Propyl Gallate
نویسندگان
چکیده
The title compound, propyl gallate (III), is an important substance popularly used in the food, cosmetic and pharmaceutical industries. Current chemical syntheses of this compound are based on acylation supported by thionyl chloride, DIC/DMAP or Fischer esterification using a range homogenous heterogenous catalysts. In paper, efficient, green, straightforward, economical method for synthesizing potassium hydrogen sulfate, KHSO4, as acidic catalyst has been developed first time. addition, paper provides comprehensive spectral dataset especially new data DEPT 2D NMR (HSQC HMBC) spectra which not currently available literature.
منابع مشابه
Studies on the Food Additive Propyl Gallate: Synthesis, Structural Characterization, and Evaluation of the Antioxidant Activity
Studies on the Food Additive Propyl Gallate: Synthesis, Structural Characterization, and Evaluation of the Antioxidant Activity Jorge Garrido, E. Manuela Garrido, and Fernanda Borges* Departamento de Engenharia Química, Instituto Superior de Engenharia do Porto, 4200-072 Porto, Portugal CIQUP, Departamento de Química e Bioquímica, Faculdade de Cîencias, Universidade do Porto, 4169-007 Porto, Po...
متن کاملSynthesis of an Antioxidant n-propyl Gallate by Magnetic IronNanoparticles-bound Lipolase
A variety of nano-carriers, nano-particles, nano-fibers, nano-tubes etc. have displayed greater competence to mimic nanoscale environment for the enzyme as compared to microand macro-environments provided by traditional support carriers that have been commonly employed for enzyme immobilization. The porous structured beads (silica, alginate etc.), membranes and fibers (>100 μm) have some inhere...
متن کاملAntioxidant activity of propyl gallate in aqueous and lipid media: a theoretical study.
In this work, we have carried out a quantum chemistry and computational kinetics study on the reactivity of propyl gallate towards ˙OOH, ˙OOCH3 and ˙OOCHCH2 radicals, in aqueous and lipid media. We have considered three reaction mechanisms: hydrogen transfer (HT), radical adduct formation (RAF) and single electron transfer (SET). Rate constants and relative branching ratios for the different pa...
متن کاملn-Propyl gallate activates hypoxia-inducible factor 1 by modulating intracellular oxygen-sensing systems.
HIF-1 (hypoxia-inducible factor 1) is a master regulator of cellular adaptive responses to hypoxia. The expression and transcriptional activity of the HIF-1alpha subunit is stringently controlled by intracellular oxygen tension through the action of prolyl and asparaginyl hydroxylases. In the present study we demonstrate that PG (n-propyl gallate) activates HIF-1 and expression of its downstrea...
متن کاملSynthesis of antioxidant propyl gallate using tannase from Aspergillus niger van Teighem in nonaqueous media.
Tannase from Aspergillus niger van Teighem has been used for synthesis of food additive antioxidant propyl gallate by direct transesterification of tannic acid. The optimized yield of 86% was obtained by using simultaneously pH tuned enzyme, immobilized on Celite and using the right amount of water in the non aqueous media.
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ژورنال
عنوان ژورنال: Molbank
سال: 2021
ISSN: ['1422-8599']
DOI: https://doi.org/10.3390/m1201