benzoquinone


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benzoquinone

[¦ben·zō‚kwə′nōn]
(organic chemistry)
References in periodicals archive ?
The main compounds of the cuticle (alkenes and terpenes) and the defensive secretion (benzoquinones) of this beetle have been characterized in previous chemical studies (7), and its adverse anti-inflammatory, cytotoxic, and genotoxic activities have been described (6-9).
Large quantities of HGA are excreted daily in the urine, where it oxidizes to benzoquinones, which in turn form the melaninlike polymers that cause the discoloration of urine.
It was found that, in the first 10 min of treatment, aromatic compounds (hydroquinone, benzoquinone, and catechol) are formed and after 120 min practically they have disappeared by its degradation to carboxylic acids (oxalic, maleic, succinic, fumaric, and formic).
Mealworm has been known to contain benzoquinone as a toxin which is secreted by defensive gland of Tenebrio moilor (Attygalle et al., 1991) However, supplementation of dried mealworm did not have significant effects on blood IgG and IgA concentration as immune response.
[2] It is a good donor of hydrogen molecules and metabolized by cytochrome P450 peroxidase to an active radical, forming a reactive compound called benzoquinone diamine.
The commonly recommended treatment is a dietary restriction of phenylalanine and tyrosine intake.[sup][4] High-dose Vitamin C is also widely used because it decreases urinary benzoquinone acetic acid.
are known pests of flour and are noted to be responsible for the production of substances like benzoquinone which is a potent carcinogen [11].
Quinones, specifically 2-methoxy benzoquinone (2-MBQ) and 2,6-dimethoxybenzoquinone (2,6-DMBQ), are the primary compounds responsible for fermented wheat germ's antiproliferative, antimetastatic, and immunological effects.
As for the degradation mechanism, phenol mainly gets oxidized to catechol and then benzoquinone before becoming water and carbon dioxide.
In P falciparum, the biosynthesis of ubiquinone or coenzyme Q involves two major steps: synthesis of the benzoquinone by the shikimate pathway and synthesis of the isoprene side chain by the MEP pathway.
2-methoxy benzoquinone and 2,6-dimethoxybenzene, the two major components of FWGE, are suggested to exert main biological properties of FWGE [14, 20].