Results 281 to 290 of about 54,145 (321)

Synthesis and Antioxidant Activity of Hydroxycinnamic Acid Xylan Esters

Journal of Agricultural and Food Chemistry, 2010
Naturally occurring hydroxycinnamic acids, such as ferulic and sinapic acids, are known to possess antioxidant activity. In this study, ferulic acid and sinapic acid were covalently attached to oat spelt arabinoxylan and birch wood glucuronoxylan by esterification in a two-step feasible synthesis to generate modified xylans with various degrees of ...
Sipilä Jussi, Pitkänen Leena, Tenkanen Maija, Nousiainen Paula Annukka, Wrigstedt Pauli, Kylli Petri Tapio   +5 more
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ANODIC OXIDATION OF 4-HYDROXYCINNAMIC ACIDS

Chemistry Letters, 1979
Abstract Anodic oxidation of 4-hydroxycinnamic acids was carried out at a controlled potential vs. SCE (+900 or 840 mV), using an undivided cell, to afford the corresponding asatone or isoasatone-type compound as well as pinoresinol-type dilactones.
Masanobu Iguchi, Atsuko Nishiyama, Hideo Eto, Yukimasa Terada, Shosuke Yamamura   +4 more
openaire   +1 more source

Hydroxycinnamic Acids as Markers of Italian Blood Orange Juices

Journal of Agricultural and Food Chemistry, 1998
Extraction, resolution, and determination of the trans-hydroxycinnamic acids (caffeic, p-coumaric, ferulic, and sinapic) were performed in 82 orange juices derived from the most important blood and blond varieties grown in Italy. Soluble solids, acidity, and anthocyanins were also determined.
RAPISARDA P., CAROLLO G., FALLICO, Biagio, TOMASELLI F., MACCARONE E.   +4 more
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Esters and glucosides of hydroxycinnamic acids in vegetables

Journal of Agricultural and Food Chemistry, 1986
Identification et dosage, par chromatographie liquide haute performance, des esters des acides quinique, tartrique et malique, des esters du glucose et des glucosides des acides hydroxycinnamiques dans des tomates, piments, aubergines, epinards, betteraves potageres et autres ...
Michael Winter, Karl Herrmann
openaire   +1 more source

Antibacterial Activity of Selected Hydroxycinnamic Acids

Journal of Food Science, 1983
ABSTRACT The objective of this study was to determine the antibacterial effectiveness of selected hydroxycinnamic acids (caffeic, ferulic, pcoumaric) against Escherichia coli and Staphylococcus aureus at pH 5.0, 6.0 and 7.0 and
P. J. HERALD, P. M. DAVIDSON
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Hydroxycinnamic Acids

2022
Nicoleta-Gabriela Hădărugă, Daniel-Ioan Hădărugă   +1 more
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IDENTIFICATION OF HYDROXYCINNAMIC ACIDS IN THE HERB OF THE LETTER

ACHIEVEMENTS AND PROSPECTS OF CREATING NEW HERBAL MEDICINES
The dried herb of the medicinal letter was used as the object of the study (Betonica officinalis, sem. Clear-flowered - Lamiaceae). The herb of the letter was grown in the Penza region in the I. I. Sprygin Botanical Garden of Penza State University.
N.V. FINAENOVA, E.E. KURDYUKOV, I.YA. MOISEEVA, A.V. MITISHEV, A.V. SHCHEGOLKOVA   +4 more
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Hydroxycinnamic acid derivatives of rheum rhaponticum

Phytochemistry, 1970
Abstract Further work on the polyphenols of Rheum rhaponticum has led to the isolation of a range of hydroxycinnamic acid derivatives. Compounds identified were the 1-glucose esters of ferulic, sinapic and p -coumaric acids. Several other feruloyl derivatives were found, some of which must have complex structures.
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Sustainable Chemical Derivatization of Hydroxycinnamic Acids

ChemistrySelect
Abstract Green solvents like ethyl acetate and acetone convert hydroxycinnamic acids into natural and unnatural derivatives such as amides, esters, and other valuable synthetic intermediates. Employing as protection‐activation a system based on an alkyl chloroformate and N ...
Luigi Longobardo, Giovanni Di Fabio, Armando Zarrelli   +2 more
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Hydroxycinnamic acids ofAster salignus

Chemistry of Natural Compounds, 1975
N. V. Sergeeva, V. P. Mosina
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