Catalase activity of fungal strains from the genera Penicillium, Aspergillus, and Trichoderma

Abstract

The catalase activity of fungi is particularly important, playing an essential role in protecting cells against oxidative stress by decomposing hydrogen peroxides. This enzyme contributes to maintaining cellular homeostasis and supports the adaptation of microbes to stressful environmental conditions. In addition, the antioxidant capacity of fungal strains has relevant applications in biotechnology, bioremediation and the pharmaceutical industry, offering prospects for the use of these microorganisms in industrial processes and fundamental research. In this study, a screening of 23 fungal strains from the genera Penicillium, Trichoderma and Aspergillus was performed to evaluate their catalase capacity. The results showed a variability of catalase activity between strains, with maximum values recorded in Penicillium spp. 18 and Trichoderma spp. 12 strains, highlighting differences in the capacity to neutralize oxidative stress between genera.