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Zendah Imene - - 2012
The new chromophenazines A-F [9-methyl-5-(3'-methylbut-2'-enyl)-5H-benzo[a]phenazin-7-one (1a), 9-methyl-5-(3'-methylbut-2'-enyl)-7-oxo-5,7-dihydrobenzo[a]phenazine-1-carboxylic acid (1b), 5-(3'-methylbut-2'-enyl)-7-oxo-5,7-dihydrophenazine-1-carboxamide (2), 3-benzoyl-5-(3'-methylbut-2'-enyl)-5,10-dihydrophenazine-1-carboxylic acid (5a), 3,7-dibenzoyl-5-(3'-methylbut-2'-enyl)-5,10-dihydrophenazine-1-carboxylic acid (5b), and 3,7-dibenzoyl-5-(3'-methylbut-2'-enyl)-5,10-dihydrophenazine-1-carboxamide (5c)], together with phenazine-1-carboxylic acid, 1-phenazinecarboxamide, 1-phenazinol, tryptophol, and anthranilic acid, were isolated from Streptomyces sp. Ank 315. The structures of the new compounds were established on the basis of spectroscopic ...
Totani Nagao - - 2012
We previously fed rats with an ester (90 ppm in a powdered AIN93G diet) synthesized from gallic acid and 1,2-dioleoyl glycerol and found that it promoted weight loss more effectively than either octyl gallate or gallic acid. Here, we esterified ferulic acid (FerA) with oleic acid, monooleoyl glycerol and dioleoyl ...
Oromí-Farrús Mireia - - 2012
The use of iodine as a catalyst and either acetic or trifluoroacetic acid as a derivatizing reagent for determining the enantiomeric composition of acyclic and cyclic aliphatic chiral alcohols was investigated. Optimal conditions were selected according to the molar ratio of alcohol to acid, the reaction time, and the reaction ...
Dobmeier Michael - - 2012
The synthetic protocol for the reduction of alcohols to hydrocarbons by using hydriodic acid, first described by Kiliani more than 140 years ago, was improved to be more applicable to organic synthesis. Instead of a strongly acidic, aqueous solution, a biphasic toluene-water reaction medium was used, which allowed the conversion ...
Zheng Yan-Ning - - 2012
With the increasing stress from oil price and environmental pollution, aroused attention has been paid to the microbial production of chemicals from renewable sources. The C12/14 and C16/18 alcohols are important feedstocks for the production of surfactants and detergents, which are widely used in the most respected consumer detergents, cleaning ...
Lefebvre Kathi A - - 2012
The neurotoxic amino acid, domoic acid (DA), is naturally produced by marine phytoplankton and presents a significant threat to the health of marine mammals, seabirds and humans via transfer of the toxin through the foodweb. In humans, acute exposure causes a neurotoxic illness known as amnesic shellfish poisoning characterized by ...
Gao Pei - - 2011
We previously showed that ethanolic extracts of spores of Ganoderma lucidum inhibit tumor cell proliferation and induce apoptosis of HL-60 cells. The active constituents appeared to be long-chain fatty acids, particularly carbon-19 (C-19) fatty acids which have not been reported in spores of Ganoderma lucidum. In the present study, two ...
Billon-Grand Geneviève - - 2011
During pathogenesis on sunflower cotyledons, Botrytis cinerea and Sclerotinia sclerotiorum show a striking resemblance in symptom development. Based on pH change profiles, the colonization process of both fungi can be divided into two stages. The first stage is associated with a pH decrease, resulting from an accumulation of citric and ...
Mitra Debjani - - 2011
This study highlights the potential of oleaginous fungus, Mucor circinelloides in adsorbing/assimilating oil and nutrients in thin stillage (TS), and producing lipid and protein-rich fungal biomass. Fungal cultivation on TS for 2days in a 6-L airlift bioreactor, resulted in a 92% increase in oil yield from TS, and 20g/L of ...
