In the current project the ability of white-rot fungus Ganoderma lucidum IBL-05 was investigated for the decolourisation of some direct textile dyes. In the initial time course study maximum decolourisation (83.78 ± 5%) was observed for Solar golden yellow R at pH 4 and temperature 30 • C after 6th day. Various process parameters like optimum pH, incubation time, temperature and additional carbon and nitrogen additives were optimized to achieve maximum decolourisation of the dye by G. lucidum IBL-05. Addition of starch (1%) accelerated the dye decolourisation (96 ± 3%). All the nitrogen sources showed an inhibitory effect on dye decolourisation and enzyme induction. Manganese peroxidase (MnP) was found to be the only enzyme (256 ± 5 U/mL) secreted by G. lucidum IBL-05.On aétudié dans ce travail la capacité du champignonà pourriture blanche Ganoderma lucidum IBL-05à décolorer certaines teintures textiles directes. Dans cetteétude préliminaire, une décoloration maximale (83,78 ± 5%) aété observée pour le jaune doré Solar Rà un pH de 4 et une température de 30 degrés C après 6 jours. Divers paramètres de procédé comme le pH optimal, le temps d'incubation, la température et l'utilisation d'additifsà base de carbone et d'azote, ontété optimisés pour atteindre la décoloration maximale de la teinture par G. lucidum IBL-05. L'ajout d'amidon (1%) accélère la décoloration de la teinture (96 ± 3%). Toutes les sources d'azote montrent un effet inhibitoire sur la décoloration de la teinture et l'induction d'enzymes. On a trouvé que le peroxydase de manganèse (MnP)était la seule enzyme (256 ± 5 U/mL) sécrétée par G. lucidum IBL-05.
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