Results 191 to 200 of about 22,839 (231)

Spectroscopic studies on the antioxidant activity of p-coumaric acid

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2013
p-coumaric acid (4-hydroxycinnamic acid), a phenolic acid, is a hydroxyl derivative of cinnamic acid. It decreases low density lipoprotein (LDL) peroxidation and reduces the risk of stomach cancer. In vitro radical scavenging and antioxidant capacity of p-coumaric acid were clarified using different analytical methodologies such as total antioxidant ...
Kilic, Ismail, Yesiloglu, Yesim
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p-Coumaric acid abatement by ozone in aqueous solution

Water Research, 1995
Abstract The ozonation process of p-coumaric acid in aqueous solution is studied by identification and quantitative evaluation of intermediates and final oxidation products. In all the investigated pH range (2.0–8.0) the initial oxidation step is represented by the direct attack of ozone to the exocyclic double bond, following oxidation steps being ...
R. ANDREOZZI, CAPRIO, VINCENZO, M. G. D'AMORE, A. INSOLA   +3 more
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Goitrogenic activity of p‐coumaric acid in rats

Journal of Biochemical and Molecular Toxicology, 2003
AbstractThe effects of three natural phenolic acids (caffeic, ferulic, and p‐coumaric) on the rat thyroid gland were examined in a 3‐week oral‐treatment study. Forty male Wistar albino rats, divided into groups of 10 rats each and fed iodine‐rich diet, were administered by gastrointestinal tube saline (control), caffeic acid, ferulic acid, or p ...
Khelifi-Touhami, Fatima, Taha, Ragia A., Badary, Osama A., Lezzar, Alkassem, Hamada, Farid M.A.   +4 more
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Caffeic and coumaric acid esters from Calystegia soldanella

Fitoterapia, 2000
Esters of trans-4-hydroxycinnamic acid, cis-4-hydroxycinnamic acid and trans-3,4-dihydroxycinnamic acid with long-chain alcohols (n=15-20), were isolated from the stems of Calystegia soldanella.
M, Tori, Y, Ohara, K, Nakashima, M, Sono
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Tyrosinase inhibitory p‐Coumaric acid from Ginseng leaves

Phytotherapy Research, 1999
By bioassay-guided fractionation using mushroom tyrosinase, p-coumaric acid was characterized as the principal tyrosinase inhibitor from the fresh leaves of Panax ginseng (Araliaceae). It inhibited the oxidation of L-tyrosine more strongly than that of L-3, 4-dihydroxyphenylalanine (L-DOPA) by this enzyme.
J Y, Lim, K, Ishiguro, I, Kubo
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Benefits of p-coumaric acid in mice with rotenone-induced neurodegeneration

Metabolic Brain Disease, 2022
The paper examines the use of natural antioxidant and anti-inflammation substances as therapeutic candidates for brain disease. Para-coumaric acid (pCA), a phenolic compound with a variety of medicinal properties, was used against deterioration caused by various diseases.
Nurinee Dolrahman, Waritsara Mukkhaphrom, Jeanjira Sutirek, Wachiryah Thong-asa   +3 more
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Coumaric acid degradation by electro-Fenton process

Journal of Electroanalytical Chemistry, 2012
Abstract The degradation of the p-coumaric acid (CA, 4-hydroxycinnamic acid) has been investigated by electro-Fenton process. The electrolyses have been performed using an undivided cell equipped with a Ti/RuO 2 anode and a commercial graphite-felt to electrogenerate in situ hydrogen peroxide and regenerate ferrous ions as catalyst.
PANIZZA, MARCO, BARBUCCI, ANTONIO, CARPANESE, MARIA PAOLA, DELUCCHI, MARINA, CERISOLA, GIACOMO   +4 more
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Synthesis and Antifungal Activity of Anilides of Salicylic Acid and o-Coumaric Acid

Journal of Pharmaceutical Sciences, 1963
Abstract A series of o -hydroxycinnamanilides and the corresponding series of salicylanilide derivatives were prepared and tested for antifungal activity. These compounds were investigated for the purpose of determining the effect of vinylogy and also the effect of substitution on the anilide rings.
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A spectrophotometric study of the ionization of p-coumaric acid

Spectrochimica Acta, 1965
Abstract A spectrophotometric study of the ionized and un-ionized forms of the cis and trans stereoisomerides of p-coumaric acid in ethanol and water solution has been made. The complex spectra were interpreted by calculation of the corresponding incremental second derivative functions.
J.S. Challice, A.H. Williams
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Fluorometric determination of p-coumaric acid in beer

Journal of Agricultural and Food Chemistry, 1988
A new spectrofluorometric method to determine p-coumaric acid in beer has been developed. After the pH of the samples was adjusted to 2, impurities were extracted into hexane. Phenolics were then extracted into ethyl acetate, dried, and redissolved in water.
Francisco Garcia-Sanchez, Cristobal Carnero, Antonio Heredia   +2 more
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