Different organic solvents and detergents showed profound effects on the production of streptomycin (SM), amylases and proteases by Streptomyces griseus strains. The maximum SM production (1128 and 780 mg/L) was obtained using Streptomyces NRRL-strain when ethanol (1.0% v/v) and Tween-80 (0.1%v/v) were added to the medium. Production of amylases was also enhanced using the strain with the addit...

Glycol ethers are known to produce embryotoxic and teratogenic effects in a variety of animal species. In addition, testicular edema and tubular atrophy have been reported. The health effects of this class of compounds are not known in humans, despite the fact that these solvents are widely used in industry. In order to evaluate potential effects in humans, it is first necessary to estimate exp...

In the heterogeneous catalyst i-Pd(OAc)2(TPPTS)2, Pd(II) was reduced to Pd(0) by using different alcohol solvents, and catalyst’s activity studied in aerobic oxidation of benzyl alcohol. We effects impregnation time ethanol as a solvent use various alcoholic solvents on size palladium nanoparticles. found that reduction alcohols yielded nanoparticles were active As determined DLS, TEM, zeta pot...

Exposure to beryllium compounds, both by inhalation and skin contact, may result in immune sensitization and chronic beryllium disease. The objective of the present research work was to study the feasibility of removing beryllium compounds from the surfaces of devices made of Be-Cu alloy and to estimate the frequency at which the surfaces had to be rubbed in order to evaluate the likelihood tha...

effect of two different solvents , such as chx (cyclohexane) and thf (tetrahydrofuran) for iron carbonyle and also no. of acidic sites in the substrate (modenite with different sio2/al2o3 ratio 11, 17, 61) were investigated. by using chx as a solvent results in formation of smaller average particle sizes of iron or iron species, specially for the ratio of 17. most percentage of light hydrocarbo...

Because of the wide range of chemically and structurally diverse metabolites, efforts to survey the complete metabolome rely on the implementation of multiplatform approaches based on nuclear magnetic resonance (NMR) and mass spectrometry (MS). Sample preparation disparities between NMR and MS, however, may limit the analysis of the same samples by both platforms. Specifically, deuterated solve...

The use of the renewable platform molecule 5-hydroxymethylfurfural (5-HMF) in multi-component reaction with a diamine and an alkynone to generate seven-membered 1,5-benzodiazepines is described. Due sensitivity 5-HMF strong acidic basic conditions, investigation required in-depth revisit parameters as compared benchmark aldehydes. Among catalysts/solvents couples, ammonium acetate ethanol prove...

Finding an environment-friendly and affordable method to remove contaminated soils from Polycyclic Aromatic Hydrocarbons (PAHs) has now become an attractive field for researchers, with super-critical fluid extraction being an innovative process in the field of contaminated soil treatment. Extraction with super-critical fluid is a simple and rapid extraction process that uses super-critical flui...