Results 151 to 160 of about 843,597 (196)
Some of the next articles are maybe not open access.
Dichloro-p-coumaric Acid and Coumaric Acid: their Effect on the Geotropism of Roots
Nature, 1970WE present here the first clear evidence that the positive geotropic response of roots can be prevented by dichloro-p-coumaric acid and p-coumaric acid.
T, Koizumi, H, Harada
openaire +2 more sources
Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences, 2011 The objective of this study was to adapt and improve an environmentally friendly and fast routine method for the analysis of ferulic and p-coumaric acids released from grass cell-walls by alkaline hydrolysis. This methodological development was performed
Stephanie Baumberger, Valerie Mechin
exaly +2 more sources
Solvation of p-Coumaric Acid in Water
The Journal of Physical Chemistry B, 2007The photoactive yellow protein (PYP) is an important model protein for many (photoactive) signaling proteins. Key steps in the PYP photocycle are the isomerization and protonation of its chromophore, p-coumaric acid (pCA). In the ground state of the protein, this chromophore is in the trans configuration with its phenolic oxygen deprotonated.
Leenders, E.J.M. +3 more
openaire +5 more sources
Biotransformation of p-coumaric acid by Paecilomyces variotii
Letters in Applied Microbiology, 2006To investigate the biotransformation of p-coumaric acid into p-hydroxybenzoic acid (p-HBA) by Paecilomyces variotii Bainier MTCC 6581.As a result of p-coumaric acid degradation by P. variotii, three phenolic metabolites, p-hydroxybenzaldehyde (p-HBAld), p-HBA and protocatechuic acid were formed. These phenolics were detected using TLC and HPLC.
A, Sachan, S, Ghosh, A, Mitra
openaire +2 more sources
Electroanalytical Oxidation ofp‐Coumaric Acid
Analytical Letters, 2007The mechanism of the electrochemical oxidation of p-coumaric acid on a glassy carbon electrode was investigated using cyclic, differential pulse and square wave voltammetry at different pHs. The oxidation of p-coumaric acid is irreversible over the whole pH range.
Janeiro, Patricia +3 more
openaire +4 more sources
p -Coumaric acid esters from Tanacetum longifolium
Phytochemistry, 2003Two new long chain alkyl p-coumaric acid esters (2-3) along with eicosanyl trans-p-coumarate (1) were isolated from chloroform extract of the roots of Tanacetum longifolium. The structures of new compounds were assigned as 21'-hydroxyheneicosanyl-4-hydroxy-(cis and trans) p-coumarate (2a, 2b) and 27'-hydroxy heptacosanyl-cis-p-coumarate (3) by ...
Umar, Mahmood +3 more
openaire +2 more sources
Goitrogenic activity of p‐coumaric acid in rats
Journal of Biochemical and Molecular Toxicology, 2003AbstractThe 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 +4 more
openaire +2 more sources
Spectroscopic studies on the antioxidant activity of p-coumaric acid
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2013p-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
openaire +3 more sources
p-Coumaric acid abatement by ozone in aqueous solution
Water Research, 1995Abstract 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 +3 more
openaire +3 more sources
Retention of coumaric acid by soil and its colloidal components
Water, Air, and Soil Pollution, 1990In this study of the behavior of coumaric acid added to soil, the disappearance of the acid was found to be due to adsorption plus microbial degradation, and was influenced by the concentration and contact time. Adsorption experiments set up with soils varying widely in their chemical and physical properties, showed that the Freundlich isotherm fits ...
Riffaldi R. +2 more
openaire +2 more sources