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Showing 1-29 of 29 results for "08607" within Papers
Ludmila V Roze et al.
Applied and environmental microbiology, 73(22), 7268-7276 (2007-09-25)
Aspergillus parasiticus is one primary source of aflatoxin contamination in economically important crops. To prevent the potential health and economic impacts of aflatoxin contamination, our goal is to develop practical strategies to reduce aflatoxin synthesis on susceptible crops. One focus
Rudolf Brenneis et al.
Biotechnology letters, 34(8), 1459-1463 (2012-04-25)
The feasibility of using native lipase A from Candida antarctica (CAL-A) to esterify fatty acids with water-insoluble alcohols in the presence of excess water was investigated in stirred-tank reactors. For high reaction rates, a ratio of water:substrates of 0.6-1.4:1 (v/v)
G Darracq et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 59(7), 1315-1322 (2009-04-22)
Biodegradation of three volatile organic compounds (VOCs) was studied. Toluene, dimethylsulphide (DMS), and dimethyldisulphide (DMDS) were introduced into flasks filled with emulsions of Di-2-EthylHexylAdipate (DEHA) in water, containing biomass (activated sludge). The VOC concentrations were analysed in the gas, organic
Owen Horn et al.
Water research, 38(17), 3693-3698 (2004-09-08)
Earlier work with pure cultures had shown that the interaction of microbes with plasticizers leads to the formation of metabolites including 2-ethylhexanoic acid and 2-ethylhexanol that resist further degradation. The presence of these metabolites is now reported in a variety
Adam R Grochowalski et al.
Biodegradation, 18(3), 283-293 (2006-11-03)
The biodegradation of plasticizers has been previously shown to result in the accumulation of metabolites that are more toxic than the initial compound. The present work shows that the pattern of degradation of di-2-ethylhexyl adipate by Bacillus subtilis can be
D Fragiadakis et al.
The Journal of chemical physics, 132(14), 144505-144505 (2010-04-22)
The dielectric spectra of most simple liquids are characterized by two relaxation processes: (i) the alpha-process, an intense, broad non-Debye relaxation with a non-Arrhenius temperature dependence and (ii) a beta process, evident mainly below the glass transition and having nearly
Kiyoshi Sakai et al.
Journal of environmental monitoring : JEM, 11(11), 2068-2076 (2009-11-06)
2-Ethyl-1-hexanol (2E1H) is a possible causative chemical for sick building symptoms; however, thus far, we do not have a clear understanding of the indoor air pollution levels caused by it. In this study, first, airborne 2E1H concentrations were measured during
2-Ethyl-1-hexanol in indoor air as a possible cause of sick building symptoms.
Kamijima M, et al.
Journal of Occupational Health, 44(3), 186-191 (2002)
Gia-Sheu Lee et al.
Biotechnology letters, 28(8), 581-585 (2006-04-15)
Using Novozym 435 as catalyst, the syntheses of ethyl ferulate (EF) from ferulic acid (4-hydroxy 3-methoxy cinnamic acid) and ethanol, and octyl methoxycinnamate (OMC) from p-methoxycinnamic acid and 2-ethyl hexanol were successfully carried out in this study. A conversion of
Blazenka Cisko-Anić et al.
Chirality, 21(10), 894-904 (2009-01-24)
A series of enantiomerically pure new fragrances, derived from 2-ethylhexanol, have been prepared and their olfactory properties evaluated. The key step of the synthesis is cinchona-alkaloid-catalyzed desymmetrization of cyclic meso-anhydrides with (R)- and (S)-2-ethylhexanol and proceeded in good to excellent
Christoph van Thriel et al.
Neurotoxicology, 28(2), 347-355 (2006-05-23)
Historically, acute solvent neurotoxicity was strongly related to reversible narcotic states that could be detected by neurobehavioral tests (e.g., simple reaction time). Nowadays, the occupational exposure to chemicals is markedly reduced and the avoidance of chemosensory effects is more important
Determination of 2-ethyl-1-hexanol as contaminant in drinking water.
Vitali M, et al.
Journal of AOAC (Association of Official Analytical Chemists) International, 76, 1133-1133 (1993)
Gunilla Wieslander et al.
Archives of environmental & occupational health, 65(1), 3-11 (2010-02-12)
The authors evaluated changes of symptoms and biomarkers in health care staff (N = 18) for people with different physical dysfunctions and similarly in an external office control group in a nondamp building (N = 15). The first workplace had
William MacCrehan et al.
Analytical chemistry, 83(22), 8560-8565 (2011-10-04)
The vapor-time profiles of explosive materials are of valuable interest to Homeland Security, providing critical information that can aid in the detection of explosive-containing devices. An approach is described that achieves reproducible characterization of volatile components as a function of
Carlie D Piché et al.
Ecotoxicology and environmental safety, 79, 108-115 (2012-01-13)
Phthalate plasticizers are used in the plastics industry to aid in processing and impart flexibility to plastics. Due to the broad use of plastics, and the tendency of plasticizers to leach out of polymers, plasticizers have become ubiquitous in the
Sangjun Lee et al.
