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Chlorogenic acid composition of instant coffees
The Analyst, 1984A method, based on high-performance liquid chromatography, is described for the determination of chlorogenic acid isomers in instant coffee. Identification of the individual components was assisted by the preparation of isomeric mixtures by the isomerisation of available compounds and quantification based on published ultraviolet molar absorptivities ...
L C, Trugo, R, Macrae
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Cognitive and neuroprotective effects of chlorogenic acid
Nutritional Neuroscience, 2016The aim of this review was to provide an overview of studies conducted to determine the effects of chlorogenic acid (CGA) on cognition and neurological health.A literature search was conducted using PubMed and various search terms including chlorogenic acid, CGA, memory, neuroscience, cognition, nutrition, antioxidant, pharmacokinetics, neuroprotection,
Erin, Heitman, Donald K, Ingram
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Effect of chlorogenic acid on hydroxyl radical
Molecular and Cellular Biochemistry, 2003Chlorogenic acid (CGA) is considered to act as an antioxidant. However, the inhibitory effects of CGA on specific radical species are not well understood. Electron spin resonance (ESR) in combination with spin trapping techniques was utilized to detect free radicals.
Lun-Yi, Zang +4 more
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Determination of Chlorogenic Acid
Nature, 1957SLOTTA AND NEISSER1 found that o-dihydroxy-phenolic compounds such as chlorogenic acid and caffeic acid could be oxidized quantitatively with an alkaline hypoiodate solution, and used this method for the determination of these acids in coffee. They found that for every mole of chlorogenic or caffeic acid, 10 gm.-atoms of iodine were required for ...
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Chlorogenic Acid UVA–UVB Photostability
Photochemistry and Photobiology, 2010AbstractChlorogenic acid is a natural potent antioxidant. It can be used in cosmetics formulations, but for this purpose its photochemical stability should be determined to ensure that the compound will not be degraded after UV radiation exposure. To evaluate this possibility, the concentration of a chlorogenic acid solution was determined by HPLC ...
Diogo P, Rivelli +5 more
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Journal of Biotechnology, 2005
Among 15 Aspergillus strains, Aspergillus niger BRFM 131 was selected for its high chlorogenic acid hydrolase activity. The enzyme was purified and characterized with respect to its physico-chemical and kinetic properties. Four chromatographic steps were necessary to purify the protein to homogeneity with a recovery of 2%.
Asther, Michèle +6 more
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Among 15 Aspergillus strains, Aspergillus niger BRFM 131 was selected for its high chlorogenic acid hydrolase activity. The enzyme was purified and characterized with respect to its physico-chemical and kinetic properties. Four chromatographic steps were necessary to purify the protein to homogeneity with a recovery of 2%.
Asther, Michèle +6 more
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Phytochemistry, 1966
Abstract Experiments in which potato tuber slices were maintained on a tracer amount of [α- 14 C]cinnamic acid and synthetic 3- 0 -cinnamoylquinic acid (pH adjusted to 6) showed that if this conjugate is a free intermediate in chlorogenic acid (3- 0 -caffeoylquinic acid) formation, then the active pool of the compound is very small and is contained ...
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Abstract Experiments in which potato tuber slices were maintained on a tracer amount of [α- 14 C]cinnamic acid and synthetic 3- 0 -cinnamoylquinic acid (pH adjusted to 6) showed that if this conjugate is a free intermediate in chlorogenic acid (3- 0 -caffeoylquinic acid) formation, then the active pool of the compound is very small and is contained ...
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Chlorogenic acid as a competitive inhibitor of indoleacetic acid oxidase
Archives of Biochemistry and Biophysics, 1957Abstract An enzyme system oxidizing indoleacetic acid was isolated from pea epicotyls. It had an optimal activity at pH 5.6. Chlorogenic acid was a competitive inhibitor for the oxidase in vitro. Caffeic acid inhibited IAA oxidase in a noncompetitive fashion, and quinic acid, the other moiety of chlorogenic acid, was inactive.
R S, RABIN, R M, KLEIN
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Chlorogenic acid-water complexes in chlorogenic acid containing food products
Journal of Food Composition and Analysis, 2022Piotr Holowinski +2 more
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On enzyme inhibition by oxidized chlorogenic acid
Life Sciences, 1964Abstract The inhibiting action of oxidized chlorogenic acid (Ox-CGA) on the activity of several enzymes has been investigated. A comparative analysis of the effects of Ox-CGA with those of p-hydroxy-mercuri-benzoate seems to exclude the -SH groups of the proteins as the main site of action of Ox-CGA.
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