Novel alkaline proteases from alkaliphilic bacteria grown on chicken feather

By A. Gessesse, R. Hatti-Kaul, B. Gashe, B. Mattiasson. 2003

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Sustainable Management of Keratin Waste Biomass: Applications and Future Perspectives (2016, background): “27% fat and 90% of proteins ( Kunert 2000; Sangali and Brandelli 2000; Gessesse et al. 2003).”
Potential application spectrum of microbial proteases for clean and green industrial production (2017, background): “Furthermore, keratinases may also help in the removal of keratinous soils particularly from collars of shirts, on which most proteases fail to act (Gessesse et al. 2003).”
Purification and Characterisation of Keratinase from a Thermotolerant Feather-degrading Bacterium (2005, methodology): “Therefore, this enzyme could be purified with a better yield and purity by using either affinity chromatography with keratin, or feather used as a column medium, or hydrophobic interaction chromatography as reported by Bockle et al. (1995), Gradisar et al. (2000) and Gessesse et al. (2003) .”
Feather-Degrading Bacteria: A New Frontier in Avian and Host–Parasite Research? (2008, background): “…Burtt and Ichida 1999, Whitaker et al. 2005 B. pumilis Wild bird Firmicutes Burtt and Ichida 1999 B. pseudofirmus Poultry farm soil Firmicutes Gessesse et al. 2003, Kojima et al. 2006 B. cereus Poultry waste Firmicutes Kim et al. 2001 Staphylococcus epidermidis Wild bird Firmicutes Shawkey…”