Carbohydrate polymers, 121, 284-294 (2015-02-11)
In this study, we synthesized dimer acid (DA) esters, having short to long alkyl chains, (DA-Cn) by the Diels-Alder reaction and subsequent esterification reaction of fatty acids that were prepared by the hydrolysis of waste vegetable oil. It was found
Yasuhiro Yoshida et al.
Chemico-biological interactions, 177(2), 137-141 (2008-11-29)
It has been reported that the numbers of people suffering from occupational asthma and skin rashes triggered by various chemicals in indoor air have increased markedly. Two-ethyl-hexanol (2-EH) is known to be an indoor air pollutant and its influence on
L Ernstgård et al.
Indoor air, 20(2), 168-175 (2010-04-23)
The objective was to assess acute effects from controlled exposure of volunteers to 2-ethyl-1-hexanol, a volatile organic compound that is often found in indoor air. Sixteen males and fourteen females were in random order exposed to 1 mg/m(3) of vapors
Anneli Tuomainen et al.
Environmental health perspectives, 114(9), 1409-1413 (2006-09-13)
Polyvinyl chloride (PVC) materials have been linked to asthma in several epidemiologic studies, but the possible causal factors remain unknown. We challenged 10 subjects experimentally to degraded PVC products under controlled conditions. All of the subjects had previously experienced respiratory
Sandro Nalli et al.
Environmental pollution (Barking, Essex : 1987), 140(1), 181-185 (2005-08-30)
2-Ethylhexanol has been identified as a volatile organic compound (VOC) that contributes to the deterioration of indoor air quality. Plasticizers are common components of dust and building materials and are shown to be degraded by a variety of bacteria and
Li-Min Wang et al.
The journal of physical chemistry. B, 109(22), 11091-11094 (2006-07-21)
Many hydrogen-bonded liquids, especially glass-forming cases, display a dielectric relaxation behavior that differs qualitatively from that of other simple liquids. The majority of models aimed at explaining this unusual dielectric behavior associate the prominent Debye process with structural relaxation, viscous
Ritwika Ray et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 20(47), 15618-15624 (2014-10-07)
The present article describes novel oxidative protocols for direct esterification of alcohols. The protocols involve successful demonstrations of both "cross" and "self" esterification of a wide variety of alcohols. The cross-esterification proceeds under a simple transition-metal-free condition, containing catalytic amounts
William MacCrehan et al.
Journal of chromatography. A, 1244, 28-36 (2012-05-29)
Determination of the dynamic nature of vapor/odor release has application in a wide variety of systems. This study applies automated solid-phase microextraction (SPME) utilizing an externally sampled internal standard (ESIS) to determine the vapor-time profile of odor delivery devices for
M Preuß et al.
The Journal of chemical physics, 137(14), 144502-144502 (2012-10-16)
Binary solutions of 2-ethyl-1-hexanol (2E1H) with 2-ethyl-1-hexyl bromide (2E1Br) are investigated by means of dielectric, shear mechanical, near-infrared, and solvation spectroscopy as well as dielectrically monitored physical aging. For moderately diluted 2E1H the slow Debye-like process, which dominates the dielectric
Sandro Nalli et al.
Chemosphere, 65(9), 1510-1517 (2006-06-17)
The commonly used plasticizers di-ethylhexyl phthalate (DEHP) and di-ethylhexyl adipate (DEHA) are known to partially degrade in the presence of soil microorganisms, such as Rhodococcus rhodochrous, releasing persistent and toxic metabolites. The metabolites adipic acid and 2-ethylhexanol were both shown
Kiyoshi Sakai et al.
Journal of environmental monitoring : JEM, 8(11), 1122-1128 (2006-11-01)
2-Ethyl-1-hexanol is a possibly causative chemical in sick building symptoms, although 2-ethyl-1-hexanol has received little attention as a hazardous substance in studies on indoor air pollution. Airborne 2-ethyl-1-hexanol concentrations were measured from 2002 to 2004 in 99 rooms of 42
Vincent Varlet et al.
Journal of agricultural and food chemistry, 54(9), 3391-3401 (2006-04-28)
The odorant volatile compounds of raw salmon and smoked salmon have been investigated by two gas chromatography-olfactometry methods (frequency detection and odorant intensity) and gas chromatography-mass spectrometry. After simultaneous steam distillation-solvent extraction with diethyl ether and the recovery of the
D McGinty et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 48 Suppl 4, S115-S129 (2010-08-13)
A summary of the safety data available for 2-ethyl-1-hexanol when used as a fragrance ingredient is presented. 2-Ethyl-1-hexanol is a member of the fragrance structural group branched chain saturated alcohols in which the common characteristic structural element is one hydroxyl
Sandro Nalli et al.
The Science of the total environment, 366(1), 286-294 (2005-12-01)
The plasticizers di-2-ethylhexyl phthalate (DEHP) and di-2-ethylhexyl adipate (DEHA) are ubiquitous in the environment and undergo partial biodegradation in the presence of soil micro-organisms. The validity of a proposed pathway for the degradation of these plasticizers by Rhodococcus rhodochrous has
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