화학공학소재연구정보센터
Applied Biochemistry and Biotechnology, Vol.50, No.3, 243-250, 1995
Partial Characterization of an Inducible Amylase Produced by Pseudomonas-Cellulosa - Scientific Note
The products secreted by Pseudomonas cellulosa were examined to determine if this bacterium could be used in a fluidized-bed bioreactor system to produce enzymes for converting waste cellulose to chemical feedstocks. P. cellulosa grows on a minimal salts medium supplemented with starch. P. cellulosa was found to secrete an amylase that was not produced when grown on media where cellulose was the only substrate. Therefore, the amylase produced by this bacterium is inducible, whereas production of cellulase was found to be constitutive. The amylase was found to have an apparent molecular weight of approx 97,000 Daltons. The activity of the amylase was found to be highest at alkaline pH values from 7.0 to 8.0, which is similar to the optimal pH for the cellulase.