fallopia/ränidioksiid

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High performance thin-layer chromatography-mass spectrometry of Japanese knotweed flavan-3-ols and proanthocyanidins on silica gel plates.

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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.

Selective catalytic conversion of bio-oil over high-silica zeolites.

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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

[Chemical constituents from aerial parts of Fallopia convolvulus].

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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

High performance thin-layer chromatography-mass spectrometry methods on diol stationary phase for the analyses of flavan-3-ols and proanthocyanidins in invasive Japanese knotweed.

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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

[Chemical constituents from aerial parts of Fallopia dumetosum].

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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

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