Protease with collagenolytic activity produced by Bacillus sp. DPUA 1728 from Amazonian soil

Qualitative analyses were carried out on solid medium with insoluble collagen 0.25% (w/v) to detect proteases with collagenolytic activity produced by Bacillus sp. In cultures incubated for 24 h, a 23 full factorial design with four repetitions at the center point was developed to analyze the effects and interactions between initial pH, temperature and the concentration of gelatin. Based on the results of the first 23 full factorial design, a successive 23 full factorial design was performed. The most favorable production conditions were found to be 1.5% (w/v) gelatin, pH 9.0 and 37 °C with e...