[Study of catalase and proteolytic activities of different variants of Bacillus mesentericus].

Catalase and proteolytic activity of the culures and morphological variants of Bacillus mesentericus fuscus, Bac. mesentericus vulgatus were studied. The variants were obtained as a result of prolonged cultivation of the stock strains in the potato mash under the layer of vaseline oil. The level of catalase activity varies in different morphological variants of the same culture, changes with age and depends on the storage conditions. The catalase activity in the rough, smooth and papillar variants that were freshly isolated from the potato mash was 1.5=2.5 times lower than that in the variants long kept on the agar medium. The quantitative indexes of the proteolytic activity of different variants also varied.