Wang Yuan-Fang - - 2011
A cationic organic flocculant epichlorohydrin-dimethylamine (EPI-DMA) was employed for the treatment of acid and direct dye. The study aims at investigating the flocculation performance of EPI-DMA for the model dye, and corresponding floc aggregation properties, which were determined by jar test and photometric dispersion analysis, respectively. The interactions between cationic ...
Zajdel Sybilla M - - 2011
A new iridoid glucoside named 10-isovaleroyl-dihydropenstemide (1), along with nine known compounds was isolated from the aerial part of Penstemon campanulatus (Cav.) Willd. The known compounds include three iridoid glucosides, one phenylpropanoid glucoside, one monoterpene glucoside, one monoterpene lactone and three flavonoids. Their structures were elucidated on the basis of ...
Jermnak Usuma U Department of Applied Biological Chemistry, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, - - 2012
Methyl syringate was isolated from the essential oil of Betula alba as an aflatoxin production inhibitor. It inhibited aflatoxin production of Aspergillus parasiticus and Aspergillus flavus with IC(50) values of 0.9 and 0.8 mM, respectively, without significantly inhibiting fungal growth. Methyl syringate reduced mRNA levels of genes (aflR, pksA, and ...
Lima Luciana Alves Rodrigues Dos Santos - - 2011
Fatty acids are abundant in vegetable oils. They are known to have antibacterial and antifungal properties. Antifungal susceptibility was evaluated by broth microdilution assay following CLSI (formerly the NCCLS) guidelines against 16 fungal strains of clinical interest. In this work, fatty acid methyl esters (FAME) was able to inhibit 12 ...
Yang Sheng-Xiang - - 2011
Fusaroside (1), a unique trehalose-containing glycolipid composed of the 4-hydroxyl group of a trehalose unit attached to the carboxylic carbon of a long-chain fatty acid, was isolated from the organic extract of fermentation broths of an endophytic fungus, Fusarium sp. LN-11 isolated from the leaves of Melia azedarach. Six known ...
Li Jing - - 2011
Fusarium proliferatum was isolated as a major pathogen causing the Fusarium disease in harvested banana fruit. One of its major compounds, fusaric acid, was identified by high-performance liquid chromatography-electrospray ionization mass spectrometry (HPLC-ESI-MS). Because the light intensity of the luminescent bacterium Vibrio qinghaiensis sp. Nov. Q67 can be inhibited by ...
Choi Hyukjae - - 2012
An investigation of the oxylipin chemistry of the temperate brown alga Cymathere triplicata led to the isolation of several secondary metabolites, cymatherelactone (1) and cymatherols A-C (2-4), the latter as their methyl ester derivatives (5-7), which contained cyclopentyl, cyclopropyl, epoxide and lactone rings. Their structures were elucidated using a combination ...
Shafaghat Ali - - 2011
The hexane extracts of flower, leaf, stem, and seed of Hypericum scabrum, which were collected from northwestern Iran, were obtained by extraction in a Soxhlet apparatus. The fatty acids were converted to methyl esters and determined by gas chromatography/flame ionization detector (GC/FID) and gas chromatography/mass spectrometry (GC/MS) systems. The hexane ...
Nishimura Hiroshi - - 2011
Ceriporiopsis subvermispora is a selective white-rot fungus that secretes alk(en)ylitaconic acids named ceriporic acids, known as ion redox silencers. In this study, we analysed a series of extracellular lipid-related metabolites produced by the fungus and found that a wide variety of ceriporic acids and fatty acids, including those with odd-numbered ...
Knoll Caroline - - 2012
During malolactic fermentation (MLF), lactic acid bacteria influence wine aroma and flavour by the production of volatile metabolites and the modification of aroma compounds derived from grapes and yeasts. The present study investigated the impact of different MLF inoculation strategies with two different Oenococcus oeni strains on cool climate Riesling ...
