Phytases are a group of enzymes that catalyze phytic acid hydrolysis with release of phosphorus (P). The ability of Chromobacterium sp. to produce phytase was detected in 115 out of 118 candidate bacteria isolated from different Brazilian biomas. This is the first report revealing the genus Chromobacterium as phytase producer.

As colicinas são compostos proteináceos produzidos por Escherichia coli e outros membros da família Enterobacteriaceae, sendo ativas, principalmente, contra bactérias mais relacionadas. São conhecidos pelo menos 34 tipos diferentes de colicinas, apresentando algumas delas características intrigantes. Nesta revisão são abordados os principais aspectos das colicinas das bactérias gram-negativas, explorando desde sua produção até ass suas aplicações práticas.

The colicins are protein compounds produced by, and active against, Escherichia coli and others members of Enterobacteriaceae family. At least 34 different colicins have been described and found to share an interesting number of features. In the present review we focus on the major characteristics of colicins of gram-negative bacteria and explore their production and practical applications.The colicins are protein compounds produced by, and active against, Escherichia coli and others members of Enterobacteriaceae family. At least 34 different colicins have been described and found to share an interesting number of features. In the present review we focus on the major characteristics of colicins of gram-negative bacteria and explore their production and practical applications.