A comparative study of the biosynthesis of CuNPs by Niallia circulans G9 and Paenibacillus sp. S4c strains: characterization and application as antimicrobial agents.

Background: Biosynthesis of metallic nanoparticles using microorganisms are a fabulous and emerging eco-friendly science with well-defined sizes, shapes and controlled monodispersity. Copper nanoparticles, among other metal particles, have sparked increased attention due to their applications in electronics, optics, catalysis, and antimicrobial agents.

Results: This investigation explains the biosynthesis and characterization of copper nanoparticles from soil strains, Niallia circulans G9 and Paenibacillus sp.

Production and statistical optimization of cholesterol-oxidase generated by Streptomyces sp. AN strain.

Background: Cholesterol oxidases (CHOs) have attracted enormous attention because of their wide biotechnological potential. The present study explores the production of CHOs by Streptomyces sp. AN.

Optimization and purification of mannanase produced by an alkaliphilic-thermotolerant N1 isolated from Bani Salama Lake in Wadi El-Natron.

An alkaliphilic-thermotolerant N1 isolated from Bani Salama Lake, Wadi El-Natron, Egypt, was proved to produce mannanase enzyme. Optimization of the fermentation medium components using Plackett-Burman design was applied. Glucose and inoculum size were found to be the most significant factors enhancing the production of the enzyme.