Mechri, S., Sellem, I., Bouacem, K., Jabeur, F., Chamkha, M., Hacene, H., Bouanane-Darenfed, A., Jaouadi, B., Antioxidant and enzyme inhibitory activities of Metapenaeus monoceros by-product hydrolysates elaborated by purified alkaline proteases. Waste Biomass Valori., 2020, 1–15.
Santha Kalaikumari, S., Vennila, T., Monika, V., Chandraraj, K., Gunasekaran, P., Rajendhrana, J., Bioutilization of poultry feather for keratinase production and its application in leather industry. J. Clean. Prod. 208 (2019), 44–53.
Zaraî Jaouadi, N., Rekik, H., Badis, A., Trabelsi, S., Belhoul, M., Ben Yahiaoui, A., Ben Aicha, H., Toumi, A., Bejar, S., Jaouadi, B., Biochemical and molecular characterization of a serine keratinase from Brevibacillus brevis US575 with promising keratin-biodegradation and hide-dehairing activities. PLoS One, 8, 2013, e76722.
Tesfaye, T., Sithole, B., Ramjugernath, D., Chunilall, V., Valorisation of chicken feathers: characterisation of physical properties and morphological structure. J. Clean. Product. 149 (2017), 349–365.
Daroit, D.J., Corrêa, A.P.F., Segalin, J., Brandelli, A., Characterization of a keratinolytic protease produced by the feather-degrading Amazonian bacterium Bacillus sp. P45. Biocatal. Biotransform. 28 (2010), 370–379.
Kang, D., Herschend, J., Al-Soud, W.A., Mortensen, M.S., Gonzalo, M., Jacquiod, S., Sørensen, S.J., Enrichment and characterization of an environmental microbial consortium displaying efficient keratinolytic activity. Bioresour. Technol. 270 (2018), 303–310.
Brandelli, A., Daroit, D.J., Riffel, A., Biochemical features of microbial keratinases and their production and applications. Appl. Microbiol. Biotechnol. 85 (2010), 1735–1750.
Zaraî Jaouadi, N., Rekik, H., Ben Elhoul, M., Zohra Rahem, F., Gorgi Hila, C., Slimene Ben Aicha, H., Badis, A., Toumi, A., Bejar, S., Jaouadi, B., A novel keratinase from Bacillus tequilensis strain Q7 with promising potential for the leather bating process. Int. J. Biol. Macromol. 79 (2015), 952–964.
Ben Elhoul, M., Zaraî Jaouadi, N., Bouacem, K., Allala, F., Rekik, H., Mechri, S., Khemir Ezzine, H., Miled, N., Jaouadi, B., Heterologous expression and purification of keratinase from Actinomadura viridilutea DZ50: feather biodegradation and animal hide dehairing bioprocesses. Environ. Sci. Pollut. Res. 28 (2021), 9921–9934.
Hassan, M.A., Abol-Fotouh, D., Omer, A.M., Tamer, T.M., Abbas, E., Comprehensive insights into microbial keratinases and their implication in various biotechnological and industrial sectors: a review. Int. J. Biol. Macromol. 154 (2020), 567–583.
Gupta, R., Ramnani, P., Microbial keratinases and their prospective applications: an overview. Appl. Microbiol. Biotechnol. 70 (2006), 21–33.
Gong, J.S., Wang, Y., Zhang, D.D., Zhang, R.X., Su, C., Li, H., Zhang, X.M., Xu, Z.H., Shi, J.S., Biochemical characterization of an extreme alkaline and surfactant-stable keratinase derived from a newly isolated actinomycete Streptomyces aureofaciens K13. RSC Adv. 5 (2015), 24691–24699.
Vidmar, B., Vodovnik, M., Microbial keratinases: enzymes with promising biotechnological applications. Food Technol. Biotechnol. 56 (2018), 312–328.
Babalola, M.O., Ayodeji, A.O., Bamidele, O.S., Ajele, J.O., Biochemical characterization of a surfactant-stable keratinase purified from Proteus vulgaris EMB-14 grown on low-cost feather meal. Biotechnol. Lett. 42 (2020), 2673–2683.