Poumale Herve Martial P - - 2011
In addition to lupeol (1a), three long-chain alkanoic acid esters of lupeol, in which two were new, were isolated from the hexane and ethyl acetate twigs extract of Dorstenia harmsiana Engl. (Moraceae). The structures of the new compounds were elucidated on the basis of 1D and 2D NMR experiments. Some ...
Liu X - - 2011
An UPLC-Orbitrap MS system was exploited to develop and validate a method for the simultaneous determination of 11 water-soluble azo dyes (Acid Yellow 17, Acid Red 14, Acid Red 26, Acid Red 73, Acid Orange 52, Acid Orange 7, Acid Orange 12, Acid Yellow 36, Acid Orange 5, Acid Red ...
Zhou Yi - - 2011
The naturally occurring reactive electrophilic species (RES), 12-oxo-phytodienoic acid (12-oxo-PDA) is a potent antifungal agent, whereas the plant growth regulator, jasmonic acid (JA), which is synthesised from 12-oxo-PDA, is ineffective. In order to address what structural features of the molecule endow it with antifungal activity, we have synthesised a series ...
Chamoli Tanu - - 2011
An efficient and economical synthesis of some new fluorine substituted phthalides was accomplished from two γ-keto acids, 2-(4-fluorobenzoyl)benzoic acid and 2-(3,5-dinitro-4-flurobenzoyl)benzoic acid. Each acid was reacted with various phenolic compounds in presence of catalytic quantity of concentrated sulphuric acid to get the phthalides. The structures of the synthesized compounds were ...
Sriranganadane Dev - - 2011
The dermatophytes are a group of closely related fungi which are responsible for the great majority of superficial mycoses in humans and animals. Among various potential virulence factors, their secreted proteolytic activity attracts a lot of attention. Most dermatophyte secreted proteases which have so far been isolated in vitro are ...
Stierle Donald B DB Department of Biomedical and Pharmaceutical Sciences, The University of Montana, Missoula, Montana 59812, United States. - - 2011
The Berkeley Pit, an acid mine waste lake, is a source of extremophilic microorganisms that produce interesting bioactive compounds. We have previously reported the isolation of berkeleydione (1), berkeleytrione (2), the berkeleyacetals, and the berkeleyamides from the Pit Lake fungus Penicillium rubrum. In this paper we report the isolation and ...
Martorana Andrea - - 2011
Spectroscopic measurements combined with Density Functional Theory calculations were applied to the characterization of the homocoupling reaction of 4-methylamino benzoic acid mediated by laccase.
Kleinschnitz Eva-Maria - - 2011
Streptomyces coelicolor contains two gene clusters putatively involved in wall teichoic acid biosynthesis. Inactivation of the tagF homologue SCO2997 or SCO2584, a component of the Streptomyces spore wall synthesizing complex, affected sporulation. The mutant phenotypes resembled those of mre mutants, suggesting a function of wall teichoic acids in the differentiation ...
Yan Sha - - 2011
Three new sesquiterpene acids, xylaric acids A-C (1-3, resp.), and a new tetralone (=3,4-dihydronaphthalen-1(2H)-one) derivative, 4, along with nine known compounds, xylaric acid D (5), hydroheptelidic acid (6), gliocladic acid (7), chlorine heptelidic acid (8), trichoderonic acid A (9), 16-(α-D-mannopyranosyloxy)isopimar-7-en-19-oic acid (10), 16-(α-D-glucopyranosyloxy)isopimar-7-en-19-oic acid (11), 5-carboxymellein (12), and naphthalen-1,8-diol 1-O-α-D-glucopyranoside ...
Wang Hui - - 2011
Fractionation of the ethyl acetate extract of an acid-tolerant fungus, Penicillium purpurogenum JS03-21, resulted in the isolation of six new compounds, purpurquinones A-C (1-3), purpuresters A and B (4 and 5), and 2,6,7-trihydroxy-3-methylnaphthalene-1,4-dione (6), together with three known compounds, TAN-931 (7), (-)-mitorubrin (8), and orsellinic acid. The structures of 1-6 ...
