Search Within
Applied Filters:
Showing 1-30 of 57 results for "


" within Papers
Li-Na Fu et al.
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 33(12), 1871-1874 (2011-05-10)
To study the chemical constituents of Rhizoma Imperatae and their anti-complementary activity. By the hemolysis test, the petroleum extraction, ethyl acetate extraction, n-butanol extraction and the water extraction was tested for anti-complementary activity. Compounds were isolated and purified by silica
Yingxin Zou et al.
International journal of molecular medicine, 36(4), 939-946 (2015-08-05)
This study investigated the effect of Cordyceps sinensis oral liquid (CSOL) on the lifespan of Drosophila melanogaster (fruit fly). Following the lifelong treatment of fruit flies with CSOL, lifespan was examined. The activity of copper-zinc-containing superoxide dismutase 1 (SOD1), manganese-containing superoxide dismutase 2 (SOD2)
A Cortéjade et al.
Talanta, 146, 694-706 (2015-12-24)
The aim of this study was to develop an analytical method and contribute to the assessment of the Exposome. Thus, a targeted analysis of a wide range of contaminants in contact with humans on daily routines in urine was developed.
Thitiphorn Rongthong et al.
International journal of pharmaceutics, 490(1-2), 165-172 (2015-05-26)
The aim of this study was to investigate the impact of the addition of different amounts of magnesium aluminum silicate (MAS) to polymeric films based on quaternary polymethacrylates (QPMs, here Eudragit RS and RL). MAS contains negatively charged SiO(-) groups
Athanasia Petala et al.
Water research, 81, 157-166 (2015-06-10)
Ethyl paraben (EP), an emerging micro-pollutant representative of the parabens family, has been subject to photocatalytic degradation under simulated solar radiation at a photon flux of 1.3·10(-4) E/(m(2) s). Six nitrogen-doped titania catalysts synthesized by annealing a sol-gel derived TiO2 powder under
C Lemini et al.
Toxicology and industrial health, 20(6-10), 123-132 (2005-06-09)
The alkyl esters of p-hydroxybenzoic acid (PHBA) known as parabens (Pbens) are widely used as preservatives in food, pharmaceuticals, and cosmetics. Several in vivo and in vitro studies have shown these compounds to be estrogenic. Here, for the first time
Virginia T Guidry et al.
Environmental health perspectives, 123(7), 705-711 (2015-03-18)
Exposures to environmental phenols and parabens may be harmful, especially in utero. Prior studies have demonstrated high within-person variability of urinary concentrations across pregnancy. We sought to measure phenol and paraben biomarker concentrations for the Norwegian Mother and Child Cohort
Yue-ying Song et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 29(4), 323-325 (2005-02-15)
Quantitative determination was made of ethyl-p-hydroxybenzoate in Dracaena cochinchinensis extracted with two technologies. The sample was resolved with methanol and isolated by TLC, purged with methanol. Tge sample solution was chroma to graphed on a C18 column with acetonitrile-1% acetic
Melisa Rodas et al.
Talanta, 143, 254-262 (2015-06-17)
Parabens are widely used in dairy products, such as in cosmetics and personal care products. Thus, in this work a multi-syringe chromatographic (MSC) system is proposed for the first time for the determination of four parabens: methylparaben (MP), ethylparaben (EP)
H Ishiwata et al.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 42(6), 404-412 (2002-03-06)
The mean concentration and daily intake of five preservatives were estimated based on the results of an analysis of 89,927 samples of food obtained in official inspections by Japanese local governments in fiscal year 1998. The mean concentration of benzoic
Lei Wang et al.
Environment international, 59, 27-32 (2013-06-12)
Human exposure to p-hydroxybenzoic acid esters (parabens) is a concern, owing to adverse health effects of these compounds. Parabens are metabolized and eliminated from the human bodies within a few hours of exposure. In this study, for the first time
Maw-Rong Lee et al.
Journal of chromatography. A, 1120(1-2), 244-251 (2006-03-04)
This study evaluated supercritical fluid extraction (SFE) combined with liquid chromatography-mass spectrometry (LC-MS) to determine trace preservatives and antioxidants including methylparaben (MP), ethylparaben (EP), propylparaben (PP), butylparaben (BP), butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), alpha-tocopherol (alpha-t) and alpha-tocopherol acetate (alpha-ta)
Monika A Lesniewska et al.
Journal of AOAC International, 98(5), 1240-1247 (2015-11-04)
The degradation behavior of a tricyclic analog of acyclovir [6-(4-MeOPh)-TACV] was determined in accordance with International Conference on Harmonization guidelines for good clinical practice under different stress conditions (neutral hydrolysis, strong acid/base degradation, oxidative decomposition, photodegradation, and thermal degradation). Accelerated
Thuy T B Vo et al.
Reproductive toxicology (Elmsford, N.Y.), 29(3), 306-316 (2010-02-06)
In this study, a female pubertal assay on the effects of parabens, including methyl-, ethyl-, propyl-, isopropyl-, butyl-, and isobutylparaben, was performed in a female Sprague-Dawley rat model during the juvenile-peripubertal period. The rats were orally treated with these parabens
R Di Giovannandre et al.
Journal of chromatography. B, Biomedical sciences and applications, 751(2), 365-369 (2001-03-10)
We have developed a high-performance liquid chromatographic-UV-Vis-diode-array detection (HPLC-DAD) method for the determination of ethyl-p-hydroxybenzoate, a hydrolytic degradation product of the synthetic protease inhibitor, gabexate-mesilate ethyl-p-(6-guanidinohexanoyloxy) benzoate methanesulfonate (GM) (FOY) in sow pancreatic juice. Methyl-p-hydroxybenzoate (I) was used as the
B Kapalavavi et al.
