Cellulase is a multienzyme system responsible for hydrolysis of
cellulose to glucose. It is commercially very important enzyme for the
generation of glucose from lignocellulosic waste. Production of glucose
is commercially viable process for the direct conversion of cellulosic
material to glucose. Cellulase can be synthesized and purified by the
growth of A. niger and other microbes under optimized condition which
could be used for the production of glucose, ethanol etc from
lignocellulosic waste for the benefit of mankind.