Studies on the beta-glucuronidase production of Clostridia.

We investigated the beta-glucuronidase-producing capacity of 197 strains of 19 different species of Clostridia, using the procedure described by Kilian and Bülow (8). Most of the Hobbs' serotyped strains of Clostridium perfringens (104 out of 109 strains) were found to produce beta-glucuronidase, whereas non-serotyped strains (21 out of 32 strains) did not. Some strains of other species such as Clostridium beijerinckii (C. beijerinckii), C. clostridiforme, C. difficile, C. limosum, and C. ramosum were found to produce beta-glucuronidase, while all strains of 13 other species which we examined did not.