The distribution of endogenous gibberellins in Dwarf-1, a single gene dwarf mutant of Mexico 80-R red beans, was studied. Parallel extraction and fractionation of seeds of this mutant and those of a normal homozygous line followed by thin layer chromatography and bioassays using Rumex obtusifolius, wheat seed endosperm and dwarf bean plants revealed that a stem elongation control factor was con...

Sibiromycin, possessing strong antitumor activity in animal experiments, is produced by Streptosporangium sibiricum. Sibiromycin can be isolated from culture filtrate using ion-exchange or by solvent extraction. The antibiotic was obtained as a crystalline substance with ultraviolet absorption maximaat 230 and 310 nm, [a]D+525° (in dimethylformamide); the empirical formula-C24H31N3O7. In 1 N hy...

Previous studies with 31 strains of Serratia marcescens, including 28 reference O-serotype strains, have indicated that 19 of them have an acidic polysaccharide which copurifies with lipopolysaccharide during phenol-water extraction. Polysaccharide in crude extracts from 18 of the 19 strains was precipitated with Cetavlon (hexadecyltrimethyl ammonium bromide), and capsules were demonstrated aro...

The water immersion of Pterocarpus wood produces strong blue fluorescence, which comes from the extract. fluorescence contained in extract is interest for identification wood. We conducted an investigation into extraction solution and analyzed mechanism this species. Possible species fluorescent molecules are discussed based on mixture. Liquid chromatography mass spectrometry (LC-MS) used analy...

The aim of this work is to investigate extraction of ruthenium(III) from acidic aqueous solutions with phosphonium ionic liquids such as trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101), trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate (Cyphos IL 104) and tributyl(tetradecyl)phosphonium chloride (Cyphos IL 167) as extractants. The influence of HCl content in the fee...

liver nuclei was studied. After the injection of the radioactive carcinogens into rats, liver histone fractions Fl, F2al, F2a2, F2b, and F3 were isolated by selective acid extraction. DNA and acidic proteins were extracted with 4 M CsCl at pH 11.6 and 14 and were separated by equilibrium density centrifugation. Histones and acidic proteins were purified by Sephadex chiomatography. Maximum level...