Results 31 to 40 of about 128,103 (312)

Antioxidant Activity of Quercetin and Its Glucosides from Propolis: A Theoretical Study

Scientific Reports, 2017
Among the multiple components of propolis, flavonoids contribute greatly to the antioxidant activities of propolis. Flavonoids mainly exist in the form of sugar-conjugated derivatives.
Yan-Zhen Zheng, Geng Deng, Qin Liang, Da-Fu Chen, Rui Guo, Rong-Cai Lai   +5 more
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Quercetin Attenuates Cardiac Hypertrophy by Inhibiting Mitochondrial Dysfunction Through SIRT3/PARP-1 Pathway

Frontiers in Pharmacology, 2021
Cardiac hypertrophy is an important characteristic in the development of hypertensive heart disease. Mitochondrial dysfunction plays an important role in the pathology of cardiac hypertrophy.
Wen-Jing Chen, Wen-Jing Chen, Yan Cheng, Wen Li, Xiao-Kang Dong, Jian-liang Wei, Chuan-Hua Yang, Yue-Hua Jiang   +7 more
doaj   +1 more source

Fast-dissolving core-shell composite microparticles of quercetin fabricated using a coaxial electrospray process [PDF]

, 2014
This study reports on novel fast-dissolving core-shell composite microparticles of quercetin fabricated using coaxial electrospraying. A PVC-coated concentric spinneret was developed to conduct the electrospray process.
Wang, ZH, Gareth R Williams, Chen Li, Yu, DG, Williams, GR, Zhuan-Hua Wang, Li, C, Gareth R. Williams, Deng-Guang Yu   +8 more
core   +1 more source

Prevention of quercetin precipitation in red wines: a promising enzymatic solution

OENO One, 2022
Flavonols are known for causing undesirable deposits in both red and white wines. Among flavonols, quercetin is widely considered the principal factor determining this phenomenon. One of the most accredited hypotheses claims that glycosylated derivatives
Veronica Vendramin, Daniele Pizzinato, Céline Sparrow, Daniele Pagni, Fabio Cascella, Claudio Carapelli, Simone   +6 more
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Deconjugation Kinetics of Glucuronidated Phase II Flavonoid Metabolites by B-glucuronidase from Neutrophils [PDF]

, 2010
Flavonoids are inactivated by phase II metabolism and occur in the body as glucuronides. Mammalian ß-glucuronidase released from neutrophils at inflammatory sites may be able to deconjugate and thus activate flavonoid glucuronides.
Arts, I.C.W., Pieter C. Dagnelie, Needs, P.W., Paul A. Kroon, Jaap Keijer, Paul W. Needs, Keijer, J., Kroon, P.A., Roger Bartholomé, Hollman, P.C.H., Dirk Roos, Ilja C.W. Arts, Haenen, G., Peter C.H. Hollman, Dagnelie, P.C., Guido Haenen, Roos, D., Bartholomé, R., Bast, A., Aalt Bast   +19 more
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Stability of quercetin in DMEM and cell culture with A549 cells

eFood, 2022
Quercetin is evidently unstable in Dulbecco's modified Eagle's medium (DMEM) at 37°C. However, the underlying mechanism of this instability is not clear yet. The stability and new degradation products of quercetin in DMEM at 37°C were investigated via in
Hui Cao, Petra Högger, Miguel‐Angel Prieto, Jesus Simal‐Gandara, Jianbo Xiao   +4 more
doaj   +1 more source

Protective Effect of Quercetin 3-O-Glucuronide against Cisplatin Cytotoxicity in Renal Tubular Cells

Molecules, 2022
Quercetin, a flavonoid with promising therapeutic potential, has been shown to protect from cisplatin nephrotoxicity in rats following intraperitoneal injection, but its low bioavailability curtails its prospective clinical utility in oral therapy.
Daniel Muñoz-Reyes, Alfredo G. Casanova, Ana María González-Paramás, Ángel Martín, Celestino Santos-Buelga, Ana I. Morales, Francisco J. López-Hernández, Marta Prieto   +7 more
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Quercetin-Mediated Silver Nanoparticle Formation for the Colorimetric Detection of Infectious Pathogens Coupled with Loop-Mediated Isothermal Amplification

, 2023
Here, quercetin-mediated silver nanoparticle (AgNP) formation combined with loop-mediated isothermal amplification (LAMP) was introduced to colorimetrically detect two major infectious pathogens, SARS-CoV-2 and Enterococcus faecium, using a foldable PMMA
Nae Yoon Lee (2524936), So Yeon Park (195028), Rajamanickam Sivakumar, So Yeon Park, Rajamanickam Sivakumar (5328026), Nae Yoon Lee   +5 more
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In vitro catabolism of quercetin by human fecal bacteria and the antioxidant capacity of its catabolites

Food & Nutrition Research, 2014
Background: Part of quercetin flows into the colon after escaping the absorption of the small intestine and will be degraded by colonic microbiota. The catabolites in the colon partially determine the physiological activity of quercetin.
Xichun Peng, Zhichao Zhang, Ning Zhang, Liu Liu, Shaoting Li, Hua Wei   +5 more
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PHYTOCHEMICAL STUDIES ON ASTER SQUAMATUS L. PART III: CONSTITUENTS OF THE LEAVES [PDF]

Bulletin of Pharmaceutical Sciences. Assiut University, 1986
From the air- dried powdered leaves of Aster squamatus L., we isolated and identified quercetin-3-methyl ether, quercetin-4'-methyl-ether, Kaempferol, quercetin, quercetin-3-O- diarabinoside, quercetin-3-methyl ether-4'-O- dirhamnoside, a saturated ...
S. Ross, H. Sayed
doaj   +1 more source