Chicken feather is recognized as a solid waste generated from poultry farms and
is abundant in Namakkal district, Tamilnadu, India. Feather is commonly treated
by high temperature and pressure; it is used as animal food stuffs. However, feather
degradation by biological methods has been increasingly interested because of
environmental awareness. In this study, unidentified bacterial strains isolated
from soil samples. They had show ability of feather degradation by making a clear
zone around their colonies in FMA medium. The zoned isolates were identified by
morphological and biochemical tests. The Bacillus licheniformis were also examined
for keratinase production by shake flask fermentation in a basal medium containing
1% feather. The fermentation mediums were optimized. Fermentation process was
carried out at 37°C for 7 days at 150 rpm. Crude keratinase were extracted and
purified by salt precipitation, dialysis and column chromatography and measured
the activity of keratinase.
P. Tamilmani, A. Umamaheswari, A. Vinayagam and B. Prakash, 2008. Production of an Extra Cellular Feather Degrading Enzyme by Bacillus licheniformis Isolated from Poultry Farm Soil in Namakkal District (Tamilnadu)
. International Journal of Poultry Science, 7: 184-188.