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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"Caffeic acid"”.
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Modulation of soybean and maize antioxidant activities by Caffeic acid and nitric oxide under salt stress
… applied nitric oxide, exogenously applied caffeic acid and salt stress on the ontioxidant system in cereal (exemplified by maize) and legume (using soybean as an example) plants together with their influence on membrane integrity and cell death. This study investigates changes in H₂O₂ …
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Anti-oxidant Action and Anti-aging Activity of Phenylpropanoid Compounds
… and anti-inflammatory activity and effect of caffeic acid on wound healing in skin-incised mice. Materials & methods: The cinnamic acid derivaties, C_(6)-C₃ compounds, of Penylpropanoids are used. To investigegate the effects of anti-oxidant activity in cell free system, we measured DPPH …
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Poly-N-vinylamid-modifizierte Elektrode als Komponente eines spektroelektrochemischen Sensors für Catecholderivate
… – 700 nm. From the tested catechol derivatives, caffeic acid proved to be an adequate model compound for the poly(N-vinyl amide) modified spectroelectrochemical sensor. The electrochemically derived quinone of caffeic acid was detected by its pi-pi* transition at 400 nm. The hydrophobic caffeic …
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The Development of Coulostatic Charge Injection Techniques for High Performance Liquid Chromatography Analysis (Electrochemistry, Detection, Amperometry, Hplc)
… were used to quantitate 4 x 10('-11) moles of caffeic acid at a carbon paste electrode.
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ΜΕΛΕΤΗ ΤΩΝ ΧΗΜΙΚΩΝ ΣΥΣΤΑΤΙΚΩΝ ΤΟΥ ΦΥΤΟΥ GALIUM MELANANTHERUM BOISS
… THE PETROLEUM ETHER: B-CAROTENE (ISOLATED, FATTY ACIDS, STEROLS, 4- MONOMETHYLESTEROLS, 4,4'-DIMETHYLSTEROLS. IN THE METHANOL EXTRACT POLYPHENOLIC COMPOUNDS WERE EXTRACTED ACCORDING TO THE CHAVAUX- PARIS PROCEDURE. THE FOLLOWING COMPOUNDS HAVE BEEN ISOLATED AND IDENTIFIED: APIGENIN, KAEMPFEROL, …
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Key volatile and nonvolatile off-flavor characterization for nine different hemp protein powders
… from hulled seeds had significantly more ferulic acid in comparison to the whole hemp seed origin protein samples, which contained more coumaric and caffeic acid. Hulled hemp seed proteins contained more volatiles such as alcohols, furan, and pyrazines while the whole seed proteins powder …
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Interaction of milk proteins with kiwifruit and mixed fruit polyphenols : A dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Food Innovation at Lincoln University
… with smaller amounts of other phenols such as caffeic acid, gallic acid, protocatechuic acid, syringic acid, rutin and quercetin. The HPLC extraction was carried out in various step using 70% acetone followed by 8% TCA precipitation. Addition of milk to theses extracts showed a decrease in …
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Interactions Among Steroid and Xenobiotic Response Cascades in the Regulation of CYP6B1
… or the plant signaling molecule salicylic acid in combination with xanthotoxin resulted in in vitro transcription that was similar to treatment with either chemical alone, suggesting that the response cascades to aryl hydrocarbons, signaling molecules, and furanocoumarins are distinct. In …
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Influence of dietary antioxidants on luminal nitrite chemistry under conditions simulating the gastro-oesophageal junction
… species and (in the presence of ascorbic acid) nitric oxide (NO), which are both potentially mutagenics. Thus this study aimed to investigate the influence of ascorbic acid (AA), sodium thiocyanate (NaSCN), oxygen (O2) and pH (1.5, 2.5 and 3.0) on the nitrite chemistry in simulated gastric …
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Investigation of New Zealand Sauvignon Blanc Wine Using Trained Sensory Panels
… found in Sauvignon blanc wine: catechin, caffeic acid and quercetin. Results showed each polyphenol had a unique effect when blended with a specific aroma compound, either suppressing, accentuating, or showing little effect on the perception of the aroma compounds. The perception of MIBP, …
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NATURAL POLYPHENOLS AS LEAD COMPOUNDS IN THE SYNTHESIS OF ANTITUMOR AGENTS AND OTHER USEFUL PRODUCTS
… phenylpropanoid families, namely resveratrol or caffeic acid analogues. To this purpose we employed both chemical and enzymatic methods; in particular, metal-mediated reactions were used for the synthesis of nitrogenated lignans with a benxanthene core, whereas stilbenolignans were also obtained …
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Intestinal absorption and metabolism of bush tea major phenolic compounds exhibiting anti-diabetic activity.
