Abstract
The relationship between CO 2 evolution and the extent of ligninolytic and proteolytic activities of Phanerochaete chrysosporium grown on sugarcane bagasse pith was investigated. A crude extract from the solid state fermentation (SSF) system was obtained and manganese peroxidase (MnP), lignin peroxidase (LiP) and proteolytic activities were determined without further concentration. CO 2 evolution profile showed that MnP activity was expressed during the idiophase when glucose was limited, then decreased due to the protease activity. The respiratory quotient (QR) practically remained around one. This value was an indicator that the relation between CO 2 production and O 2 consumption was equimolar. This indicates that CO 2 generation was basically biotic.
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