Flavonoids - Chemistry
Research News and Information

Sunday, November 22, 2009

Structural characterization and identification of iridoid glycosides, saponins, phenolic acids and flavonoids in Flos Lonicerae Japonicae by a fast liquid chromatography method with diode-array detection and time-of-flight mass spectrometry.

29 Sep 2009 A fast liquid chromatography method with diode-array detection (DAD) and time-of-flight mass spectrometry (TOF-MS) has been developed for analysis of constituents in Flos Lonicerae Japonicae (FLJ), a traditional Chinese medicine derived from the ... Read more...

A rapid screening method for prenylated flavonoids with ultra-high-performance liquid chromatography/electrospray ionisation mass spectrometry in licorice root extracts.

29 Sep 2009 Due to their substitution with an isoprenoid group, prenylated flavonoids have an increased affinity for biological membranes and target proteins, enhancing their potential bioactivity. Although many prenylated flavonoids have been described, there ... Read more...

Simultaneous determination of myricitrin, hyperin, quercitroside, and quercetin in Folium Rhododendri Micranthi by RP-HPLC.

30 Aug 2009 A reversed-phase high-performance liquid chromatography method was established for the simultaneous determination of four major constituents, namely myricitrin, hyperin, quercitroside, and quercetin in Folium Rhododendri Micranthi. The optimal ... Read more...

Latest indexed articles for 'Flavonoids - Chemistry'

These are the very latest articles for this heading:

• Structural characterization and identification of iridoid glycosides, saponins, phenolic acids and flavonoids in Flos Lonicerae Japonicae by a fast liquid chromatography method with diode-array detection and time-of-flight mass spectrometry. 29 Sep 2009
• A rapid screening method for prenylated flavonoids with ultra-high-performance liquid chromatography/electrospray ionisation mass spectrometry in licorice root extracts. 29 Sep 2009
• Simultaneous determination of myricitrin, hyperin, quercitroside, and quercetin in Folium Rhododendri Micranthi by RP-HPLC. 30 Aug 2009
• Triterpenoids and flavonoids from celery (Apium graveolens). 30 Aug 2009
• Evaluation of the flavonoid oroxylin A as an inhibitor of P-glycoprotein-mediated cellular efflux. 30 Aug 2009
• Study of the interactions between a proline-rich protein and a flavan-3-ol by NMR: residual structures in the natively unfolded protein provides anchorage points for the ligands. 30 Aug 2009
• On the mechanism of photochromism of 4'-N,N-dimethylamino-7-hydroxyflavylium in pluronic F127. 11 Aug 2009
• Elderberry flavonoids bind to and prevent H1N1 infection in vitro. 10 Aug 2009
• Black-tea polyphenols suppress postprandial hypertriacylglycerolemia by suppressing lymphatic transport of dietary fat in rats. 10 Aug 2009
• Baicalin in radical scavenging and its synergistic effect with beta-carotene in antilipoxidation. 10 Aug 2009
• Antioxidant activity of the dihydrochalcones Aspalathin and Nothofagin and their corresponding flavones in relation to other Rooibos ( Aspalathus linearis ) Flavonoids, Epigallocatechin Gallate, and Trolox. 10 Aug 2009
• Glycosylation of dietary flavonoids decreases the affinities for plasma protein. 10 Aug 2009
• Simultaneous determination of five bioactive flavonoids in pericarpium Citri reticulatae from china by high-performance liquid chromatography with dual wavelength detection. 10 Aug 2009
• Quantitation of chafurosides A and B in tea leaves and isolation of prechafurosides A and B from oolong tea leaves. 10 Aug 2009
• Geranylated flavonoids from the roots of Campylotropis hirtella and their immunosuppressive activities. 10 Aug 2009
• A triple-emission fluorescent probe reveals distinctive amyloid fibrillar polymorphism of wild-type alpha-synuclein and its familial Parkinson's disease mutants. 9 Aug 2009
• Gene expression changes related to the production of phenolic compounds in potato tubers grown under drought stress. 3 Aug 2009
• The methoxylated flavones eupatorin and cirsiliol induce CYP1 enzyme expression in MCF7 cells. 30 Jul 2009
• Protective effects of red wine flavonols on 4-hydroxynonenal-induced apoptosis in PC12 cells. 30 Jul 2009
• Relationship between structure and antiproliferative, proapoptotic, and differentiation effects of flavonoids on chronic myeloid leukemia cells. 30 Jul 2009

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Technical information about 'Flavonoids'

Definition: A group of phenyl benzopyrans named for having structures like FLAVONES.

Registry Number: 0

Descriptor UI: D005419

Alternative terms: Flavonoids; 2-Phenyl-Chromenes; 2 Phenyl Chromenes; 2-Phenyl-Benzopyrans; 2 Phenyl Benzopyrans; Bioflavonoids;

Allowable Qualifiers: administration & dosage; adverse effects; analysis; antagonists & inhibitors; biosynthesis; blood; cerebrospinal fluid; chemical synthesis; classification; diagnostic use; economics; genetics; history; immunology; isolation & purification; metabolism; pharmacokinetics; pharmacology; physiology; poisoning; radiation effects; secretion; standards; supply & distribution; therapeutic use; toxicity; urine; chemistry; contraindications; agonists;

Tree Number: D03.438.150.266.450; D03.830.219.266.450;

History Note: 2004(1963)

Technical Notes: do not confuse with FLAVINS, pigments