Chandrasekaran, M., Sathiyabama, M., Production, partial purification and characterization of protease from a phytopathogenic fungi Alternaria solani (Ell. And Mart.) Sorauer. J. Basic Microbiol. 54 (2014), 763–774.
Essien, J.P., Umoh, A.A., Akpan, E.J., Eduok, S.I., Umoiyoho, A., Growth, keratinolytic proteinase activity and thermotolerance of dermatophytes associated with alopecia in Uyo, Nigeria. Acta Microbiol. Imm. H. 56 (2009), 61–69.
Kshetri, P., Roy, S.S., Chanu, S.B., Singh, T.S., Tamreihao, K., Sharma, S.K., Ansari, M.A., Prakash, N., Valorization of chicken feather waste into bioactive keratin hydrolysate by a newly purified keratinase from Bacillus sp. RCM-SSR-102. J. Environ. Manage., 273, 2020, 111195.
Nnolim, N.E., Mpaka, L., Okoh, A.I., Nwodo, U.U., Biochemical and Molecular Characterization of a thermostable alkaline metallo-keratinase from Bacillus sp. Nnolim-K1. Microorganisms, 8, 2020.
Jaouadi, B., Zaraî Jaouadi, N., Rekik, H., Naili, B., Beji, A., Dhouib, A., Bejar, S., Biochemical and molecular characterization of Pseudomonas aeruginosa CTM50182 organic solvent-stable elastase. Int. J. Biol. Macromol. 60 (2013), 165–177.
Syed, D.G., Lee, J.C., Li, W.J., Kim, C.J., Agasar, D., Production, characterization and application of keratinase from Streptomyces gulbargensis. Bioresour. Technol. 100 (2009), 1868–1871.
Jaouadi, B., Abdelmalek, B., Fodil, D., Ferradji, F.Z., Rekik, H., Zaraî, N., Bejar, S., Purification and characterization of a thermostable keratinolytic serine alkaline proteinase from Streptomyces sp. strain AB1 with high stability in organic solvents. Bioresour. Technol. 101 (2010), 8361–8369.
Habbeche, A., Saoudi, B., Jaouadi, B., Haberra, S., Kerouaz, B., Boudelaa, M., Badis, A., Ladjama, A., Purification and biochemical characterization of a detergent-stable keratinase from a newly thermophilic actinomycete Actinomadura keratinilytica strain Cpt29 isolated from poultry compost. J. Biosci. Bioeng. 117 (2014), 413–421.
Puhl, A.A., Selinger, L.B., McAllister, T.A., Inglis, G.D., Actinomadura keratinilytica sp. nov., a keratin-degrading actinobacterium isolated from bovine manure compost. Int. J. Syst. Evol. Microbiol. 59 (2009), 828–834.
Ben Elhoul, M., Zaraî Jaouadi, N., Rekik, H., Omrane Benmrad, M., Mechri, S., Moujehed, E., Kourdali, S., El Hattab, M., Badis, A., Bejar, S., Jaouadi, B., Biochemical and molecular characterization of new keratinoytic protease from Actinomadura viridilutea DZ50. Int. J. Biol. Macromol. 92 (2016), 299–315.
da Silva, R.R., Different processes for keratin degradation: the ways for biotechnological application of keratinases. J. Agric. Food Chem. 66 (2021), 9377–9378.
Bouacem, K., Bouanane-Darenfed, A., Zaraî Jaouadi, N., Joseph, M., Hacene, H., Ollivier, B., Fardeau, M.L., Bejar, S., Jaouadi, B., Novel serine keratinase from Caldicoprobacter algeriensis exhibiting outstanding hide dehairing abilities. Int. J. Biol. Macromol. 86 (2016), 321–328.
Taibi, Z., Saoudi, B., Boudelaa, M., Trigui, H., Belghith, H., Gargouri, A., Ladjama, A., Purification and biochemical characterization of a highly thermostable xylanase from Actinomadura sp. strain Cpt20 isolated from poultry compost. Appl. Biochem. Biotechnol. 166 (2012), 663–679.