Gören Ahmet C - - 2011
The fatty acid composition of the seed oil of 23 Stachys taxa was analysed by GC/MS. The main compounds were found to be linoleic (27.1-64.3%), oleic (20.25-48.1%), palmitic (4.3-9.1%), stearic (trace to 5.2%) and 6-octadecynoic (2.2-34.1%) acids. The latter compound could be used as a chemotaxonomic marker of the genus ...
Zeng Yelin - - 2011
The effects of white-rot and brown-rot fungal pretreatment on the chemical composition and thermochemical conversion of corn stover were investigated. Fungal pretreated corn stover was analyzed by fourier transform infra-red spectroscopy and X-ray diffraction analysis to characterize the changes in chemical composition. Differences in thermochemical conversion of corn stover after ...
Nishimura Hiroshi - - 2011
Ceriporiopsis subvermispora is a selective white rot basidiomycete which degrades lignin in wood at a distance far from enzymes. Low molecular mass metabolites play a central role in the oxidative degradation of lignin. To understand the unique wood-decaying mechanism, we surveyed the oxidized derivatives of ceriporic acids (alk(en)ylitaconic acids) produced ...
West Thomas P - - 2011
The ability of Aspergillus strains to utilize thin stillage to produce malic acid was compared. The highest malic acid was produced by Aspergillus niger ATCC 9142 at 17 g l(-1). Biomass production from thin stillage was similar with all strains but ATCC 10577 was the highest at 19 g l(-1). The highest malic acid ...
Lah Ljerka - - 2011
Cytochromes P450 (CYPs) catalyse diverse reactions and are key enzymes in fungal primary and secondary metabolism, and xenobiotic detoxification. CYP enzymatic properties and substrate specificity determine the reaction outcome. However, CYP-mediated reactions may also be influenced by their redox partners. Filamentous fungi with numerous CYPs often possess multiple microsomal redox ...
Christelle Tsague Dongmo - - 2011
Two new alkylanacardic acids, ozorcardic A (1) and B (2), along with the known and related metabolite anacardic acid (3), were isolated from Ozoroa pulcherrima. The structures of the new compounds were elucidated by detailed spectroscopic and spectrometric analysis.
Kurakake Masahiro - - 2011
Aspergillus awamori K4 β-xylosidase has broad acceptor specificity. It has been used to synthesize a sugar fatty acid ester via its transxylosylation activity. One xylosyl residue was initially transferred to hexamethylene glycol as a linker with a yield of 0.36 g/g xylobiose. Linoleic acid was subsequently linked to one terminal hydroxyl ...
Faizi Shaheen- - - 2011
Bioassay guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids ...
Gonçalves Sarah S SS Departamento de Medicina, Disciplina de Infectologia, Universidade Federal de São Paulo, - - 2012
During a survey on the incidence of Aspergillus in clinical environments, we found some interesting isolates that were morphologically similar to Aspergillus parasiticus, but differed in the color of the colonies and in the pattern of their conidial ornamentation. In the present study, those isolates were characterized using a polyphasic ...
Badr Sherif E A - - 2011
The chemical composition and biological activity of three parts (rind, flesh and seeds) of pumpkin fruits (Cucurbita pepo L.) cultivated in Egypt were studied. Chemical analysis of fibre, protein, β-carotene, carbohydrates, minerals and fatty acids present in the rind, flesh, seeds and defatted seeds meal was conducted. Chemical, GC-MS and ...
Zare Kh - - 2011
Callus induction and proliferation of Echium italicum L. (Boraginaceae) were investigated using cotyledon, hypocotyl and root explants. Calli were initiated and established using B5, LS, 1/2LS and White media supplemented with different auxins, including 2,4-dichlorophenoxyacetic acid (2,4-D), indole-3-acetic acid (IAA) and 1-naphthaleneacetic acid (NAA) in combination with kinetin. The maximum ...
