Cellulase was produced by growing Penicillium sp. NXP25 in liquid medium consisted of 5% com cob powder, 3% wheat bran, 0.35% nitrogen source No 10 and 0.3% calcium chloride.

• 青霉（Penicillium sp.；） NXP25在5%25玉米穗轴粉；3%25麦(?)