Saoudi, B., Habbeche, A., Kerouaz, B., Haberra, S., Ben Romdhane, Z., Tichati, L., Boudelaa, M., Belghith, H., Gargouri, A., Ladjama, A., Purification and characterization of a new thermoalkaliphilic pectate lyase from Actinomadura keratinilytica Cpt20. Process Biochem. 50 (2015), 2259–2266.
Kerouaz, B., Benamia, F., Habbeche, A., Saoudi, B., Haberra, S., Jaouadi, B., Boudelaa, M., Belghith, H., Gargroui, A., Ladjama, A., Modeling studies by response surface methodology on culture parameters optimization for keratinase production from Actinomadura keratinilytica Cpt20. Res. J. Biotechnol. 14 (2019), 58–65 https://www.medsci.cn/sci/show_paper.asp?id=0cd7e1191c13e311.
Lee, Y.S., Phang, L.Y., Ahmad, S.A., Ooi, P.T., Microwave-alkali treatment of chicken feathers for protein hydrolysate production. Waste Biomass Valori. 7 (2016), 1147–1157.
Cheong, C.W., Lee, Y.S., Ahmad, S.A., Ooi, P.T., Phang, L.Y., Chicken feather valorization by thermal alkaline pretreatment followed by enzymatic hydrolysis for protein-rich hydrolysate production. Waste Manag. 79 (2018), 658–666.
Al-Souti, A., Gallardo, W.G., Claereboudt, M., Gaafar, O., Effects of autoclaving, addition of sodium hydroxide and their combination on protein content and in vitro digestibility of chicken feathers. Int. J. Poul. Sci. 17 (2018), 356–361.
Jaouadi, B., Ellouz-Chaabouni, S., Ali, M., Messaoud, E., Naili, B., Dhouib, A., Bejar, S., Excellent laundry detergent compatibility and high dehairing ability of the Bacillus pumilus CBS alkaline proteinase (SAPB). Biotechnol. Bioprocess Eng. 14 (2009), 503–512.
Jaouadi, B., Aghajari, N., Haser, R., Bejar, S., Enhancement of the thermostability and the catalytic efficiency of Bacillus pumilus CBS protease by site-directed mutagenesis. Biochimie 92 (2010), 360–369.
Jaouadi, B., Ellouz-Chaabouni, S., Rhimi, M., Bejar, S., Biochemical and molecular characterization of a detergent-stable serine alkaline protease from Bacillus pumilus CBS with high catalytic efficiency. Biochimie 90 (2008), 1291–1305.
Bradford, M.M., A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal. Biochem. 72 (1976), 248–254.
Laemmli, U.K., Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature 227 (1970), 680–685.
DelMar, E.G., Largman, C., Brodrick, J.W., Geokas, M.C., A sensitive new substrate for chymotrypsin. Anal. Biochem. 99 (1979), 316–320.
Adler-Nissen, J., A review of food hydrolysis specific areas. Adler-Nissen, J., (eds.) Enzymic Hydrolysis of Food Proteins, 1986, Elsevier Applied Science Publishers, Copenhagen, Denmark, 57–109.
Zaraî Jaouadi, N., Jaouadi, B., Aghajari, N., Bejar, S., The overexpression of the SAPB of Bacillus pumilus CBS and mutated sapB-L31I/T33S/N99Y alkaline proteases in Bacillus subtilis DB430: new attractive properties for the mutant enzyme. Bioresour. Technol. 105 (2012), 142–151.
Tatineni, R., Doddapaneni, K.K., Potumarthi, R.C., Vellanki, R.N., Kandathil, M.T., Kolli, N., Mangamoori, L.N., Purification and characterization of an alkaline keratinase from Streptomyces sp. Bioresour. Technol. 99 (2008), 1596–1602.
Xie, F., Chao, Y., Yang, X., Yang, J., Xue, Z., Luo, Y., Qian, S., Purification and characterization of four keratinases produced by Streptomyces sp. strain 16 in native human foot skin medium. Bioresour. Technol. 101 (2010), 344–350.
