Abstract:

Cellulase is one important enzyme which is widely used in energy, food, textile and paper making. It has significant meaning to solve the problem of energy crisis, food crisis and sustainable human development. In order to find out the perfect high-yield cellulase strains, the screening of solid environmental samples such as soil, humus, feces and the yeast of distiller, liquids environmental samples such as hot springs and polar oceans, organism samples such as insects, animals, plant tissue and fungus, were reviewed in this paper. And most of the cellulase strains were found out by different soil samples. At the same time, the following aspects should be strengthened to find out the ideal high-yield strains: (1) the samples should be the most favorable growth environment conditions of cellulase strains, (2) screen several different cellulase strains which had the same function for the relevant applied research, (3) screen the different soil environment samples as far as possible to choose a better cellulase enzyme.