The Promising Keratin-Biodegradation and Hide-Dehairing Activities of the Keratinase KERUS from Brevibacillus Brevis Strain US575

Jaouadi, Nadia Zaraî; Rekik, Hatem; Badis, Abdelmalek; Trabelsi, Sahar; Belhoul, Mouna; Hila, Chiraz Gorgi; Irmani, Ahlem; Khemir, Haifa; Toumi, Abdessatar; Béjar, Samír; Jaouadi, Bassem

doi:10.1007/978-3-319-70548-4_45

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…Apart from these, Bacillus subtilis has also been shown to exhibit certain keratinolytic properties (Pillai et al, 2011) with chromium reducing efficiency (Basu et al, 2014). The keratinolytic activity shown by IS4 (B. brevis) was also previously reported particularly concerning chicken feathers which also correlates nicely with our present findings (Jaouadi et al, 2017). Interestingly, previous reports have also mentioned the presence of Bacillus cereus in tannery effluents and have also demonstrated its chromium removal ability which correlates to our findings as well (Kumari et al, 2016).…”

Section: Discussionsupporting

confidence: 91%

Bioremediation of Chromium (Vi) by a Microbial Consortium Isolated From Tannery Effluents and Their Potential Industrial Application

Bhattacharjee

Chaudhuri

Pandey

et al. 2021

Journal of Environmental Engineering and Landscape Management

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West Bengal has several leather industries and as such huge amount of leather are processed every year. The tannery effluents are discharged into the land and open water causing soil and water pollution respectively. Chromium is one of the most toxic inorganic contaminants which is well known for its carcinogenicity. Thus, our study focuses on investigating the bioremediation potential of common microflora isolated from tannery wastewater. In our study, Isolate 1 has the highest ability to reduce chromium (Cr6+) as compared to others. Isolate 4 has the highest protease, lipase and leather degradation activities. Isolate 1 shows the maximum keratinase activity making it an effective strain for keratinase production. Also, it has been found that pH 8 and temperature 40 °C was most suitable for keratinase production. Owing to the multidimensional ability of these two isolates, they were identified by 16S rRNA sequencing and it reveals that Isolate 1 and Isolate 4 belong to Bacillus cereus F4810/72 and Brevibacillus brevis F4810/72 respectively. Thus, this study establishes the role and efficiencies of these microorganisms in combatting pollution, particularly in the water bodies in which harmful chemicals leak regularly owing to improper waste management by various industries.

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Section: Discussionsupporting

confidence: 91%

Bioremediation of Chromium (Vi) by a Microbial Consortium Isolated From Tannery Effluents and Their Potential Industrial Application

Bhattacharjee

Chaudhuri

Pandey

et al. 2021

Journal of Environmental Engineering and Landscape Management

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“…The presence of sulphide, ammonia and other volatile compounds are toxic to environment. At the same time, it also results in solid waste, including animal skin trims, animal hairs, flesh wastes, and keratin wastes, whose protein content is responsible for dangerous pollution problems to environment (Jaouadi et al, 2018;Călin et al, 2017). There are many countries where leather industry brings social and economic benefits in daily lives, but on the other hand, the industry has a negative impact on environment (Kanagaraj et al, 2015;Elhoul et al, 2020;Wu et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Biodegradation of Skins and Hides by Keratinolytic Fungus Cladosporium sp.

Constantin¹,

Constantinescu²,

Ganciarov³

et al. 2022

Proceedings of the 9th International Conference on Advanced Materials and Systems

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As a result of population growth and changes in lifestyles, livestock and meat production is increasing throughout the world. Therefore, a large amount of keratinaceous waste is generated annually from food and leather industry. The conventional method of hair removal in the leather industry through all the chemical processes used creates a great concern for the environment, being a major contributor to the production of waste water. The enzymatic process through microorganism is an eco-friendly option to reduce the oxygen demands in leather processing. In biodegradation and bioremediation processes, waste or polluting products found in different waste substrate can be transformed or converted into unpolluted end products. Our experiments are related to the biodegradative potential of fungi in reducing and reusing waste from the leather industry. The aim of the present study was to evidence the biodegradative ability of the fungal strain Cladosporium sp. on keratin wastes.

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Section: Introductionmentioning

confidence: 99%

Proceedings of the 9th International Conference on Advanced Materials and Systems

2022

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The Promising Keratin-Biodegradation and Hide-Dehairing Activities of the Keratinase KERUS from Brevibacillus Brevis Strain US575

Cited by 5 publications

References 5 publications

Bioremediation of Chromium (Vi) by a Microbial Consortium Isolated From Tannery Effluents and Their Potential Industrial Application

Bioremediation of Chromium (Vi) by a Microbial Consortium Isolated From Tannery Effluents and Their Potential Industrial Application

Eco-Friendly Biodegradation of Skins and Hides by Keratinolytic Fungus Cladosporium sp.

Proceedings of the 9th International Conference on Advanced Materials and Systems

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