Hamiche, S., Mechri, S., Khelouia, L., Annane, R., El Hattab, M., Badis, A., Jaouadi, B., Purification and biochemical characterization of two keratinases from Bacillus amyloliquefaciens S13 isolated from marine brown alga Zonaria tournefortii with potential keratin-biodegradation and hide-unhairing activities. Int. J. Biol. Macromol. 122 (2019), 758–769.
Ivanko, O.V., Varbanets, L.D., Purification and physico-chemical properties of Streptomyces sp. 1349 collagenase and Streptomyces sp. 1382 keratinase. Microbiol. J. 66 (2004), 11–24.
Bressollier, P., Letourneau, F., Urdaci, M., Verneuil, B., Purification and characterization of a keratinolytic serine proteinase from Streptomyces albidoflavus. Appl. Environ. Microbiol. 65 (1999), 2570–2576.
Riessen, S., Antranikian, G., Isolation of Thermoanaerobacter keratinophilus sp. nov., a novel thermophilic, anaerobic bacterium with keratinolytic activity. Extremophiles 5 (2001), 399–408.
Riffel, A., Brandelli, A., Bellato, Cd.M., Souza, G.H., Eberlin, M.N., Tavares, F.C., Purification and characterization of a keratinolytic metalloprotease from Chryseobacterium sp. kr6. J. Biotechnol. 128 (2007), 693–703.
Kublanov, I.V., Tsirul'nikov, K.B., Kaliberda, E.N., Rumsh, L.D., Haertle, T., Bonch-Osmolovskaia, E.A., Keratinase of an anaerobic thermophilic bacterium Thermoanaerobacter sp. strain 1004-09 isolated from a hot spring in the Baikal Rift zone. Mikrobiologiia 78 (2009), 79–88.
Jani, S.A., Heta, R., Patel, H., Darji, D., Rathod, A., Pal, S., Production and characterization of keratinolytic protease from Streptomyces sp. Int. J. Curr. Microbiol. App. Sci. 4 (2015), 962–975 https://ijcmas.com/vol-4-5/Shilpa%20Ashok%20Jani,%20et%20al.pdf.
Awad, H.M., Mostafa el, S.E., Saad, M.M., Selim, M.H., Hassan, H.M., Partial purification and characterization of extracellular protease from a halophilic and thermotolerant strain Streptomyces pseudogrisiolus NRC-15. Ind. J. Biochem. Biophys. 50 (2013), 305–311.
Ghorbel-Frikha, B., Sellami-Kamoun, A., Fakhfakh, N., Haddar, A., Manni, L., Nasri, M., Production and purification of a calcium-dependent protease from Bacillus cereus BG1. J. Ind. Microbiol. Biotechnol. 32 (2005), 186–194.
Zhang, J., Wang, J., Zhao, Y., Li, J., Liu, Y., Study on the interaction between calcium ions and alkaline protease of Bacillus. Int. J. Biol. Macromol. 124 (2019), 121–130.
Xu, Y., Lu, Y., Xing, Y., Xi, T., Characterization of solvent, detergent and oxidizing agent stable protease from isolated Antarctic marine Streptomyces sp. XE-1. Wei sheng wu xue bao = Acta Microbiol. Sinica 55 (2015), 311–320.
Bakhtiar, S., Estiveira, R.J., Hatti-Kaul, R., Substrate specificity of alkaline protease from alkaliphilic feather-degrading Nesterenkonia sp. AL20. Enzyme Microbial. Technol. 37 (2005), 534–540.
Rabab, O., Production of keratinases from Nocardiopsis sp. 28ROR as a nove Iraqi strain. Asian J. Pharm. Clin. Res. 10 (2017), 160–168.
Dayanandan, A., Kanagaraj, J., Sounderraj, L., Govindaraju, R., Rajkumar, G.S., Application of an alkaline protease in leather processing: an ecofriendly approach. J. Clean. Prod. 11 (2003), 533–536.
Kumar, A.G., Swarnalatha, S., Gayathri, S., Nagesh, N., Sekaran, G., Characterization of an alkaline active-thiol forming extracellular serine keratinase by the newly isolated Bacillus pumilus. J. Appl. Microbiol. 104 (2008), 411–420.