Natural deep eutectic solvents (NADESs) considered as “green” solvents offer an efficient, safe, sustainable, and cost effective method alternative to conventional extraction while microwave assisted extraction (MAE) is a convenient, rapid, environmental friendly and efficient technique. The combination of NADESs with MAE was applied in this study for the recovery of phenolic compounds from oli...

Phenolic acids such as p-coumaric acid and microbial metabolites of poorly absorbed polyphenols are absorbed by the monocarboxylic acid transporter (MCT)-mediated transport system which is identical to the fluorescein/H(+) cotransport system. We focus here on the physiological impact of MCT-mediated absorption and distribution. We examined whether MCT1, the best-characterized isoform found in a...

Twelve analogues of the antibacterial phenolic peptide 5-S-glutathionyl-N-beta-alanyl-L-dopa (5-S-GA-L-D, 1) were synthesized via orthoquinone using tyrosinase. Several synthesized compounds inhibited the v-Src autophosphorylation tyrosine kinase reaction with an IC50 value comparable to that of herbimycin A. The inhibition of c-Src substrate phosphorylation was much less active than v-Src auto...

The reactivity of lignin model compounds under Mannich conditions with piperidine and formaldehyde was studied. The piperidinomethyl group was confirmed to be introduced quantitatively at sterically unhindered positions ortho to a phenolic hydroxyl when the substrate was allowed to react under ambient conditions. The sequential application of the Mannich reaction followed by quantitative P NMR ...

Raphanus, Brassicaceae, Phenylpropanoid Metabolism, Glucose Ester, Esterification. Protein extracts from seedlings of Raphanus sativus catalyze the transfer of the glucosyl moiety of UDP-glucose to the carboxyl group of phenolic acids. Enzymatic activity was determined spectrophotometrically by measuring the increase in absorbance at 360 nm and/or by the aid of high performance liquid chromatog...

Tyrosine decarboxylase (TyDC), a type II pyridoxal 5'-phosphate decarboxylase, catalyzes the decarboxylation of tyrosine. Due to a generally high sequence identity to other aromatic amino acid decarboxylases (AAADs), primary sequence information is not enough to understand substrate specificities with structural information. In this study, we selected a typical TyDC from Papaver somniferum as a...

We report a sono-Fenton strategy to mediate the supramolecular assembly of metal–phenolic networks (MPNs) as substrate-independent coatings using phenol and phenyl derivatives building blocks. The process is initiated from generation hydroxyl radicals (.OH) high-frequency ultrasound (412 kHz), while metal ions synergistically participate in production additional .OH for hydroxylation/phenolatio...

Phenolic compounds are industrial chemicals widely used in the manufacture of products. Most of them are generated artificially and are found in the wastewaters from chemical plants, exhaust gases from incinerators, the side stream smoke from cigarettes. They are easily adsorbed in humans, regardless of their form. High levels of phenols have been shown to have detrimental effects on animal hea...