Recent Advances in Microbial Remediation of Textile Azo Dyes

Saini, Amrit; Doda, Alisha; Singh, Baljinder

doi:10.1007/978-981-13-1187-1_3

Cited by 6 publications

(3 citation statements)

References 30 publications

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“…Several reports have shown that the toxicity of metabolites formed after dye degradation is comparatively higher than its parent dye compounds (Misal and Gawai, 2018;Saini et al, 2018). So, to verify the acceptance of degradation, it is important to measure the toxicity response of parent dye and its degraded products.…”

Section: Toxicity Analysismentioning

confidence: 99%

Degradation and Toxicity Analysis of a Reactive Textile Diazo Dye-Direct Red 81 by Newly Isolated Bacillus sp. DMS2

Amin¹,

Rastogi²,

Chaubey³

et al. 2020

Front. Microbiol.

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An efficient diazo dye degrading bacterial strain, Bacillus sp. DMS2 was isolated from a long-term textile dye polluted environment. The strain was assessed for its innate ability to completely degrade and detoxify Direct Red 81 (DR81) textile dye under microaerophilic conditions. The degradation ability of strain showed significant results on optimizing the nutritional and environmental parameters. Based on statistical models, maximum efficiency of decolorization achieved within 24 h for 100 mg/l of dye supplemented with glucose (0.02%), MgSO 4 (0.002%) and urea (0.5%) at 30 • C and pH (7.0). Moreover, a significant catabolic induction of a laccase and azoreductase suggested its vital role in degrading DR81 into three distinct metabolites (intermediates) as by-products. Further, toxicity analysis of intermediates were performed using seeds of common edible plants, aquatic plant (phytotoxicity) and the nematode model (animal toxicity), which confirmed the non-toxic nature of intermediates. Thus, the inclusive study of DMS2 showed promising efficiency in bioremediation approach for treating industrial effluents.

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Section: Toxicity Analysismentioning

confidence: 99%

Degradation and Toxicity Analysis of a Reactive Textile Diazo Dye-Direct Red 81 by Newly Isolated Bacillus sp. DMS2

Amin¹,

Rastogi²,

Chaubey³

et al. 2020

Front. Microbiol.

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“…Several studies have been carried out on the degradation metabolism of toxic dye. Several metabolites generated through the degradation of dye molecules [19] [20]. Toxicity response of dye degradation product and parent dye must be measured because it can be extremely harmful for the aquatic as well to the terrestrial life.…”

Section: Toxicity Analysismentioning

confidence: 99%

Biodegradation of Azo Dye by Bacterial Species Isolated from Dye Contaminated Area of Jetpur, Gujarat

Bhalani¹,

Kasundra²,

Sherathia³

2022

Int. j. res. appl. sci. biotechnol.

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The varieties of synthetic azo dyes are widely used in textile industries to generate range of color tones in the textile and paper industries. Such textile dyes are toxic for the animals, birds and human along with environment. It is needful to remove those dyes from the effluent. The degradation of such dyes is accompanied by the involvement of dye degradating microorganisms. The purpose of this research is to isolate, identify, and screen bacterial species capable of decolorizing reactive pink, congo red, and malachite green. Soil and water samples were collected from the dye contaminated area of Jetpur, Gujarat, India. Dye degradating bacteria were isolated and selected through primary and secondary screening. The effect of yeast extract amount on the dye degradation properties of bacteria was examined using a visible spectrophotometer. After secondary screening MD2, MD8, MD20, MD31, MD33 and MD34 were selected for further analysis. All isolated are able to degrade reactive pink, congo red, and malachite green after 120hrs of incubation at a 4mgl-1 concentration of yeast extract. Dye degradation remains constant for 4 mgl-1 and 2 mgl-1 but gets reduced in 1 mgl-1 of yeast extract concentration. Wheat germination rate in control was 65% compared to 96%, 88%, and 85% in MD2, MD8, MD20 respectively. Sorghum germination rate in control was 62% while in isolates no MD31, MD33, MD34 were 96%, 87%, 83% and 65%.

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“…The abundance of microorganisms in nature offers a wealth of untapped possibilities for human welfare. Only degrading any toxic dye does not ful ll the ecological requirement: a few studies suggest that the dye degradation products are more hazardous than the dyes themselves (Misal & Gawai, 2018;Saini et al, 2018). Toxicity assessment of the end products obtained after any degradation process is crucial to validate the process's safety.…”

Section: Introductionmentioning

confidence: 99%

Exhaustive ecotoxicological evaluation of the product of malachite green biodegradation by Stenotrophomonas koreensis

Biswas,

Adhikary,

Subramanian

et al. 2024

Preprint

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Stenotrophomonas koreensis effectively biodegrades malachite green, a mutagenic, carcinogenic, and teratogenic dye, raising the need to assess the safety of its degradation products before environmental release. This study addresses the gap in previous research by comprehensively evaluating the toxicity profile of malachite green degradation by S. koreensis. It incorporates a diverse range of organisms from terrestrial and aquatic ecosystems to assess the environmental impact of chemical introductions precisely. In-silico toxicological analysis was conducted using the online servers SwissADME, GUSAR, and vNN-ADMET, and ecotoxicological studies, following OECD guidelines. Aquatic toxicity was tested on cyanobacteria Anabaena flos-aquae, zooplankton Daphnia magna, aquatic macrophyte Lemna minor, and zebrafish Danio rerio. Terrestrial contamination risks were assessed with soil bacteria Bacillus subtilis, Bacillus pumilus, earthworm Eisenia fetida, important crop plants Triticum aestivum, Lens culinaris, and model organism Mus musculus. Genotoxicity was evaluated with Allium cepa root tip cells, and MTT assays were performed on HaCat cell line. Results indicate the degradation product's significantly reduced toxicity compared to malachite green. This study underscores the importance of thorough toxicity assessment in ensuring the safe disposal of dye degradation products into the environment.

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Recent Advances in Microbial Remediation of Textile Azo Dyes

Cited by 6 publications

References 30 publications

Degradation and Toxicity Analysis of a Reactive Textile Diazo Dye-Direct Red 81 by Newly Isolated Bacillus sp. DMS2

Degradation and Toxicity Analysis of a Reactive Textile Diazo Dye-Direct Red 81 by Newly Isolated Bacillus sp. DMS2

Biodegradation of Azo Dye by Bacterial Species Isolated from Dye Contaminated Area of Jetpur, Gujarat

Exhaustive ecotoxicological evaluation of the product of malachite green biodegradation by Stenotrophomonas koreensis

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