metallic silver nanoparticles have been reduced from silver nitrate by employing the extracellular enzymatic machinery of edible white button mushroom (agaricus bisporus). the physical properties of these particles, size and shapes have been determined using techniques like tem, ftir and xrd and were reported in our earlier report. but, what stands of paramount importance in the present context...

Various aspects of the participation of Fenton chemistry in biology and medicine are reviewed. Accumulated evidence shows that both hydroxyl radical and ferryl [Fe(IV)=O]2+ can be formed under a variety of Fenton and Fenton-like reactions. Some examples of metal-independent hydroxyl radical production are included. Extracellular Fenton reaction is illustrated by the white rot and brown rot wood...

S (PH D THESIS) Studies on extracellular metabolites of white rot basidiomycete involved in selective lignin degradation (Graduate School ofAgriculture, Laboratory ofBiomass Conversion, RISH, Kyoto University)

Basidiomycota brown rot fungus ( Fomitopsis pinicola ) and two white fungi Phlebia radiata , Trichaptum abietinum were cultivated on thin slices of spruce wood individually in interspecies combinations. Within 12 months, F. substantially decomposed observed as mass loss, also three-species However, through hyphal interactions negatively affected the brown-rot indicative iron reduction capacity ...

Our results show that all of the brown rot fungi tested produce oxalic acid in liquid as well as in semisolid cultures. Gloeophyllum trabeum, which accumulates the lowest amount of oxalic acid during decay of pine holocellulose, showed the highest polysaccharide-depolymerizing activity. Semisolid cultures inoculated with this fungus rapidly converted C-labeled oxalic acid to CO(2) during cellul...

Rubber wood (Hevea brasiliensis) was esterfied with phenylisothiocyanate, and dimensional stability, decay resistance, and photo stability of the modified wood was assessed. The chemically modified wood was characterized by FTIR and CP/MAS C NMR spectroscopy. Unmodified and modified samples were exposed to a brown rot (Polyporus meliae) and a white rot (Coriolus versicolor) fungus for 12 weeks....

Sclerotium rot was found on Cymbidium orchids at Seosan-si, Chungcheongnam-do, Korea, in July, 2010. Symptoms occurred on low leaves, which turned yellowish, after which the entire plant wilted. Severely infected plants were blighted and eventually died. White mycelial mats and sclerotia appeared on pseudobulbs. Based on the mycological characteristics and pathogenicity, the causal fungus was i...

The dry rot fungus, Serpula lacrymans, is one of the most important wood decay fungi in the built environment causing many hundreds of millions of pounds of damage each year in many countries around the world. This Basidiomycete is particularly common in countries of northern Europe especially where bad maintenance, particularly of old properties, and inappropriate design or alteration may resu...

Microbial metabolism of organosulfur compounds is of interest in the petroleum industry for in-field viscosity reduction and desulfurization. Here, dibenzyl sulfide (DBS) metabolism in white rot fungi was studied. Trametes trogii UAMH 8156, Trametes hirsuta UAMH 8165, Phanerochaete chrysosporium ATCC 24725, Trametes versicolor IFO 30340 (formerly Coriolus sp.), and Tyromyces palustris IFO 30339...

White rot fungi use a variety of mechanisms to accomplish the complete degradation of lignin and a wide variety of environmental pollutants. Both oxidative and reductive reactions are required for the metabolism of both lignin and environmental pollutants. The fungi secrete a family of peroxidases to catalyze both direct and indirect oxidation of chemicals. The peroxidases can also catalyze red...