Lignocellulose degradation during solid-state fermentation: Pleurotus ostreatus versus Phanerochaete chrysosporium

Article Abstract:

Phanerochaete chrysosporium cells degrade lignocellulose faster when compared to Pleurotus ostreatus cells. A comparison of the solid-state fermentation of cotton stalk of both fungi showed P. chyrsosporium cells degraded 55% of the organic material within 15 days of incubation. P. ostreatus cells, which showed lignin selectivity, degraded only 20% in 30 days. C-lignin mineralization was exhibited by P. chrysosporium for 18 days releasing 12% of the total radioactivity. P. ostreatus, on the other hand, steadily released a total of 17% in 60 days. These results emphasize the importance of solid-state studies in the understanding of lignocellulose degradation.

Fungi, Cellulose

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Mineralization of polycyclic aromatic hydrocarbons by the white rot fungus Pleurotus ostreatus

Article Abstract:

The white rot fungus Pleurotus ostreatus mineralizes 14C-labeled compounds of catechol and polycyclic aromatic hydrocarbons (PAHs) to form 14C-labeled CO2. The PAHs that are mineralized include phenanthrene, pyrene, benzo(a)pyrene, anthracene, and fluorene. The enzymatic activities of the fungus involve the ligninolytic system, laccase, and the manganese-inhibited peroxidase. The mineralization of different compounds is different in a basidiomycetes rich medium and a basidiomycetes salt medium.

Observations, Polycyclic aromatic compounds, Pleurotus ostreatus, Biomineralization

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Effect of manganese on preferential degradation of lignin by Pleurotus ostreatus during solid-state fermentation

Article Abstract:

Addition of 30 to 620 micrograms of manganese per gram of cotton stalks appears to increase the preferential degradation of lignin in the stalks by the mushroom Pleurotus ostreatus. The dry-matter digestibility value increased from 53% to 65.4% with the addition of 600 micrograms of Mn(II) per gram of cotton stalks undergoing solid-state fermentation by P. ostreatus. Lignin selectivity was observed by comparing lignin and cellulose mineralization rates.

Analysis, Influence, Manganese, Manganese (Metal), Lignin

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