The poultry industry produces a great amount of feather each
year especially with popular fast food such KFC and only a little
part of them is used as filler, adornment and forage. Although
the feather can be biodegraded, it not only needs large dumping
ground but also discharges the landfill leachate and pollution
gas. Thus if not treated in time it causes an environmentally disposal
problem [1]. Recently it is very common to hydrolyze keratin
in poultry feather with strong acid to produce amino acid in China,
but the process results in greatly acid pollution. Enzymatic catalysis
hydrolysis is a potentially alternative method, but up to date
owing to the outer protective film and compact structure, it is far
from industrial application. Therefore, it is very urgent to recycle
feather with eco-friendly way.