Alpha-lipoic acid (ALA, thioctic acid), a naturally-occurring essential dithiol compound, has become common ingredient in many pharmaceutical and food supplement products (FSP), used oxidative stress-dependent pathologies; oral bioavailability of ALA is limited by pharmacokinetic particularities that reduce its therapeutic efficacy-reduced solubility, lack gastric stability hepatic degradation,...

interactive effect of plant growth regulators6-benzylaminopurine (bap) (0, 2, 4 and 8 µm) and1-naphtalene acetic acid (naa) (0, 0.05, 0.25 and 0.5µm) in van der salm (vs) medium was used to optimize in vitro propagation of rosa hybrida cv. iceberg.shoot proliferation and number of new leaves weremeasured as growth indicators. as the concentrationof bap was raised, growth rate increased with all...

[B(OH)3]0.78[B(OH)2(OSO3H)]0.22 or (BSA) was simply prepared by addition of chlorosulfonic acid to commercial boric acid at room temperature. This cheap and green solid acid was used as an efficient catalyst for synthesis of acylals from aldehydes under solvent-free conditions at room temperature.

[B(OH)3]0.78[B(OH)2(OSO3H)]0.22 or (BSA) was simply prepared by addition of chlorosulfonic acid to commercial boric acid at room temperature. This cheap and green solid acid was used as an efficient catalyst for synthesis of acylals from aldehydes under solvent-free conditions at room temperature.

a solid state fermentation method was used to utilize wheat straw as substrates for citric acid production by using aspergillus niger atcc 9142. the plackett burman design (pbd) of experiments was used to test the relative importance of the variables affecting production such as moisture content, age of spore, inoculum size, initial ph of substrate, methanol concentration, incubation temperatur...

A promising strategy to break through the selectivity-conversion limit of direct methane conversion achieve high yields is protection methanol via esterification a more stable methyl ester. We present an aerobic methane-to-methyl-ester approach that utilizes highly dispersed, cobalt-containing solid catalyst, along with significantly favorable reaction conditions compared existing homogeneously...

This article presents the results of research on leaching solid phosphorus-containing waste with humic acid. Such includes by-products electrothermal processing phosphate raw materials—phosphorus sludge and cottrel dust. Chemical X-ray diffraction analyses have been used to study their composition phase structure, according which these substances an amorphous structure. The phosphoric dust was ...

Human epidermis, hair, nails, and kidney as well as bovine and horses' hooves were found to contain a lipid fraction, which on thin-layer chromatography migrated slightly ahead of the cerebroside sulfate esters and gave the color reaction specific for sialic acid. This fraction was isolated from horse hoof, in which it constituted nearly half of the total lipids. The purified fraction contained...

Oligonucleotides containing a primary amino group at their 5'-termini have been prepared and further derivatised with amino specific probes. The sequence required is prepared using standard solid phase phosphoramidite techniques and an extra round of synthesis is then performed with N-monomethoxytrityl-0-methoxydiisopropylaminophosphinyl 3-aminopropan(1)ol. After cleavage from the resin, remova...