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Showing 1-29 of 29 results for "30740" within Papers
Xiao-Hong Chen et al.
Journal of chromatography. A, 1263, 34-42 (2012-10-10)
A novel and effective dispersive solid-phase extraction (dSPE) procedure with rapid magnetic separation using ethylenediamine-functionalized magnetic polymer as an adsorbent was developed. The new procedure had excellent clean-up ability for the selective removal of the matrix in red wine. An
Takashi Ohtsuki et al.
Food chemistry, 141(2), 1322-1327 (2013-06-26)
An absolute quantification method for the determination of dehydroacetic acid in processed foods using quantitative (1)H NMR was developed and validated. The level of dehydroacetic acid was determined using the proton signals of dehydroacetic acid referenced to 1,4-bis (trimethylsilyl) benzene-d4
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
L Zema et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 75(2), 291-296 (2010-03-23)
A delivery device intended for the prolonged release of antimicrobial agents, able to enhance the stability profile of liquid/semi-solid cosmetic/pharmaceutical products for topical application, was proposed in the present study. With the aid of a simulation program based on compartment
M Dowsett et al.
Oncology, 48(3), 215-220 (1991-01-01)
Many patients on cytotoxic chemotherapy show reduced frequency of menstrual bleeding due to a reduction in ovarian follicular activity. The endocrine perturbations related to these changed menstrual patterns were studied in detail. Nineteen regularly menstruating patients with primary breast cancer
Sodium dehydroacetate: an emerging allergen.
Caterina Foti et al.
Dermatitis : contact, atopic, occupational, drug, 23(5), 243-243 (2012-09-27)
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
Yuka Sakaguchi et al.
Journal of applied toxicology : JAT, 28(4), 524-529 (2007-10-18)
Sodium dehydroacetate (DHA-S) is used as a food additive, preservative and antimicrobial agent. Repeated oral administration of DHA-S in rats induced severe hemorrhage in multiple organs and prolongation of blood coagulation factors. To determine the mechanism of hemorrhage, the protective
Yansheng Wang et al.
Journal of food science, 75(6), M383-M388 (2010-08-21)
The peptide mixture from housefly pupae has broad spectrum antimicrobial activity but has not previously been reported as a food preservative. In this study, the preservation effects of a housefly pupae peptide mixture, nisin, and sodium dehydroacetate (DHA-S) on the
T Hata et al.
British journal of obstetrics and gynaecology, 105(3), 360-361 (1998-04-09)
We studied the effect of dehydroepiandrosterone sulphate (DHAS) on placental blood flow in 11 women with an uncomplicated pregnancy between 37 and 39 weeks of gestation. Power Doppler enhancement of the placenta was performed before and 60 minutes after the
Allergic contact dermatitis caused by sodium dehydroacetate, not hyaluronic acid, in Ialuset® cream.
Brigitte Milpied et al.
Contact dermatitis, 65(6), 359-361 (2011-11-15)
C S Mantzoros et al.
American journal of hypertension, 8(6), 606-614 (1995-06-01)
To test the hypothesis that androgens may play a role in the pathogenesis of atherosclerosis and hypertension, we investigated the association of delta 5 dehydroepiandrosterone sulfate [DHEAS]) and delta 4 (free testosterone [FT]) androgens with the resting, seated blood pressure
Luiz C Dias et al.
Journal of agricultural and food chemistry, 57(4), 1399-1405 (2009-01-28)
A short and efficient approach to a range of new chiral and achiral functionalized (E)-enaminopyran-2,4-diones starting with commercially available dehydroacetic acid is described. The phytotoxic properties of these (E)-enaminopyran-2,4-diones were evaluated by their ability to interfere with the growth of
Huizhen Zhang et al.
Wei sheng yan jiu = Journal of hygiene research, 36(6), 748-750 (2008-02-29)
To estabish a high performance liquid chromatographic (HPLC) method for the determination of dehydroaetic acid in food determinated. Separation was carried out on a column of C18 (51 microm, 250 x 4.60mm) at the temperature of 25 degrees C with
Ségolène De Vaugelade et al.
Rapid communications in mass spectrometry : RCM, 32(11), 862-870 (2018-03-10)
The present work is devoted to the structural elucidation of by-products issued from the direct ultraviolet-visible (UV-vis) irradiation of dehydroacetic acid (DHA) in solution and in cosmetic emulsion. Analyses were carried out using gas chromatography coupled with ion trap mass
T Maggino et al.
European journal of gynaecological oncology, 14(2), 119-126 (1993-01-01)
Between September 1990 and February 1992, we studied 70 women of post-menopausal age, of whom 33 were affected by hormone-dependent gynecologic tumors and 37 by other pathologies, measuring estrogens, androgens, SHBG and also measuring excess fat and its distribution. The
D M Fouad et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 67(2), 564-567 (2006-10-20)
The ligand substitution reactions of dehydroacetic acid (Hdha) in [Fe(dha)(3)] with second ligand such as 8-hydroxyquinoline (Hquin), 1,4-dihydroxyanthraquinone (H(2)dhaq) and 1,4,5,8-tetra-hydroxyanthraquinone (H(4)thaq) were investigated spectrophotometrically by in low polarity solvents like benzene, chloroform and dichloromethane. It is deduced that the
Yoshiaki Ikarashi et al.
