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The “Breme” red onion:effects of home-storage methods on quercetin and quercetin-glycoside contents
Breme onion home-storage methods HPLC-MS/MS quercetin quercetin glycosides
2015/10/9
The “Breme” onion is a red-skinned cultivar growing in the northwest Italy. To date, its nutrient composition has not been described. In this study, we quantified the contents of quercetin (Q) and its...
HPTLC Profile of Quercetin Content of Common Bean (Uttarakhand) Landraces Growing in Uttarakhand
Common Bean Uttarakhand
2016/6/1
Methanol extracts of seeds of 20 Landraces of Phaseolus vulgaris L. grown in different regions of Uttarakhand, were analyzed for the quercetin content using High Performance Thin Layer Chromatograpy (...
Effects of Intestinal Microflora on the Bioavailability of Dietary Quercetin in Adult Mice
quercetin absorption intestinal microflora
2009/7/8
The effects of intestinal microflora on the bioavailability of dietary quercetin in adult mice were studied. The control group was given a casein diet and water ad libitum. The antibiotics-treated gro...
Distribution of Flavonols and Enzymes Participating in the Metabolism in Onion Bulbs: Mechanism of Accumulation of Quercetin and Its Glucosides in the Abaxial Epidermis
metabolism of quercetin glucosides onion bulbs quercetin
2009/7/7
Onion bulbs contain quercetin, quercetin 4'-glucoside (Q4'G) and quercetin 3,4'-diglucoside (Q3,4'G), almost all of which are localized in the abaxial epidermis of scales. There is a question of wheth...
Investigation and Identification of Antioxidative Flavonols, Quercetin and Kaempferol Glycosides in the Unused Parts of 10 Types of Food Plants Commonly Consumed in Japan
quercetin and kaempferol natural antioxidative flavonols unused part of food plant
2009/7/7
The antioxidative flavonols, quercetin and kaempferol in the unused parts of 10 types of food plants commonly consumed in Japan were determined by paper chromatography and ultraviolet spectroscopy. Th...
Absorption and Metabolism of Quercetin in Caco-2 Cells
Caco-2 cell conjugated derivatives electrochemical detector (ECD)
2009/7/7
We investigated the absorption and metabolism of quercetin, a typical flavonoid, in Caco-2 cells, which are obtained from a human colon adenocarcinoma cell line and have been used as a good model for ...
Quercetin Glucosides are Hydrolyzed to Quercetin in Human Oral Cavity to Participate in Peroxidase-Dependent Scavenging of Hydrogen Peroxide
H2O2-scavenging oral cavity peroxidase in saliva
2009/6/18
It has been reported that consuming food which contains flavonols is related to the decrease in risks to arteriosclerosis and cancer. One objective of this study was to elucidate the metabolism of que...
Oxidation of Quercetin by Salivary Components II. Effects of Quercetin on Reactive Oxygen Metabolism by Salivary Polymorphonuclear Leukocytes
oxygen metabolism quercetin salivary polymorphonuclear leukocyte
2009/6/17
Salivary polymorphonuclear leukocytes (SPMN) produce O2− and H2O2 reducing molecular oxygen, and quercetin is a phenolic compound found in vegetables and fruits. The aim of the present study was...
Oxidation of Quercetin by Salivary Components I. Salivary Peroxidase-Dependent Oxidation of Quercetin and Characterization of the Oxidation Products
oxidation products quercetin salivary peroxidase
2009/6/17
Quercetin glucosides ingested as components of a foodstuff can be transformed to quercetin, and the quercetin is oxidized by peroxidase in the oral cavity. One objective of this study was the characte...
Quercetin and the Glucosides Inhibit Nitration of a Salivary Component 4-Hydroxyphenylacetic Acid Catalyzed by Salivary Polymorphonuclear Leukocytes
4-hydroxyphenylacetic acid nitration quercetin
2009/6/17
Mixed whole human saliva contains 4-hydroxyphenylacetic acid (HPA), nitrite and polymorphonuclear leukocytes. Salivary leukocytes nitrated HPA to 4-hydroxy-3-nitrophenylacetic acid in the presence of ...
The influence of trans-resveratrol and quercetin on the activity of CYP1A2 in rat
trans-resveratrol quercetin CYP 1A2 rat
2014/3/3
Polyphenolic compounds are widely distributed in plants and are a common part of human diet. Polyphenols are known to be potent bioactive molecules, predominantly with protective effects. Many of xeno...