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Liang Meng et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 989, 46-53 (2015-03-25)
Two microextraction techniques based on hollow fiber liquid-phase microextraction (HF-LPME) and ultrasound-assisted low-density solvent dispersive liquid-liquid microextraction (UA-LDS-DLLME) had been applied for the determination of drugs of abuse (methamphetamine, amphetamine, 3,4-methylenedioxymethamphetamine, 3,4-methylenedioxyamphetamine, methcathinone, ketamine, meperidine, and methadone) in urine and
Zhongqi Ren et al.
Applied biochemistry and biotechnology, 152(2), 286-294 (2008-06-26)
The facilitated transport of penicillin G from aqueous solutions to the stripping phase through bulk liquid membrane (BLM) containing TBP in 3% iso-octanol and n-butyl acetate was studied. Na(2)CO(3) solution was used as the stripping phase. Experiments were performed as
Subhash Bhatia et al.
Journal of hazardous materials, 164(2-3), 1110-1117 (2008-11-04)
The low concentration and high flow rate of air-borne butyl acetate (BA) could be effectively removed using combined adsorption-catalytic oxidation system. Ag-Y (Si/Al=80) dual-function adsorbent was investigated for the adsorption step of 1000 ppm of butyl acetate at gas hourly
Ariane van der Straten et al.
AIDS and behavior, 17(6), 2211-2221 (2013-01-17)
We assessed the feasibility of a breath test to detect women's single or concurrent use of vaginal products by adding ester taggants to vaginal gel and condom lubricant. Healthy non-pregnant women were enrolled into a two-day cohort (N = 13)
Hala Fam et al.
Bioprocess and biosystems engineering, 35(8), 1367-1374 (2012-03-29)
The mass transfer of phenol and butyl acetate to/from water was studied in two-phase partitioning bioreactors using immiscible organic solvents and solid polymer beads as the partitioning phases in a 5-L stirred tank bioreactor. Virtually instantaneous mass transfer was observed
Mingdong An et al.
Bioscience, biotechnology, and biochemistry, 76(6), 1210-1212 (2012-07-14)
A novel NADPH-dependent reductase (CaCR) from Candida albicans was cloned for the first time. It catalyzed asymmetric reduction to produce ethyl (S)-4-chloro-3-hydroxybutanoate ((S)-CHBE). It contained an open reading frame of 843 bp encoding 281 amino acids. When co-expressed with a
JianCai Zhu et al.
Journal of agricultural and food chemistry, 63(34), 7499-7510 (2015-08-11)
The aroma profile of oolong tea infusions (Dongdingwulong, DDWL; Tieguanyin, TGY; Dahongpao, DHP) were investigated in this study. Gas chromatography-olfactometry (GC-O) with the method of aroma intensity (AI) was employed to investigate the aroma-active compounds in tea infusions. The results
Katrin Margulis-Goshen et al.
International journal of pharmaceutics, 393(1-2), 230-237 (2010-04-21)
A new composition of a fully water-dilutable microemulsion system stabilized by natural surfactants is presented as a template for preparation of celecoxib nanoparticles. Nanoparticles are obtained as a dry powder upon rapid conversion of microemulsion droplets with dissolved celecoxib into
Cheng Teng Wong et al.
Journal of hazardous materials, 157(2-3), 480-489 (2008-02-26)
The performance of silver-loaded zeolite (HY and HZSM-5) catalysts in the oxidation of butyl acetate as a model volatile organic compound (VOC) was studied. The objective was to find a catalyst with superior activity, selectivity towards deep oxidation product and
Rohan Jagirdar et al.
Experimental neurology, 273, 92-104 (2015-08-05)
A prominent role of epigenetic mechanisms in manifestation of epilepsy has been proposed. Thus altered histone H3 and H4 acetylation has been demonstrated in experimental models of temporal lobe epilepsy (TLE). We now investigated changes in the expression of the
Kun Zhang et al.
Applied microbiology and biotechnology, 99(4), 2009-2022 (2015-01-15)
The ethanologenic bacterium Zymomonas mobilis is usually tolerant to high concentrations of glucose. The addition of sorbitol decreases the lag phase and increases ethanol yield and productivity of the bacteria in high glucose concentrations. The molecular mechanisms of adaptation to
Natália G Graebin et al.
Biotechnology progress, 28(2), 406-412 (2012-01-25)
A new biocatalyst of lipase B from Candida antarctica (MCI-CALB) immobilized on styrene-divinylbenzene beads (MCI GEL CHP20P) was compared with the commercial Novozym 435 (immobilized lipase) in terms of their performances as biocatalysts for the esterification of acetic acid and
P Xiao et al.
International journal of pharmaceutics, 406(1-2), 111-113 (2011-01-22)
This work describes the first application of Opto-Thermal Transient Emission Radiometry (OTTER), an infrared remote sensing technique, to probe the extent to which solvents permeate the human nail in vivo. Decanol, glycerol and butyl acetate were selected as model solvents.
Bao-Dong Cai et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1004, 23-29 (2015-10-07)
In the current study, a novel method for high-throughput and sensitive determination of 12 phytohormones in plants was developed by using sequential solvent induced phase transition extraction (SIPTE) coupled with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). In sequential SIPTE, 0.1%
Jan Paca et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 47(7), 1036-1045 (2012-04-11)
Steady-state performances of a trickle bed reactor (TBR) and a biofilter (BF) in loading experiments with increasing inlet concentrations of polar solvents, acetone, methyl ethyl ketone, methyl isobutyl ketone and n-butyl acetate, were investigated, along with the system's dynamic responses.
