Publications

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three-steps in one-pot: whole-cell biocatalytic synthesis of enantiopure (+)- and (-)-pinoresinol via kinetic resolution.pinoresinol is a high-value plant-derived lignan with multiple health supporting effects. enantiomerically pure pinoresinol can be isolated from natural sources, but with low efficiency. most chemical and biocatalytic approaches that have been described for the synthesis of pinoresinol furnish the racemic mixture. in this study we devised a three-step biocatalytic cascade for the production of enantiomerically pure pinoresinol from the cheap compound eugenol. two consecutive oxidations of eugeno ...201627160378
biocatalytic properties and structural analysis of eugenol oxidase from rhodococcus jostii rha1: a versatile oxidative biocatalyst.eugenol oxidase (eugo) from rhodococcus jostii rha1 had previously been shown to convert only a limited set of phenolic compounds. in this study, we have explored the biocatalytic potential of this flavoprotein oxidase, resulting in a broadened substrate scope and a deeper insight into its structural properties. in addition to the oxidation of vanillyl alcohol and the hydroxylation of eugenol, eugo can efficiently catalyze the dehydrogenation of various phenolic ketones and the selective oxidati ...201627123962
fungal leaching of valuable metals from a power plant residual ash using penicillium simplicissimum: evaluation of thermal pretreatment and different bioleaching methods.each year a tremendous volume of v-ni rich ashes is produced by fuel oil consuming power plants throughout the world. recovery of precious metals existing in these ashes is very important from both economic and environmental aspects. the present research was aimed at investigating bioleaching potential of penicillium simplicissimum for the recovery of metals from power plant residual ash (ppr ash) using different bioleaching methods such as one-step, two-step, and spent-medium bioleaching at 1% ...201627095291
the nonylphenol biodegradation study by estuary sediment-derived fungus penicillium simplicissimum.nonylphenols (nps) are persistent organic pollutants (pops) with estrogenic properties that can perform endocrine-disrupting activities. by using high-concentration np as environmental selection pressure, one np biodegradation strain named npf-4 was isolated and purified from estuary sediment of the moshui river. it was identified as penicillium simplicissimum (ps1) by appearance and 18s rdna analysis. in different culture situations, the strain mass growth and biodegradation ability were evalua ...201627094271
tolerance to heavy metals in filamentous fungi isolated from contaminated mining soils in the zanjan province, iran.in the present study the population of fungi inhabiting metal contaminated soil samples from lead-zinc mining area was investigated, and their tolerance and biosorption capacity towards cd, pb, zn and cu were evaluated. fungal species, including acremonium persicinum, penicillium simplicissimum, seimatosporium pistaciae, trichoderma harzianum, alternaria chlamydosporigena and fusarium verticillioides were isolated. fungal tolerance was determined by measuring of the "minimum inhibitory concentra ...201728700958
an l319f mutation in transmembrane region 3 (tm3) selectively reduces sensitivity to okaramine b of the bombyx mori l-glutamate-gated chloride channel.okaramines produced by penicillium simplicissimum ak-40 activate l-glutamate-gated chloride channels (glucls) and thus paralyze insects. however, the okaramine binding site on insect glucls is poorly understood. sequence alignment shows that the equivalent of residue leucine319 of the okaramine b sensitive bombyx mori (b. mori) glucl is a phenylalanine in the okaramine b insensitive b. mori γ-aminobutyric acid-gated chloride channel of the same species. this residue is located in the third trans ...201728825521
two tyrosine residues, tyr-108 and tyr-503, are responsible for the deprotonation of phenolic substrates in vanillyl-alcohol oxidase.a number of oxidoreductases from the vao/para-cresol methylhydroxylase flavoprotein family catalyze the oxidation of para-substituted phenols. one of the best-studied is vanillyl-alcohol oxidase (vao) from the fungus penicillium simplicissimum for oxidation of phenols by vao to occur, they must first be bound in the active site of the enzyme in their phenolate anion form. the crystal structure of vao reveals that two tyrosine residues, tyr-108 and tyr-503, are positioned to facilitate this depro ...201728717004
a novel study based on adaptive metal tolerance behavior in fungi and sem-edx analysis.four fungal isolates: simplicillium chinense (iso 9, accession no. kx425621), penicillium simplicissimum (iso 10, kp713758), trichoderma asperellum (iso 11, kp792512), and coriolopsis sp. (1c3, km403574) were subjected to a series of induced-tolerance training under high metal concentrations to determine if greater tolerance could be achieved from constant exposure to such conditions. adaptive tolerance assay (tolerance index, ti) and field-emission scanning electron microscopy with energy dispe ...201728407540
surface imaging of the filamentous fungus penicillium simplicissimum growing in a solid-state fermentation system.a comparative study on the lipase-producing fungus penicillium simplissicimum, grown on a tray type solid-state fermentation (ssf) bioreactor, was performed using stereoscopy, focus z-stacking stereoscopic images, field emission scanning electron microscopy (fe-sem) and environmental scanning electron microscopy (esem) to better characterize the morphology of filamentous fungi in ssf and their distribution over the solid matrix. the imaging of live fungal samples using a stereomicroscope with fo ...201728395187
extremely acidic soils are dominated by species-poor and highly specific fungal communities.highly acidic soils (ph < 3) represent an environment which might potentially offer new biotechnologically interesting fungi. nevertheless, only little data on fungal communities in highly acidic habitats are available. here, we focused on the diversity of cultivable filamentous microfungi in highly acidic soils (ph < 3) in the czech republic. altogether, 16 soil samples were collected from four sampling sites and were processed by various approaches. in total, 54 fungal taxa were isolated and i ...201727687871
potential of endophytic fungi isolated from cotton roots for biological control against verticillium wilt disease.verticillium wilt is a soil-borne disease, and severely limits the development of cotton production. to investigate the role of endophytic fungi on verticillium wilt, cef-818 (penicillium simplicissimum), cef-714 (leptosphaeria sp.), cef-642 (talaromyces flavus.) and cef-193 (acremonium sp.) isolated from cotton roots were used to assess their effects against cotton wilt disease caused by a defoliating v. dahliae strain vd080. in the greenhouse, all treatments significantly reduced disease incid ...201728107448
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