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Antioxidant activities of new flavonoids from Cudrania tricuspidata root bark
These compounds showed remarkable radical scavenging effects against 1, 1-diphenyl-2-picrylhydrazyl (DPPH) and anti-lipid peroxidation efficacy on human low-density lipoprotein by TBARS assay. Expand
Screening of Korean herbal medicines used to improve cognitive function for anti-cholinesterase activity.
Methanolic extracts of seven herbs used in traditional Korean medicine for improvement of memory and cognition in old age were tested for cholinesterase inhibitory properties using the Ellman colorimetric method. Expand
Natural compounds, fraxin and chemicals structurally related to fraxin protect cells from oxidative stress
Fraxin recovered viability of HUVECs damaged by H2O2- treatment and reduced the lipid peroxidation and the internal reactive oxygen species level elevated by H 2O2 treatment and reverse transcription-PCR revealed that fraxin upregulated antiapoptotic genes and tumor suppressor gene. Expand
Anti-inflammatory phenylpropanoid glycosides from Clerodendron trichotomum leaves
The anti-inflammatory activity of these three phenylpropanoid compounds both in vitro (DPPH Reduction Assay, TBARS Assay on Cu 2+-induced oxidized LDL, PGE2 assay) and in vivo (acetic acidinduced vascular permeability in mice and carrageenan-induced hind paw edema in rats). Expand
Differentiation of Roots of Glycyrrhiza Species by 1 H Nuclear Magnetic Resonance Spectroscopy and Multivariate Statistical Analysis
1H NMR-based metabolomics technique. Partial least squares discriminant analysis (PLS-DA) was used as the multivariate statistical analysis of the 1 H NMR data sets. There was a clear separationExpand
Simultaneous determination of bioactive marker compounds from Gardeniae fructus by high performance liquid chromatography
This study established an analytical method that was useful to evaluate the quality control, and standardize quantification monitoring of 68 samples of Gardeniae fructus collected from Korea and China and proposed a new calculation for gardenoside and geniposide concentrations by analyzing their concentrations in Gardeniae Fructus. Expand
Antioxidative compounds from Quercus salicina Blume Stem
The chromatographic separation of MeOH extract from the Quercus salicina Blume Stem led to the isolation of five phenolic compounds, and all these compounds exhibited the antioxidative activity. Expand
Chemical fingerprinting of Codonopsis pilosula and simultaneous analysis of its major components by HPLC–UV
A simple and robust analytical method of three marker components lobetyolin, lobetyol, and tangshenoside I using HPLC–UV method for quality assessment of Codonopsis pilosula was developed. Expand
The antidiabetic effect of ginsenoside Rb2 via activation of AMPK
It is concluded that Rb2 may inhibit palmitate-induced gluconeogenesis via AMPK-induced SHP by relieving ER stress, a cause of gluc oneogenesis. Expand
Activity-guided isolation of saponins from Kalopanax pictus with anti-inflammatory activity.
Two novel saponin components, kalopanaxsaponin A and pictoside A, showed significant anti-inflammatory activity at the oral doses of 50 mg/kg. Expand