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Showing 1-30 of 39 results for "S7602" within Papers
Ying Zhang et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 36(8), 1019-1023 (2011-08-04)
To study the chemical constituents from the ethyl acetate extract of Myricaria bracteata. The chemical constituents were isolated and purified by chromatographic techniques, and their structures were identified by physical characters and spectroscopic analysis. Sixteen compounds were isolated from the
Palwinder Singh et al.
Journal of medicinal chemistry, 55(14), 6381-6390 (2012-06-28)
On the basis of structural analysis of dihydrofolate reductase (DHFR) (cocrystallized separately with NADPH, dihydrofolate and NADPH, trimethoprim), compounds 2 and 3 were optimized for inhibition of DHFR. Appreciable tumor growth inhibitory activities of compounds 2 and 3 over 60
Kazuhiko Kurosawa et al.
Bioresource technology, 193, 206-212 (2015-07-05)
Extracting lipids from oleaginous microbial cells in a cost effective and environmentally compatible manner remains a critical challenge in developing manufacturing paradigms for advanced liquid biofuels. In this study, a new approach using microbial growth inhibitors from lignocellulose-derived feedstocks was
Chia-Hsin Huang et al.
Journal of natural products, 75(8), 1465-1468 (2012-08-14)
The antihyperglycemic effect of syringaldehyde (1), purified from the stems of Hibiscus taiwanensis, was investigated in streptozotocin-induced diabetic rats (STZ-diabetic rats) showing type-1 like diabetes mellitus. Bolus intravenous injection of 1 showed antihyperglycemic activity in a dose-dependent manner in STZ-diabetic
Changgeng Liu et al.
Environmental science & technology, 46(24), 13262-13269 (2012-11-23)
Methoxyphenols, tracers for wood smoke, are emitted into the atmosphere in large quantities, but their chemical degradation in the atmosphere has not been well characterized. In this study, heterogeneous kinetics of particulate syringaldehyde (SA), vanillic acid (VA), and coniferyl aldehyde
Rogério S Pereira et al.
Journal of industrial microbiology & biotechnology, 38(1), 71-78 (2010-09-08)
The inhibitory action of acetic acid, ferulic acid, and syringaldehyde on metabolism of Candida guilliermondii yeast during xylose to xylitol bioconversion was evaluated. Assays were performed in buffered and nonbuffered semidefined medium containing xylose as main sugar (80.0 g/l), supplemented
Jinming Zhang et al.
Bioresource technology, 121, 369-378 (2012-08-07)
Candida athensensis SB18 is potential xylitol producing yeast isolated in Singapore. It has excellent xylose tolerance and is able to produce xylitol in high titer and yield. However, by-products, such as phenolic compounds, derived in lignocellulosic biomass hydrolysate might negatively
Amanda Fillat et al.
Bioresource technology, 101(11), 4104-4110 (2010-02-09)
The phenols syringaldehyde (SA), acetosyringone (AS) and p-coumaric acid (PCA) were used as natural laccase mediators in combination with a laccase from Pycnoporus cinnabarinus to bleach flax fibres. Their performance was compared with 1-hydroxybenzotriazole (HBT) in terms of enzyme stability
Mei-Ying Chen et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 26(5), 561-567 (2010-05-15)
Humic substances (HS) from well waters, fertilizers, and synthetic phenolic polymers were characterized by elemental and UV-VIS spectroscopic analyses. Capillary zone electrophoresis (CZE) with UV absorption detection was used to analyze the lignin-derived phenolic distribution in the degradation residues after
Alfredo Oliva-Taravilla et al.
Biotechnology progress, 31(3), 700-706 (2015-03-06)
The presence of inhibitors compounds after pretreatment of lignocellulosic materials affects the saccharification and fermentation steps in bioethanol production processes. Even though, external addition of laccases selectively removes the phenolic compounds from lignocellulosic prehydrolysates, when it is coupled to saccharification
Silvia Forcat et al.
Phytochemistry, 71(8-9), 870-876 (2010-04-03)
Changes occurring to plant cell walls were examined following inoculation of Arabidopsis leaves with pathogenic and non-pathogenic (hrpA mutant) strains of Pseudomonas syringae pv. tomato. We have targeted low molecular weight, cross-linked phenolic and indolic compounds that were released from
Cuimin Hu et al.
Bioresource technology, 100(20), 4843-4847 (2009-06-06)
Lignocellulosic biomass hydrolysis inevitably coproduces byproducts that may have various affects on downstream biotransformation. It is imperative to document the inhibitor tolerance ability of microbial strain in order to utilize biomass hydrolysate more effectively. To achieve better lipid production by
Morten O A Sommer et al.
Molecular systems biology, 6, 360-360 (2010-04-16)
Sustainable biofuel alternatives to fossil fuel energy are hampered by recalcitrance and toxicity of biomass substrates to microbial biocatalysts. To address this issue, we present a culture-independent functional metagenomic platform for mining Nature's vast enzymatic reservoir and show its relevance
Choon Young Lee et al.
Biochimie, 111, 125-134 (2015-02-11)
Numerous studies have reported the beneficial effects of antioxidants in human diseases. Among their biological effects, a majority of antioxidants scavenge reactive radicals in the body, thereby reducing oxidative stress that is associated with the pathogenesis of many diseases. Antioxidant
João C Gasparetto et al.
Journal of separation science, 34(7), 740-748 (2011-03-05)
In this study, two HPLC-ESI-MS/MS methods were developed and validated for the determination of 1,2-benzopyrone (COU), o-coumaric acid (OCA), kaurenoic acid (KAU), syringaldehyde (SYR), and dihydrocoumarin (DIH) in guaco extracts and pharmaceutical preparations (syrup and oral solution). The chromatographic separation
Meng Li et al.
