Three cellulolytic bacterial strains were isolated fmm decomposing rice straw. They were able to utilize cellulose, rice straw powder and carboxymethylcellulose as substrates. Two of these strains, Listeria sp. and Enterobacter sp., were abundant during initial stages of decomposition whereas the other strain, Pseudomonas sp., became dominant towards the late stages of the process. Comparison of their endo-1,4-~l u c a n a s e (~I 1 u l a s e) activity by indirect methods indicated a higher level of enzymatic activity in the Pseudomonas sp. than in the other two strains. Release of glucose by saccharification of cellulose and carboxymethylcellulose was also higher with Pseudomonas sp. compared with Listeria sp.
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