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  • Antioxidant
  • Other examples of compounds that fall under both the WBSSH and Quideau definitions include the black tea antioxidant theaflavin-3-gallate shown below, and the hydrolyzable tannin, tannic acid, shown above. (wikipedia.org)
  • tannins
  • Condensed tannins can undergo acid-catalyzed cleavage in the presence of a nucleophile like phloroglucinol (reaction called phloroglucinolysis), thioglycolic acid (thioglycolysis), benzyl mercaptan or cysteamine (processes called thiolysis) leading to the formation of oligomers that can be further analyzed. (wikipedia.org)
  • Condensed tannins from Lithocarpus glaber leaves have been analysed through acid-catalyzed degradation in the presence of cysteamine. (wikipedia.org)
  • difference
  • citation needed] Reade conjectured that the difference in sensitivity was caused by gallic acid used for tanning,[citation needed] and indeed by treating paper with gallic acid before soaking it in silver nitrate solution, he could drastically increase the sensitivity. (wikipedia.org)
  • synthesis
  • This work highlights the synthesis and characterization of PLAs using novel diethylzinc/gallic acid (ZnEt 2 /GAc) and diethylzinc/propyl gallate (ZnEt 2 /PGAc) catalytic systems that are safe for human body. (mdpi.com)
  • Gallic acid significantly inhibited both melanin synthesis and tyrosinase activity in a dose- and time-dependent manner, and decreased the expression of melanogenesis-related proteins, such as microphthalmia-associated transcription factor (MITF), tyrosinase, tyrosinase-related protein-1 (TRP1), and dopachrome tautomerase (Dct). (sigmaaldrich.com)
  • These results suggest that activation of the MEK/ERK, PI3K/Akt, and inhibition of Wnt/β-catenin signaling pathways is involved in the melanogenesis signaling cascade, and that activation by gallic acid reduces melanin synthesis via down-regulation of MITF and its downstream signaling pathway. (sigmaaldrich.com)
  • phenols
  • An alternate preparation involves treating para-chlorophenoldisulphonic acid with potassium hydroxide, a variant on the time-honored route to phenols from sulfonic acids. (wikipedia.org)
  • The acidity of the hydroxyl group in phenols is commonly intermediate between that of aliphatic alcohols and carboxylic acids (their pKa is usually between 10 and 12). (wikipedia.org)
  • linearity
  • The linearity ranges for gallic acid (100 to 600ng), quercetin (2000 to 7000ng) and lupeol (100 to 1200ng) with correlation coefficients (r-values) of 0.99968, 0.99708, 0.99971 respectively. (oalib.com)
  • antioxidant activity
  • Gallic acid (3,4,5-trihydroxybenzoic acid, GA) is a plant secondary metabolite, which shows antioxidant activity and is commonly found in many plant-based foods and beverages. (mdpi.com)
  • Moreover, this study determined the in vivo antioxidant activity of these compounds through the evaluation of superoxide dismutase (SOD) and catalase (Cat) activity, thiobarbituric acid-reactive substances (TBARS) and reduced glutathione (GSH) levels in mouse brain. (mdpi.com)
  • Kim, H.-J. Development of Gallic Acid-Modified Hydrogels Using Interpenetrating Chitosan Network and Evaluation of Their Antioxidant Activity. (mdpi.com)
  • Pathways
  • Gallic Acid Attenuates Platelet Activation and Platelet-Leukocyte Aggregation: Involving Pathways of Akt and GSK3 β ," Evidence-Based Complementary and Alternative Medicine , vol. 2012, Article ID 683872, 8 pages, 2012. (hindawi.com)
  • Inhibition of melanogenesis by gallic acid: possible involvement of the PI3K/Akt, MEK/ERK and Wnt/β-catenin signaling pathways in B16F10 cells. (sigmaaldrich.com)
  • gallate
  • The activity of laccase and lignin peroxidase excreted by A. oryzae was higher than that by P. chrysosporium in the presence of GA. Based on the results of high-performance liquid chromatography-electrospray ionization-mass spectrometry, three relevant intermediate metabolites were determined as progallin A, methyl gallate, and pyrogallic acid, implying that A. oryzae could not degrade GA unless the carboxyl in the molecule was protected or removed. (iwaponline.com)
  • reduced glutathione
  • However, it fails to improve reduced glutathione level in all given organs, while, Gallic acid pretreated mice showed significant improvement in SOD activity of kidney and spleen when compared to septic mice. (hindawi.com)
  • methods
  • The invention relates to thermographic elements that contain gallic acid as a developing agent and methods for imaging the thermographic materials using an infrared laser. (patentgenius.com)
  • Recently, as an emerging persistent dissolved organic pollutant (DOP), gallic acid (GA) and its efficient decomposition methods have received global attention. (iwaponline.com)
  • activity
  • Black raspberry seed and gallic acid show potent and broad antiviral activity against influenza A and B type viruses. (greenmedinfo.com)
  • The designed formulation (Fe 3 O 4 -PEG-GA) showed better anticancer activity than free gallic acid (GA). The results of the in vitro studies are highly encouraging to conduct the in vivo studies. (mdpi.com)
  • vitro
  • In this study we have redesigned our previously reported anticancer nanocomposite formulation with improved drug loading based on iron oxide magnetite nanoparticles coated with polyethylene glycol and loaded with anticancer drug gallic acid (Fe 3 O 4 -PEG-GA). The in vitro release profile and percentage drug loading were found to be better than our previously reported formulation. (mdpi.com)
  • Activation
  • Gallic acid could also lower the concentration of hydrocortisone required to inhibit the activation of DC. (mdpi.com)
  • Using inhibitors against PI3K/Akt (LY294002) or MEK/ERK-specific (PD98059), the hypopigmentation effect was suppressed, and the gallic acid-initiated activation of MEK/ERK and PI3K/Akt was also revoked. (sigmaaldrich.com)
  • Present
  • Present study is to investigate the effect of Gallic acid pretreatment on survival of septic animals and oxidative stress in different organs like lungs, liver, kidney, spleen, and vascular dysfunction of mice. (hindawi.com)
  • 7. The element of claim 1 wherein the gallic acid is present in an amount of about 5 to 25 wt. (patentgenius.com)
  • Patent
  • In 1854, Reade testified at the Talbot v. Laroche trial, where Laroche tried to prove that Talbot's calotype patent was invalid because the use of gallic acid was first discovered by Reade, from whom Talbot learned it. (wikipedia.org)
  • major
  • Gallic acid was the major active component from Cortex Moutan which could dose dependently inhibit interleukin (IL)-12 p40 and the functional cluster of differentiation (CD) surface markers CD40, CD80, CD83 and CD86 expression from cytokine cocktail-activated moDC. (mdpi.com)