Bioresource technology, 167, 14-23 (2014-06-27)
Sweet sorghum has been regarded as a typical species for rich soluble-sugar and high lignocellulose residues, but their effects on biomass digestibility remain unclear. In this study, we examined total 63 representative sweet sorghum accessions that displayed a varied sugar
Igor Jerković et al.
Molecules (Basel, Switzerland), 15(7), 4572-4582 (2010-07-27)
A rare sample of maple (Acer spp.) honey from Croatia was analysed. Ultrasonic solvent extraction (USE) using: 1) pentane, 2) diethyl ether, 3) a mixture of pentane and diethyl ether (1:2 v/v) and 4) dichloromethane as solvents was applied. All
Cristina Torres-Duarte et al.
Chemosphere, 77(5), 687-692 (2009-08-22)
The transformation of organic halogenated pesticides by laccase-mediator system has been investigated. Twelve pesticides were assayed in the presence of nine different mediators. Acetosyringone and syringaldehyde showed to be the best mediators. The halogenated pesticides bromoxynil, niclosamide, bromofenoxim and dichlorophen
Kerstin Stärk et al.
ChemSusChem, 3(6), 719-723 (2010-05-19)
Beech lignin was oxidatively cleaved in ionic liquids to give phenols, unsaturated propylaromatics, and aromatic aldehydes. A multiparallel batch reactor system was used to screen different ionic liquids and metal catalysts. Mn(NO(3))(2) in 1-ethyl-3-methylimidazolium trifluoromethanesulfonate [EMIM][CF(3)SO(3)] proved to be the
Daniela Vieira Cortez et al.
Bioresource technology, 101(6), 1858-1865 (2009-10-14)
The effect of lignin degradation products liberated during chemical hydrolysis of lignocellulosic materials on xylose-to-xylitol bioconversion by Candida guilliermondii FTI 20037 was studied. Two aromatic aldehydes (vanillin and syringaldehyde) were selected as model compounds. A two-level factorial design was employed
Rajeev Kumar Kapoor et al.
Bioresource technology, 189, 99-106 (2015-04-16)
Laccases have wide range of substrate specificity and find applications from pulp industry to waste water remediation. Laccases have also been used in combined pretreatment of biomass hydrolyzates to remove enzymatic and fermentation inhibitors. In this study, laccase production by
Esteban D Babot et al.
Bioresource technology, 102(12), 6717-6722 (2011-04-23)
The ability of two natural phenols to act as mediators of the recombinant Myceliophthora thermophila laccase (MtL) in eucalypt-pulp delignification was investigated. After alkaline peroxide extraction, the properties of the enzymatically-treated pulps improved with respect to the control. The pulp
Annekathrin Martina Keiler et al.
European journal of nutrition, 53(4), 1073-1081 (2013-10-31)
The Mediterranean diet rich in fruits, vegetables and olive oil has been related to a lower osteoporosis incidence and accordingly to a reduced fracture risk. These observations might be mediated by the active constituents of extra virgin olive oil, and
Farid Khallouki et al.
Journal of medicinal food, 14(11), 1397-1402 (2011-08-30)
The root bark of Annona cuneata Oliv. is traditionally used in the Democratic Republic of Congo to treat several debilitating conditions, such as hernia, female sterility, sexual asthenia, and parasitic infections. However, little is known about the composition of the
P G Monje et al.
Water research, 44(7), 2211-2220 (2010-01-26)
The great amount of pollutants released from kraft pulp processes, mainly from cooking and bleaching stages, is one of the most relevant environmental problems in this type of industry. New bleaching sequences are being studied based on the use of
Melina Heller et al.
Journal of agricultural and food chemistry, 59(13), 6882-6888 (2011-06-15)
The present study aimed to develop a methodology using capillary electrophoresis for the determination of sinapaldehyde, syringaldehyde, coniferaldehyde, and vanillin in whiskey samples. The main objective was to obtain a screening method to differentiate authentic samples from seized samples suspected
Wojciech Ostrowski et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 967, 21-27 (2014-07-27)
Liquid chromatography coupled to mass spectrometry (MS) with electrospray ionization (ESI) is one of analytical techniques to obtain accurate results of low molecular weight aromatic compounds in biological samples of different origin. The interpretations of mass spectra of these aromatic
Fabiola Medina et al.
Enzyme and microbial technology, 52(1), 68-76 (2012-12-04)
A Structure Activity Relationship (SAR) study for laccase mediator systems was performed in order to correctly classify different natural phenolic mediators. Decision tree (DT) classification models with a set of five quantum-chemical calculated molecular descriptors were used. These descriptors included
Yu Huang et al.
Bioresource technology, 181, 224-230 (2015-02-07)
In this study, steam explosion pretreatment was performed in cotton stalks, leading to 5-6 folds enhancements on biomass enzymatic saccharification distinctive in Gossypium barbadense and Gossypium hirsutum species. Sequential 1% H2SO4 pretreatment could further increase biomass digestibility of the steam-exploded
Ming Li et al.
Bioresource technology, 169, 447-454 (2014-08-01)
In this study, various alkali-pretreated lignocellulose enzymatic hydrolyses were evaluated by using three standard pairs of Miscanthus accessions that showed three distinct monolignol (G, S, H) compositions. Mfl26 samples with elevated G-levels exhibited significantly increased hexose yields of up to
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