Keskin Z.B.Kahraman H.2024-08-042024-08-0420221519-6984https://doi.org/10.1590/1519-6984.243189https://hdl.handle.net/11616/91697The effects of Calcium (Ca+2) on virulence and some parameters should be analyzed in this study. Pseudomonas aeruginosa Gram (-) and Bacillus cereus Gram (+) were used. Both bacteria are soil bacteria. In this study; the effect of Ca+2 on protease, amylase, LasB elastolytic assay, H2 O2, pyorubin and biofilm on metabolites of these bacteria were investigated during 24 hour time. In this study, the effect of Ca+2 on the production of some secondary metabolites on P. aeruginosa and B. cereus was investigated and presented for the first time by us. This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.eninfo:eu-repo/semantics/openAccessBacillus cereusCalciumPseudomonas aeruginosaSeconder metaboliteArticle823413357110.1590/1519-6984.2431892-s2.0-85108375920Q2