Santos Edlene O - - 2011
Phytochemical investigation of the aerial parts of Eriope blanchetii and E. latifolia (Lamiaceae) yielded podophyllotoxin, as well as the aryltetralin lignans α- and β-peltatin and yatein. Oleanolic, ursolic and epikatonic acids were also isolated. This is the first occurrence of podophyllotoxin in the family.
Park Sung Hwan - - 2011
Phytochemical investigation of the branches of Ficus erecta var. sieboldii King resulted in the isolation of eight constituents: p-hydroxybenzoic acid (1), methyl p-hydroxybenzoate (2), vanillic acid (3), methyl vanillate (4), syringic acid (5), β-sitosterol (6), α-amyrin acetate (7), and ethyl linoleate (8). Their chemical structures were identified via spectroscopic means ...
Hu Jing-Rong - - 2011
A method was developed for rapid screening and isolation of eicosapentaenoic acid (EPA)-producing soil fungi through polymerase chain reaction (PCR) amplification. Genes coding for delta6 fatty acid desaturase and delta5 fatty acid desaturase were used as molecular markers for screening these EPA-producing fungi from soil. Three out of 65 soil ...
Chandrasekaran M - - 2011
The fatty acid methyl esters (FAME extract) from Sesuvium (S.) portulacastrum was studied for its fatty acid composition and antimicrobial activity against human pathogenic microorganisms. The gas chromatographic analysis of FAME extract revealed the presence of palmitic acid with the highest relative percentage (31.18%), followed by oleic acid (21.15%), linolenic ...
Venkata Subhash G - - 2011
The study documented the potential of isolated filamentous fungus Aspergillus sp. as whole cell biocatalyst for biodiesel production using Sabourauds dextrose broth medium (SDBM) and corncob waste liquor (CWL) as substrates. SDBM showed improvement in both biomass production (13.6g dry weight/1000ml) and lipid productivity (23.3%) with time. Lipid extraction was ...
Varga J - - 2011
Aspergillus subgenus Circumdati section Flavi includes species with usually biseriate conidial heads, in shades of yellow-green to brown, and dark sclerotia. Several species assigned to this section are either important mycotoxin producers including aflatoxins, cyclopiazonic acid, ochratoxins and kojic acid, or are used in oriental food fermentation processes and as ...
Mondol M A Mojid - - 2011
Bioassay-guided isolation of the EtOAc extract of a marine Bacillus sp., cultured in modified Bennett's broth medium, yielded four new antimicrobial fatty acids, named ieodomycins A-D (1-4). The planar structures of these new compounds were determined by extensive 1D and 2D NMR and HRESIMS spectroscopic data analysis. Their absolute configurations ...
Dippe Martin - - 2011
Armillaria ostoyae is a phytopathogen infecting coniferous trees. Fruiting bodies of this basidiomycete contain high phospholipase A(1) (PLA(1)) activity. In this paper, the role of phospholipid-deacylating activity, which was also detected in fruiting bodies of other basidiomycetes, in the fungal lipid metabolism is elucidated. For A. ostoyae the occurrence of ...
Cao Ana - - 2011
In the current study, the hydroxycinnamic acids in silks of diverse maize inbred lines differing in Fusarium resistance were determined at several times after inoculation with F. graminearum or sterile water as control. The main objective was to determine the possible relationship between the hydroxycinnamic acid changes in silks and ...
Singh Susmita - - 2011
The ability of Aspergillus fumigatus L: -amino acid oxidase (L: -aao) to cause the resolution of racemic mixtures of DL: -amino acids was investigated with DL: -alanine, DL: -phenylalanine, DL: -tyrosine, and DL: -aspartic acid. A chiral column, Crownpak CR+ was used for the analysis of the amino acids. The ...
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