Results 191 to 200 of about 23,498 (228)

Production of coumaric acid from sugarcane bagasse

Innovative Food Science and Emerging Technologies, 2009
Abstract Phenolic acids were released from sugarcane bagasse by alkaline hydrolysis at 30 °C for 4 h; The alkaline hydrolysates were ultrafiltrated, the permeates purified with anion exchange resin. The phenolic acids bound by the resin were desorbed by a mixture of water–ethanol–HCl solution (36: 60: 4) after washing the resin with water, ethanol ...
M Jackson
exaly   +2 more sources

Dichloro-p-coumaric Acid and Coumaric Acid: their Effect on the Geotropism of Roots

Nature, 1970
WE 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
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Solvation of p-Coumaric Acid in Water

The Journal of Physical Chemistry B, 2007
The 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., VandeVondele, J., Bolhuis, P.G., Meijer, E.J.   +3 more
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Electroanalytical Oxidation ofp‐Coumaric Acid

Analytical Letters, 2007
The 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, Novak, Ivana, Šeruga, Marijan, Oliveira-Brett, Ana Maria   +3 more
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Biotransformation of p-coumaric acid by Paecilomyces variotii

Letters in Applied Microbiology, 2006
To 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
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p -Coumaric acid esters from Tanacetum longifolium

Phytochemistry, 2003
Two 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, Vijay K, Kaul, Ruchi, Acharya, Leopold, Jirovetz   +3 more
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Synthesis and properties of coumaric acid derivative homo-polymers

Journal of Biomaterials Science, Polymer Edition, 2008
Poly(4-hydroxycinnamic acid) (P4HCA), poly(3-hydroxycinnamic acid) (P3HCA), poly(3-methoxy-4-hydroxycinnamic acid) (PMHCA) and poly(3,4-dihydroxycinnamic acid) (PDHCA) were synthesized by the thermal poly-condensation of the corresponding monomers, which are lignin precursors, coumaric acid derivatives consisting of cinnamoyl groups and different ...
Tran Hang, Thi, Michiya, Matsusaki, Dongjian, Shi, Tatsuo, Kaneko, Mitsuru, Akashi   +4 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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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
openaire   +3 more sources