Anaerobic benzoate degradation by the phototrophic bacterium Rhodopseudomonas palustris has been proposed to proceed via aromatic ring reduction reactions leading to cyclohex-1-ene-1-carboxyl-coenzyme A (CoA) formation. The alicyclic product is then proposed to undergo three beta-oxidation-like modifications resulting in ring cleavage. Illuminated suspensions of benzoate-grown cells converted [...

Abstract Increasing the surface hydrophilicity of polyetherimide (PEI) through partial hydrolysis imide groups while maintaining length main-chain was explored for adjusting its function in biomedical and membrane applications. The outcome polymer analogous reaction, i.e., degree ring opening chain cleavage, is difficult to address bulk microstructured systems, as these changes only occur at in...

Acetic acid-catalyxed cleavage of proanthocyanidins in the preaeace of phloroglucinol gives a series of 2R procyanidlnand prodelphfnidin-phIoroglucino~ adducta together with a novel 2s skis derivative implicating cleavage of the pyran ring and subsequent imersion of stereochemistry at C&. These Bavan4-phloroglucinoi adducta also suffer dehydration to producb with novel fused dihydro&ozopyrandih...

Brevibacterium sp. strain DPO 1361 oxygenates dibenzofuran in the unusual angular position. The 3-(2-hydroxyphenyl)catechol thus generated is subject to meta ring cleavage in the proximal position, yielding 2-hydroxy-6-(2-hydroxyphenyl)-6-oxo-2,4-hexadienoic acid, which is hydrolyzed to 2-oxo-4-pentenoate and salicylate by 2-hydroxy-6-oxo-6-phenyl-2,4-hexadienoic acid hydrolase. The proximal mo...

Co-metabolic degradation of monofluorobenzoates was carried out by a mixed soil population in a basal salts medium. The monofluorobenzoates did not support growth of microorganisms but were shown to be subject to ring cleavage as a result of microbial activity. Rate of ring cleavage was increased by use of the co-substrate enrichment technique using glucose as the co-substrate. Results indicate...