Flavonols
Research News and Information

Monday, November 23, 2009

A fragmentation study of dihydroquercetin using triple quadrupole mass spectrometry and its application for identification of dihydroflavonols in Citrus juices.

30 Aug 2009 A mass spectrometric method using electrospray ionization with triple quadrupole and quadrupole time-of-flight hybrid (Q-Tof) mass spectrometry has been applied to the structural characterization of dihydroflavonols. This family of compounds has ... Read more...

Simultaneous identification of glucosinolates and phenolic compounds in a representative collection of vegetable Brassica rapa.

Aug 2009 Brassica raparapa group is widely distributed and consumed in northwestern Spain. The consumption of Brassica vegetables has been related to human health due to their phytochemicals, such as glucosinolates and phenolic compounds that induce a ... Read more...

Simultaneous determination of six herbal components in intestinal perfusate by high-performance liquid chromatography.

30 Jul 2009 An effective, accurate and reliable HPLC with UV detection method was developed and validated for quantitation of six components: baicalin, berberine hydrochloride, quercetin, kaempferol, isorhamnetin and baicalein in intestinal perfusate using ... Read more...

Latest indexed articles for 'Flavonols'

These are the very latest articles for this heading:

• A fragmentation study of dihydroquercetin using triple quadrupole mass spectrometry and its application for identification of dihydroflavonols in Citrus juices. 30 Aug 2009
• Simultaneous identification of glucosinolates and phenolic compounds in a representative collection of vegetable Brassica rapa. Aug 2009
• Simultaneous determination of six herbal components in intestinal perfusate by high-performance liquid chromatography. 30 Jul 2009
• Protective effects of red wine flavonols on 4-hydroxynonenal-induced apoptosis in PC12 cells. 30 Jul 2009
• Dietary polyphenols can modulate the intestinal inflammatory response. 29 Jun 2009
• Four flavonoids from Echinosophora koreensis and their effects on alcohol metabolizing enzymes. 24 Jun 2009
• Antioxidant properties of isolated isorhamnetin from the sea buckthorn marc. 30 May 2009
• Hyphenation of centrifugal partition chromatography with electrospray ionization mass spectrometry using an active flow-splitter device for characterization of flavonol glycosides. 30 May 2009
• Formation of UV-honey guides in Rudbeckia hirta. 24 May 2009
• Flavonol tetraglycosides from fruits of Styphnolobium japonicum (Leguminosae) and the authentication of Fructus Sophorae and Flos Sophorae. 13 May 2009
• Protective effect of isorhamnetin 3-O-beta-D-glucopyranoside from Salicornia herbacea against oxidation-induced cell damage. 11 May 2009
• Orosensory profiles and chemical composition of black currant (Ribes nigrum ) juice and fractions of press residue. 11 May 2009
• Arabidopsis thaliana expresses a second functional flavonol synthase. 8 May 2009
• Cytotoxicity of flavones and flavonols to a human esophageal squamous cell carcinoma cell line (KYSE-510) by induction of G2/M arrest and apoptosis. May 2009
• Validation and application of an LC-ESI-MS method for simultaneous determination of astilbin and its major metabolite 3'-O-methylastilbin in rat plasma. May 2009
• 3',4'-Dihydroxyflavonol prevents diabetes-induced endothelial dysfunction in rat aorta. May 2009
• An investigation of the fragmentation differences of isomeric flavonol-O-glycosides under different collision-induced dissociation based mass spectrometry. 29 Apr 2009
• Prenylflavonols from the leaves of Macaranga sampsonii. 29 Apr 2009
• 3',4'-Dihydroxyflavonol down-regulates monocyte chemoattractant protein-1 in smooth muscle: role of focal adhesion kinase and PDGF receptor signalling. 7 Apr 2009
• Method performance and multi-laboratory assessment of a normal phase high pressure liquid chromatography-fluorescence detection method for the quantitation of flavanols and procyanidins in cocoa and chocolate containing samples. 7 Apr 2009

See a longer list of these articles.

Technical information about 'Flavonols'

Definition: A group of 3-hydroxy-4-keto-FLAVONOIDS.

Registry Number: 0

Descriptor UI: D044948

Alternative terms: Flavonols; 3-hydroxy-4-keto-Flavonoids; 3 hydroxy 4 keto Flavonoids; 2-Phenyl-3-Hydroxy-Benzopyran-4-Ones; 2 Phenyl 3 Hydroxy Benzopyran 4 Ones;

Allowable Qualifiers: administration & dosage; adverse effects; analysis; antagonists & inhibitors; biosynthesis; blood; cerebrospinal fluid; chemical synthesis; classification; deficiency; 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: D03.438.150.266.450.284; D03.830.219.266.450.284;

History Note: 2004; for FLAVONOLS use FLAVONOLS (NM) 1977-2003