Pekka Heinälä et al.
BMC research notes, 5, 439-439 (2012-08-17)
Naltrexone has been proven to be an effective treatment option for the treatment of alcohol dependency. In this article we introduce a reliable and simple method developed for the simultaneous determination of naltrexone and 6-β-naltrexol in human serum by using
YongJun Zhao et al.
Journal of hazardous materials, 186(1), 430-435 (2010-12-15)
This paper examined the photolysis of gaseous butyl acetate by built-in microwave discharge electrodeless lamps. Bromine and iodine lamps were used to investigate the effects of microwave input power, inlet concentration, gas residence time, and different filling materials on butyl
Margaux Cameleyre et al.
Journal of agricultural and food chemistry, 63(44), 9777-9788 (2015-11-04)
This study focused on the impact of five higher alcohols on the perception of fruity aroma in red wines. Various aromatic reconstitutions were prepared, consisting of 13 ethyl esters and acetates and 5 higher alcohols, all at the average concentrations
Sami H Ali et al.
Bioresource technology, 102(21), 10094-10103 (2011-09-13)
Butyl acetate holds great potential as a sustainable biofuel additive. Heterogeneously catalyzed transesterification of biobutanol and bioethylacetate can produce butyl acetate. This route is eco-friendly and offers several advantages over the commonly used Fischer Esterification. The Amberlite IR 120- and
Yung-Chieh Tsao et al.
The Science of the total environment, 409(17), 3158-3165 (2011-05-31)
This study evaluated the efficacy of simultaneously employing three open-path Fourier transform infrared (OP-FTIR) spectrometers with 3-day consecutive monitoring, using an odor episode as an example. The corresponding monitoring paths were allocated among the possible emission sources of a semiconductor
Andreas Sponring et al.
Cancer biomarkers : section A of Disease markers, 7(3), 153-161 (2011-01-26)
Analysis of volatile organic compounds (VOCs) provides an elegant approach for cancer screening and disease monitoring, whose use is currently limited by a lack of validated cancer-derived metabolites, which may serve as biomarkers. The aim of the experiments presented here
Mitsuo Miyazawa et al.
Natural product research, 23(17), 1567-1571 (2009-10-24)
The composition of the volatile components from unripe (I) and ripe (II) Japanese apricot (Prunus mume Sieb. et Zucc.) have been investigated. Seventy-six volatile components were identified, 25 for the first time as volatile constituents of Japanese apricot. The main
Subhash Bhatia et al.
Journal of hazardous materials, 163(1), 73-81 (2008-07-25)
Adsorption behaviours of butyl acetate in air have been studied over silver-loaded Y (Si/Al=40) and ZSM-5 (Si/Al=140) zeolites. The silver metal was loaded into the zeolites by ion exchange (IE) and impregnation (IM) methods. The adsorption study was mainly conducted
Prateek Kathel et al.
ISA transactions, 49(1), 130-137 (2009-10-10)
This work deals with the dynamics and control of a high-purity batch distillation column with chemical reaction. A heterogeneous esterification reaction between the acetic acid and butanol takes place to produce butyl acetate. The process model is formulated considering variable
Jenni Viinamäki et al.
Analytica chimica acta, 865, 1-7 (2015-03-04)
Quantitative screening for a broad range of drugs in blood is regularly required to assess drug abuse and poisoning within analytical toxicology. Mass spectrometry-based procedures suffer from the large amount of work required to maintain quantitative calibration in extensive multi-compound
Sigalit Meker et al.
ChemMedChem, 9(6), 1294-1298 (2014-03-29)
Nanoparticles of titanium(IV) complexes of phenolato ligands were formed and evaluated for cytotoxicity toward human HT-29 colon cancer, murine T-25 lymphoma, and murine HU-2 multidrug-resistant (MDR) cells. The nano-formulation, besides increasing the complexes' shelf lives, is particularly efficient in overcoming
Ding-Sheng Chen et al.
Huan jing ke xue= Huanjing kexue, 32(12), 3680-3684 (2012-04-04)
Complicated industrial organic waste gas with the characteristics of low concentration,high wind volume containing inorganic dust and oil was employed the research object by complex absorption. Complex absorption mechanism, process flow, purification equipment and engineering application were studied. Three different
Vinh Quang Dang et al.
Small (Weinheim an der Bergstrasse, Germany), 11(25), 3054-3065 (2015-02-24)
Ultraviolet (UV) photodetectors based on ZnO nanostructure/graphene (Gr) hybrid-channel field-effect transistors (FETs) are investigated under illumination at various incident photon intensities and wavelengths. The time-dependent behaviors of hybrid-channel FETs reveal a high sensitivity and selectivity toward the near-UV region at
Yuan Gao et al.
Pakistan journal of pharmaceutical sciences, 25(2), 389-394 (2012-03-31)
A simple, rapid, specific and precise reversed-phase high-performance liquid chromatographic method was developed for simultaneous estimation of triacetin, acetic ether, butyl acetate and amorolfine in marketed pharmaceutical liniment. Chromatographic separation was performed on a Shimadzu VP-ODS C(18) column using the
Paweł Mochalski et al.
Cell biochemistry and biophysics, 71(1), 323-329 (2014-08-16)
Gas chromatography with mass spectrometric detection combined with head-space needle trap extraction as the pre-concentration technique was applied to identify and quantify volatile organic compounds released or metabolised by human umbilical vein endothelial cells. Amongst the consumed species there were
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