One of the most economically viable processes for the bioconversion of many lignocellulosic waste is represented by white rot fungi. Phanerochaete chrysosporium is one of the important commercially cultivated fungi which exhibit varying abilities to utilize different lignocellulosic as growth substrate. Examination of the lignocellulolytic enzyme profiles of the two organisms Phanerochaete chrysosporium and Rhizopus stolonifer show this diversity to be reflected in qualitative variation in the major enzymatic determinants (ie cellulase, xylanase, ligninase and etc) required for substrate bioconversion. For example P. chrysosporium which is cultivated on highly lignified substrates such as wood (or) sawdust, produces two extracellular enzymes which have associated with lignin deploymerization. (Mn peroxidase and lignin peroxidase). Conversely Rhizopus stolonifer which prefers high cellulose and low lignin containg substrates produce a family of cellulolytic enzymes including at least cellobiohydrolases and β-glucosidases, but very low level of recognized lignin degrading enzymes.
Background: In recent years, nanotechnology research is emerging as cutting edge technology interdisciplinary with physics, chemistry, biology, material science and medicine. AuNPs and AgNPs are an important class of nanomaterial for a wide range of biomedical applications. Synthesis of AuNPs and AgNPs through biological route is preferred due to its environment-friendly and economic aspects. Mushrooms have been known for their nutritional values and used as medicines by humans for ages. In modern terms, they can be considered as functional foods which can provide health benefits beyond the traditional nutrients. The present study demonstrates an eco-friendly and low-cost method of biosynthesis of AuNPs and AgNPs using basidiomycetes mushroom fungal strains.
Materials and Methods:The antioxidant potential of the basidiomycetes mushroom fungal strains was analysed by total flavonoid content, FRAP assay, ABTS assay, Metal chelating activity, Phosphomolybdenum assay, Assay of superoxide radical scavenging activity, Free radical scavenging activity on DPPH along with the determination of total phenolic and tannin contents in the mushroom mycelial extracts. Results: The synthesized gold nanoparticles (AuNPs) silver nanoparticles (AgNPs) were confirmed by
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