ABSTRACT
Biotransformation of bromosesquiterpenes was investigated with two types of fungi, Rhinocladiella atrovirens NRBC 32362 and also Rhinocladiella sp. K-001, isolated from the Okinawan brown alga Stypopodium zonale. R. atrovirens NRBC 32362 converted aplysistatin 1 into three compounds 5alpha-hydroxyaplysistatin 4, 5alpha-hydroxyisoaplysistatin 5 and 9beta-hydroxyaplysistatin 6. Transformation of 1, palisadin A 2 and 12-hydroxypalisadin B 3 by Rhinocladiella sp. K-001 gave two compounds, 3,4-dihydroaplysistatin 7 and 9,10-dehydrobromopalisadin A 8.
Subject(s)
Bromine Compounds/metabolism , Fungi/metabolism , Laurencia/chemistry , Plant Extracts/metabolism , Sesquiterpenes/metabolism , Biotransformation , Fungi/isolation & purification , Phaeophyceae/microbiologyABSTRACT
The biotransformation of 2-methylcyclohexanone (1) using 16 fungal strains and some mushroom cultures was investigated. Fusarium sp. was one of the effective biocatalysts for oxidoreduction of 2-methylcyclohexanone (1). cis-2-Methylcyclohexanol (2a) was isomerized to trans-2-methylcyclohexanol (2b) by Fusarium sp. In addition, the corresponding lactones 3 was obtained by Baeyer-Villiger oxidation using Fusarium sp. AP-2 (46%, 94% ee).
Subject(s)
Cyclohexanones/metabolism , Fusarium/metabolism , Biotransformation , Catalysis , Cyclohexanones/chemistry , Oxidation-Reduction , Time FactorsABSTRACT
The biologic degradation of 2,2-bis(4-hydroxyphenyl)propane (bisphenol A [BPA]; 1) was studied with 26 fungi. An initial BPA concentration of 40 ppm in an aqueous solution was degraded in the dark for 14 d. Among the 26 strains tested, 11 degraded BPA at 50% or more. Furthermore, four strains (F. sporotrichioides NFRI-1012, F. moniliforme 2-2, A. terreus MT-13, and E. nidulans MT-98) were more effective for degradation of BPA.
Subject(s)
Fungi/metabolism , Phenols/metabolism , Spores, Fungal/metabolism , Benzhydryl Compounds , Biodegradation, Environmental , Darkness , Gas Chromatography-Mass Spectrometry , Models, Chemical , Oxygen/chemistry , Species Specificity , Time FactorsABSTRACT
The biological degradation of 2,2-bis(4-hydroxyphenol)propane (1; bisphenol A, BPA), a representative endocrine disruptor, was studied with plant-cultured cells of Caragana chamlagu. An initial BPA concentration of 425 microM in an aqueous solution was degraded by C. chamlagu at 25 degrees C for 2 days in the dark, and two intermediates were then completely dissipated after 10 days.
