fallopia convolvulus/silica

On-line elution based TLC-MS is now a well-established technique, but the quality of the data obtained can sometimes be hampered by a severe spectral background or by strong ion suppression, especially when silica gel plates are used in combination with an acidic modifier in the developing solvent.

Four high silica zeolites, i.e., HSZ-385, 890, 960, and 990 were utilized for the selective catalytic conversion of bio-oil from Fallopia japonica to certain chemicals in a fixed-bed reactor. The Beta-type HSZ-960 zeolite showed the highest selectivity to hydrocarbons, especially to aromatics as

OBJECTIVE To investigate the chemical constituents in the herbs of Fallopia convolvulus. METHODS Its 80% ethanol extract was separated by means of silica gel and Sephadex LH-20 column chromatography to give twelve compounds, whose structures were identified by physicochemical properties and

We developed the first four HPTLC methods for the separation of proanthocyanidins according to degree of polymerization on HPTLC diol F_254S plates. Acetonitrile, ethyl acetate, ethyl acetate-formic acid (9:0.1, v/v) and toluene-acetone-formic acid (3:6:1, v/v) were used as developing

OBJECTIVE To study the chemical constituents from aerial parts of Fallopia dumetosum. METHODS The 80% ethanol extract was separated by means of silica gel and Sephadex LH-20 column chromatography. The compounds isolated from the plant were identified by physicochemical properties and spectroscopic