Ultraviolet (UV) radiation induces DNA damage, oxidative stress, and inflammatory processes in human epidermis, resulting in inflammation, photoaging, and photocarcinogenesis. Adequate protection of skin against the harmful effect of UV irradiation is essential. In recent years naturally occurring herbal compounds such as phenolic acids, flavonoids, and high molecular weight polyphenols have ga...

Strain A81 of Nocardia corallina hydroxylates or demethylates p-anisic acid to p-hydroxybenzoic acid and isovanillic acid. It demethylates veratric acid to a mixture of vanillic and isovanillic acids. These are both demethylated to protocatechuic acid, which undergoes ring cleavage to afford beta-carboxy-cis-cis-muconic acid. The intermediacy of protocatechuic acid in the catabolic pathway of v...

The work described in this paper had two objectives. First, it was hoped that a more stable aroylglucuronide (veratroylglucuronide and anisoylglucuronide) than benzoylglucuronide (Quick, 1926; Pryde & Williams, 1933; Goebel, 1938) could be prepared for constitutional studies. In the second place, it was considered possible' that a comparative study of the metabolism of veratric acid (3:4-dimeth...

The anti-spasmodic drug mebeverine is used in the treatment of irritable bowel syndrome. It has been found to be unstable and rapidly metabolized to initially form mebeverine-alcohol and veratric acid. Mebeverine-alcohol is a precursor for a number of amphetamine-like compounds. Consequently, these, in addition to mebeverine and mebeverine-alcohol, can produce false-positive amphetamine immunoa...

A comprehensive procedure was established, which combined a high-performance liquid chromatography (HPLC) assay for the simultaneous quantification of 2″-O-β-L-galactopyranosylorientin (OGA) and veratric acid and a gravimetric analysis for the determination of the mass fraction of the floral parts (calyx, corolla, stalk, stamens and pistils and ovary) of Trollius chinensis, to investigate the d...

The effect of exogenous, highly diluted formaldehyde on the rate of demethylation/re-methylation of veratric acid by the bacteria Rhodococcus erythropolis was studied using electrophoretic and microscopic techniques. The activity of 4-O-demethylase, responsible for accumulation of vanillic acid, and the levels of veratric and vanillic acids were determined using capillary electrophoresis. Forma...

The existence of a redox cycle leading to the production of hydrogen peroxide (H(2)O(2)) in the white rot fungus Pleurotus eryngii has been confirmed by incubations of 10-day-old mycelium with veratryl (3,4-dimethoxybenzyl) and anisyl (4-methoxybenzyl) compounds (alcohols, aldehydes, and acids). Veratraldehyde and anisaldehyde were reduced by aryl-alcohol dehydrogenase to their corresponding al...

Veratryl alcohol can be oxidized to veratryl aldehyde or veratric acid with excellent selectivity and efficient conversion under acidic and alkaline conditions using Au nanoparticles and graphene quantum dot composites (Au/GQDs) as catalysts.

I n our preceding paper [1] we reported t h e isolation of a novel, amorphous ester alkaloid from Veratrum album subsp. lobelianum (BERNH.) Suessenguth. This al­ kaloid has been found, together with protoveratrine A, germitetrine and veratroylzygadenine in the ester alkaloid fraction [2]. Acetylveratroylgermine designated originally amorphous alkaloid [1] [a]f) + 6 . 6 ° (chloroform) has, accor...