Review Article: Cellulases, Their Substrates, Activity and Assay Methods

At present, the problems of energy and environment have been a large obstacle for the development of human civilization. The current  predominant energy source, which is the fossil fuel supply, is limited in that it causes environmental pollution such as global green house effect. This was necessitated by the wide use of chemical means in sourcing for energy need of the steadily increasing human population. Hence, continuous efforts have been emphasized towards the solution of the energy supply depletion problems and environmental impacts caused by undwindling human activity, thus, the quest for alternative and environmentally friendly sources of energy, especially the use of enzymes such as cellulose necessited this survey.