azo", resultando en la formación de aminas aromáticas (1,(11)(12)(13). Enzimas oxidativas también están involucradas en los procesos de decoloración (13).…”

“…Functional groups such as hydroxyls, carboxylates, amines and phosphates in the cell surface are considered as direct responsible by means of electrostatic attraction and complexation, to remove pollutants from wastewater (4,10). Alike bacterias, algaes can degrade colorants "azo" through azoreductase that starts breacking the "azo" bond, producing aromatic amines (1,(11)(12)(13). Oxydative enzymes also play part in this decoloration process (13).…”

Industrial Wastewater Treatment: A Challenging Task in the Industrial Waste Management

“…These processes are prohibitively expensive and complex at the current level of development. Additional obstacle in the waste water treatment is the existence of relatively high concentration of colorants, and AOS are the only effective ways for wastewater treatment [44][45][46][47][48][49][50].…”

Biotransformation of Carmoisine and Reactive Black 5 Dyes Using <i>Saccharomyces cerevisiae</i>

“…The available evidence indicates that azoreductase activity can be associated with more than one reductase [15]. Azoreductases are present in microorganisms, such as bacteria [16]- [18], algae [19] and yeast [20].…”