Journal
ENZYME AND MICROBIAL TECHNOLOGY
Volume 31, Issue 1-2, Pages 179-186Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0141-0229(02)00097-2
Keywords
activated sludge; extracellular enzymatic activity; bio-availability; exopolymers; hydrolysis
Categories
Ask authors/readers for more resources
Our primary objective was to investigate the extent to which the diffusion of high molecular weight compounds through the matrix of exopolymers in activated sludge aggregates reduces their availability to the extracellular enzymes. We found that 17% Of L-Leu-aminopeptidase, 5% of alpha-glucosidase, 23% of protease and 44% of alpha-amylase activities were associated to the easily extractable extracellular polymeric substances (EPS) from the flocs. Surprisingly, when activated sludge flocs were dispersed by the use of both ultrasounds and a cation exchange resin, the rate of protein (azocasein, MW = 25,000) hydrolysis did not increase whereas the rate of polysaccharide (amylose azure, 32,000 < MW < 86,000) hydrolysis increased five-fold. (C) 2002 Elsevier Science Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available