SUN, T., LIU, B.H. and LI, Z.H., 1996. A novel design of solid state fermenter and its evaluation for cellulase production by Trichoderma viride SL-1. Biotechnology Techniques, 10 (11), pp.889-894
A novel design of a large scale solid state fermenter, designated as PPSSF--Periodic Pressure
Solid State Fermenter-- was constructed. Due to the respiration created by periodical variations of
air pressure, air was uptaken / expelled from the fermenting mass and heat moved from the
fermenter easily. It is possible to operate the unit at different capacities simply by adding or
removing the bins. The results of its evaluation for enzyme formation by Trichoderma viride SL-1
indicated that a 2-3 fold increased cellulase production can be obtained in this system.