Kokuritsu Iyakuhin Shokuhin Eisei Kenkyujo hokoku = Bulletin of National Institute of Health Sciences, (128)(128), 85-90 (2010-01-01)
Preservatives are used to inhibit the growth of microorganisms in cosmetic products. The Japanese standards for cosmetics set restrictions on the maximum amount of each preservative added to cosmetics as per the purpose of use of cosmetics. For the investigation
E Mikami et al.
Journal of pharmaceutical and biomedical analysis, 28(2), 261-267 (2002-04-04)
A high-performance liquid chromatographic (HPLC) method for simultaneous determination of dehydroacetic acid (DHA), benzoic acid (BA), sorbic acid (SOA) and salicylic acid (SA) was developed for application to cosmetic products. Isocratic reversed-phase HPLC was employed for quantitative analysis using tetra-n-butylammonium
Hui Zhang et al.
Journal of food science, 74(7), M418-M421 (2009-11-10)
Monolaurin is a nontraditional antimicrobial agent that possesses better antimicrobial activities but causes no health problems to consumers, but the use of monolaurin in the food industry as a preservative is still limited. Using a microtiter plate assay, the minimum
Hiroko Kishi et al.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 48(3), 58-63 (2007-07-31)
A simple and rapid HPLC method was developed for the simultaneous determination of nine kinds of preservatives, benzoic acid (BA), sorbic acid (SOA), dehydroacetic acid (DHA), methyl p-hydroxybenzoate (PHBA-Me), ethyl p-hydroxybenzoate (PHBA-Et), isopropyl p-hydroxybenzoate (PHBA-isoPu), propyl p-hydroxybenzoate (PHBA-Pu), isobutyl p-hydroxybenzoate
[Influence of various steroid hormones on prostaglandin E2 metabolism in the smooth muscles of the human uterus--special reference to isolation and activity of 15 hydroxy prostaglandin dehydrogenase and 9 keto reductase].
M Oku et al.
Nihon Heikatsukin Gakkai zasshi, 25(6), 254-257 (1989-12-01)
K I Eller et al.
Voprosy pitaniia, 75(6), 72-78 (2007-02-23)
HPLC method of determination of dehydroacetic acid and its sodium salt in food products and polymeric packing materials has been developed. The migration of DGA from food-contacting materials to food matrix has been investigated.
B S Lao et al.
Se pu = Chinese journal of chromatography, 19(2), 137-140 (2003-01-25)
The contents of fat and fatty acids in Callista erycina (Linnaeus), Paphia (Paratapes) undulata (Born), Meretrix meretrix (Linnaeus), Chlamys farreri (Jones et Preston) and Patinopecten yessoensis (Jay) were studied. Fat was extracted with Bligh & Dyer (B&D) method. The lipid
[The significance of measurement of serum type IV 7S collagen on administration of DHA-S].
N Kanayama et al.
Nihon Sanka Fujinka Gakkai zasshi, 44(2), 239-240 (1992-02-01)
Yumei Zhang et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 29(6), 918-924 (2012-03-08)
A high-performance liquid chromatography (HPLC) method was developed to determine dehydroacetic acid (DHA) residues in chicken muscle, liver and kidney. DHA was extracted using acetonitrile, and clean-up performed using a strong anion exchange (PAX) SPE column. The cleaned-up samples were
Ping Wang et al.
Journal of AOAC International, 95(4), 1069-1073 (2012-09-14)
A new method for the simultaneous quantitation of 11 preservatives-imidazolidinyl urea, benzyl alcohol, dehydroacetic acid, sorbic acid, phenoxyethanol, benzoic acid, salicylic acid, and four parabens (methyl, ethyl, propyl, and butyl)-in cosmetics by micellar electrokinetic capillary chromatography was established and validated.
E M Tjiou et al.
Magnetic resonance in chemistry : MRC, 43(7), 557-562 (2005-04-30)
The reaction between o-phenylenediamines, dehydroacetic acid and aromatic aldehydes is shown to give not only the expected 1,5-benzodiazepine derivative but also a 3,4-dihydroquinoxaline, the structure of which was determined by its 1H and 13C 1D and 2D NMR spectra.
Joerg Gruenwald et al.
Advances in therapy, 21(3), 197-201 (2004-10-29)
This 12-week drug-monitoring study was conducted to evaluate the efficacy of Sanhelios Mussel Lyprinol Lipid Complex on 50 adult men and women with inflammatory rheumatoid arthritis. A total of 34 patients required drug therapy before and during the study. By
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