Please enable JavaScript The solubility of vanillic acid in eight pure solvents, including ethanol, 1-propanol, 2-propanol, n-butanol, isobutanol, acetone, methyl acetate, water, and binary mixtures of water + ethanol have been measured at (293.15 to 323.15) K and atmospheric pressure by using a gravimetric method. Faiyaz Shakeel, Nazrul Haq, Nasir A. Siddiqui. Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Cytoprotective effect of the enzyme-mediated polygallic acid on fibroblast cells under exposure of UV-irradiation. Keerthi Srinivas, Jerry W. King, Luke R. Howard, and Jeana K. Monrad . High concentrations of O2 in perfluorodecalin not only increased lignin depolymerization but suppressed undesirable condensation reactions. View catalogue prices, chemical data, technical specifications and MSDS documents. Deactivation of Ferrylmyoglobin by Vanillin as Affected by Vanillin Binding to β-Lactoglobulin. We demonstrate for the first time non-catalytic, oxidative cracking with molecular oxygen (O2) to depolymerize native lignin into oxygenated phenolic monomers. The magic of aqueous solutions of ionic liquids: ionic liquids as a powerful class of catanionic hydrotropes. DOI: 10.1016/j.molliq.2016.04.095. High rates of oxidation are attributed to the use of perfluorodecalin as solvent. Gallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid with the formula C 6 H 2 3 CO 2 H. It is classified as a phenolic acid.It is found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants. Faiyaz Shakeel, Nazrul Haq, Nasir A. Siddiqui, Fars K. Alanazi, Ibrahim A. Alsarra. Optimization of the gallic acid extraction using ionic-liquid-based aqueous two-phase systems. Compared with other fruits, the concentrations of phenolic acids in kiwifruit are moderately low, at less than 10 mg/100 g FW (Mattila et al., 2006). They detected protocatechuic acid, p-coumaric acid, caffeic acid, ferulic acid, and vanillic acid. Intercalation of two phenolic acids in an ionic liquid–kaolinite nanohybrid material and desorption studies. Phenolic monomer production in perfluorodecalin favors high temperatures and short reaction times to prevent further oxidation of the produced monomers. Silvestre, Mara G. Freire, João A.P. Corresponding authors, a The solubility of gallic acid, vanillin, syringic acid, and protocatechuic acid in aqueous solutions of various concentrations of sodium sulfate was determined from (293.15 to 318.15) K at atmospheric pressure using a thermostatted reactor and HPLC analysis. The solubility data were accurately correlated to a semiempirical equation. Bingwen Long, Suwen Chen, Yu Xia, Zile Wang, Yigang Ding. You do not have JavaScript enabled. Increasing the reaction time further decreased the molecular weight, while increasing reaction time in an inert atmosphere increased the molecular weight of the lignin oil. P. Hafezisefat, J. K. Lindstrom, R. C. Brown and L. Qi, Department of Mechanical Engineering, Iowa State University, Ames, Iowa, USA, U.S. DOE Ames Laboratory, Iowa State University, Ames, Iowa, USA, Creative Commons Attribution 3.0 Unported The levels of syringic and vanillic acids were in reverse proportion to the total amount of phenolics soluble in methanol and a positive correlation between syringic and ferulic acid was observed. lqi@iastate.edu. Monomer yields were typically five-fold higher in perfluorodecalin compared to solvents more commonly employed in lignin conversion, such as methanol, butanol, acetonitrile, and ethyl acetate. Coutinho, Simão P. Pinho, Olga Ferreira. Solubility and thermodynamics of vanillin in Carbitol-water mixtures at different temperatures. Coutinho. that the correct acknowledgement is given with the reproduced material.