International journal of cosmetic science, 37(3), 306-311 (2015-01-08)
The goal of this work was to further validate the subcritical water chromatography (SBWC) methods for separation and analysis of preservatives through the evaluation of analyte stability in subcritical water. In this study, the degradation of preservatives was investigated at
Esther Pérez et al.
The Journal of biological chemistry, 279(41), 42584-42592 (2004-08-05)
A few mycobacterial species, most of which are pathogenic for humans, produce dimycocerosates of phthiocerol (DIM) and of glycosylated phenolphthiocerol, also called phenolglycolipid (PGL), two groups of molecules shown to be important virulence factors. The biosynthesis of these molecules is
Izabela Muszalska et al.
Journal of AOAC International, 98(5), 1248-1259 (2015-11-04)
The stress and accelerated tests as well as photostability analysis in solutions and the solid phase of three selected derivatives of pyrrolo[3,4-c]pyridine-1,3-dione were carried out according the International Conference on Harmonization guidelines. For observation of the degradation of tested compounds
Marina Gorga et al.
Journal of chromatography. A, 1352, 29-37 (2014-06-10)
A novel fully automated method based on dual column switching using turbulent flow chromatography followed by liquid chromatography coupled to tandem mass spectrometry (TFC-LC-MS/MS) was applied for the determination of endocrine disruptors (EDCs) and related compounds in sediment and sewage
Antonis Myridakis et al.
Analytical and bioanalytical chemistry, 407(9), 2509-2518 (2015-02-04)
Phthalates, bisphenol A (BPA) and parabens (PBs), organic chemicals widely used in everyday products, are considered to be endocrine disruptors. We propose a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of seven phthalate metabolites, six PBs and BPA
Bing Tian Zhao et al.
Archives of pharmacal research, 38(8), 1521-1529 (2015-02-27)
To establish a standard of quality control for Perillae Folium (Lamiaceae Family), four standard compounds including rosmarinic acid, elemicin, perillaldehyde, and dillapiole were evaluated by high-performance liquid chromatography (HPLC)/photodiode array (PDA). The four standards were analyzed with a Phenomenex Kinetex
F Vela-Soria et al.
Journal of chromatography. A, 1371, 39-47 (2014-12-03)
In recent decades, the industrial development has resulted in the appearance of a large amount of new chemicals that are able to produce disorders in the human endocrine system. These substances, so-called endocrine disrupting chemicals (EDCs), include many families of
Rui Cai et al.
International journal of food microbiology, 214, 145-150 (2015-08-25)
Alicyclobacillus acidoterrestris can survive the pasteurization process, multiply in pasteurized juices and produce guaiacol which causes medicinal or antiseptic off-flavors. Chemical preservatives have the potential to suppress outgrowth of surviving populations during subsequent storage of fruit juices. In the present
K L Pedersen et al.
Pharmacology & toxicology, 86(3), 110-113 (2001-02-07)
The widely used phenolic preservatives ethylparaben, propylparaben, butylparaben and their common metabolite p-hydroxybenzoic acid were tested for their ability to evoke an oestrogenic response in vivo. Yolk protein induction in sexually immature rainbow trout was used as an oestrogen-specific endpoint
M Kosová et al.
Journal of clinical pharmacy and therapeutics, 40(4), 436-440 (2015-05-28)
Parabens have been commonly used as preservatives in pharmaceutical and cosmetics industries for almost 50 years. These compounds are thermostable, pH-stable and inexpensive and have a wide antimicrobial effect. The antimicrobial activity of parabens in emulsion system is limited by
Sawsan El Hussein et al.
Experimental dermatology, 16(10), 830-836 (2007-09-12)
Concern is continuously raised about the safety of parabens which are present in most of the cosmetic preparations. In this investigation, methyl-, ethyl-, propyl- and butyl paraben (MP, EP, PP, BP), in a commercial cosmetic lotion, were deposited on human
Frances Orton et al.
Toxicology and applied pharmacology, 278(3), 201-208 (2013-09-24)
Many xenobiotics have been identified as in vitro androgen receptor (AR) antagonists, but information about their ability to produce combined effects at low concentrations is missing. Such data can reveal whether joint effects at the receptor are induced at low
Joseph C White et al.
Journal of biomedical materials research. Part A, 101(2), 438-446 (2012-08-07)
Perfluorocarbons (PFCs) are used in biomaterial formulations to increase oxygen (O(2) ) tension and create a homogeneous O(2) environment in three-dimensional tissue constructs. It is unclear how PFCs affect mechanical and transport properties of the scaffold, which are critical for
Chao Han et al.
Food chemistry, 194, 1199-1207 (2015-10-17)
For the first time, an efficient and sensitive analytical method based on liquid chromatography-quadrupole linear ion trap-tandem mass spectrometry (LC-QqLIT-MS/MS) was developed for the simultaneous determination of four paraben-type preservatives and three benzophenone-type ultraviolet light filters in both plant (Sargassum
Tomomi Hatanaka et al.
Pharmaceutical research, 32(12), 3965-3974 (2015-07-22)
To develop an in silico method based on Fick's law of diffusion to estimate the skin concentration following dermal exposure to chemicals with a wide range of lipophilicity. Permeation experiments of various chemicals were performed through rat and porcine skin.
Page 1 of 2
Page 1 of 2