Production, partial purification and efficacy of keratinase from Bacillus halotolerans L2EN1 isolated from the poultry farm of Himachal Pradesh as a potential laundry additive

Molecular strategies to enhance the keratinase gene expression and its potential implications in poultry feed industry

“…Random mutagenesis of Brevibacillus sp. strain ASS10II by UV light treatment led to the increased keratinase synthesis ( Devi et al, 2023 ). Furthermore, ethyl methanesulfonate-induced random mutagenesis of Candida parapsilosis resulted in a mutant strain that was superior to the original strain in terms of keratinolytic activities( Sharma et al, 2023 ).…”

“…Increased keratinase synthesis resulted from random mutagenesis of Brevibacillus sp . strain ASS10II by UV light treatment ( Devi et al, 2023 ). Candida parapsilosis that is produced by a mutant strain through ethyl methane sulfonate induced random mutagenesis showed tremendous keratinolytic activity than the original strain ( Sharma et al, 2023 ).…”

“…Increased keratinase synthesis resulted from random mutagenesis of Brevibacillus sp. strain ASS10II by UV light treatment ( Devi et al, 2023 ). Random mutagenesis of Candida parapsilosis is induced by ethyl methanesulfonate which would be proven better for keratinolytic activity ( Sharma et al, 2023 ).…”

Thermoactive metallo-keratinase from Bacillus sp. NFH5: Characterization, structural elucidation, and potential application as detergent additive

“…Keratin-rich materials, such as avian feathers, generated in large amounts from poultry-processing farms often constitute serious environmental concerns due to their potential for litter, the generation of foul odors, and the ability to harbor pathogens [ 5 ]. Mishandling of this type of waste has drawn the attention of environmentalists and other stakeholders worldwide, with the enactment of necessary acts to regulate their disposal and management and promote a cleaner environment [ 6 ]. Keratinous wastes have been converted into valuable products using physicochemical treatment methods to propagate resource efficiency and a globally competitive economy [ 7 ].…”

Chicken Feather Waste Valorization Into Nutritive Protein Hydrolysate: Role of Novel Thermostable Keratinase From Bacillus pacificus RSA27

“…Diverse groups of microorganisms are reported to produce keratinases (Kalia and Purohit, 2008 ), such as numerous Bacillus sp. (Gupta and Singh, 2013 ; Gupta et al, 2015 ; Dong et al, 2017 ; Hamiche et al, 2019 ; Nnolim et al, 2020b ; Almahasheer et al, 2022 ; Devi et al, 2022 ; Mazotto et al, 2022 ), Aspergillus oryzae (Farag and Hassan, 2004 ), Paecilomyces marquandii and Doratomyces microsporum (Gradisar et al, 2005 ), Streptomyces sp. (Tatineni et al, 2008 ), Stenotrophomonas maltophilia (Cao et al, 2009 ), Myrothecium verrucaria (Moreira-Gasparin et al, 2009 ), Thermoactinomyces sp.…”