Extracellular myco-synthesis of nano-silver using the fermentable yeasts Pichia kudriavzeviiHA-NY2 and Saccharomyces uvarumHA-NY3, and their effective biomedical applications.

The progress of nanoparticles production by eco-friendly route, with desirable chemical and physical characteristics, and their application in helpful fields is still under investigation. Therefore, this study aimed at biosynthesis, characterization, and biomedical applications of silver nanoparticles (AgNPs) using yeasts metabolite. The yeast strains, Pichia kudriavzeviiHA-NY2 and Saccharomyces uvarumHA-NY3, were used for extracellular biosynthesis of AgNPsK and AgNPsU, respectively.

Immobilization of xylanase on modified grafted alginate polyethyleneimine bead based on impact of sodium cation effect.

Alginate- polyethyleneimine gel beads modified by using 0.3 M Na were used for covalent immobilization of Aspergillus flavus xylanase. SEM images showed distorted structure with addition of Na that impaired the egg-box structure formation offered much covalent binding with xylanase.