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Prijava / prijava
Preparative high-speed counter-current chromatography (HSCCC) was successfully used for isolation and purification of quercetin-3-O-L-rhamnoside from the ethyl acetate extract of the leaves of Acer truncatum Bunge using a two-phase-system composed of ethyl acetate-ethanol-water at a volume ratio of
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This study is the first to report the use of response surface methodology to improve phenolic yield and antioxidant activity of Acer truncatum leaves extracts (ATLs) obtained by ultrasonic-assisted extraction. The phenolic composition in ATLs extracted under the optimized conditions were
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OBJECTIVE
To study the chemical constituents from the leaves of Acer truncatum.
METHODS
Various chromatographic techniques were used to isolate and purify the constituents. The structures of these compounds were elucidated on the basis of spectral analysis.
RESULTS
Seven compounds were isolated and
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