… phylicoides were identified with para-coumaric acid identified for the first time. Three other major phenolic compounds; protocatechuic acid (PCA), caffeic acid (CA) and para-coumaric acid (p-CA), were demonstrated to cross the Caco-2 cell monolayer in significant amounts, with Papp values 4.52, …
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Agronomic and physiological impacts of irrigation frequency on green basil (Ocimum basilicum L.)
… increased the foliar phenolic composition (caffeic acid by 9% and 12%, and rosmarinic acid by 6% and 10%, respectively). Compared to WW plants, SDI increased biomass production (by 8% and 18% in leaf area and dry weight) but negatively affected quality (an undesirable peppery taste, with a …
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Chlorogenic and Caffeic Acids’ Impact on Formation of Fluorescent and Non-Fluorescent Advanced Glycation End-Products as a Function of Temperature
<p>The glycation of amino acids with carbonyl groups of reducing sugars produces advanced glycation end-products (AGEs). These AGEs can be harmful to health over time. The research objective was to compare the effects of 0-1.00 mM chlorogenic acid (CGA) and caffeic acid (CA) on AGEs formed in …
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NEUROPROTECTIVE STUDIES ON THE MPTP AND SOD1 MOUSE MODELS OF NEURODEGENERATIVE DISEASES
… shown that the naturally-occurring compound, caffeic acid phenethyl ester (CAPE), is efficacious for the treatment against neurodegeneration. Because of its versatile abilities, CAPE was chosen for this study as this compound may be able to target the pathogenic pathways shared by two …
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Quantification of Total Phenolic Content and Antioxidant Activity of Oat Cultivars Grown in South Dakota
… (DPPH) assay. Pure standards (tannic acid, quercetin, 5- hydroxyanthranillic acid, caffeic acid, ferulic acid, p-coumaric acid, and sinapic acid) were tested to allow for data interpretation and method validation. Total phenolic content ranged from 78.6 mg Tannic Acid Equivalents …
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Synthesis and biological evaluation of potential anti-cancer agents
… compounds of anti-cancer screening. A library of caffeic acid derivatives has been prepared by the Knoevenagel condensation of aldehyde and active methylene reagents. These products have been screened against two murine adenocarcinoma cell lines (MAC) which are generally refractive to standard …
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Using Esterase and Laccase Enzymes to Derivatize Bioactive Plant Phenolics for Altered Chemistry
… activity on a variety of phenolics including caffeic acid, ferulic acid, resveratrol, quercetin, morin, kaempferol and myricetin. Among the products formed by action on flavonols were dimers of quercetin, morin, and myricetin. Quercetin and myricetin dimers showed longer retention time on …
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NOVEL CINNAMIC ACID-BASED DEHYDROPOLYMERS FOR EMPHYSEMA: IN VITRO AND IN VIVO ASSESSMENT OF THEIR ACTIVITIES
… This project hypothesized that cinnamic acid-based dehydropolymers (DHPs), originally discovered as novel anti-coagulants, protect against emphysema through their potent triple inhibitory actions against oxidative stress, inflammation and elastase, some of the pathogenic mechanisms …
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