Buscar
Mostrando ítems 21-30 de 1425
Carotenoid Profile of Tomato Sauces: Effect of Cooking Time and Content of Extra Virgin Olive Oil
(Mdpi Ag, 2015-05-01)
The consumption of carotenoid-rich vegetables such as tomatoes and tomato sauces is associated with reduced risk of several chronic diseases. The predominant carotenoids in tomato products are in the (all-E) configuration, ...
Stereoselective Analysis of Labetalol in Human Plasma by LC-MS/MS: Application to Pharmacokinetics
(WILEY-LISS, 2009)
Labetalol is clinically available as a mixture of two racemates (four stereoisomers). The stereoisomer (R,R) has as main activity the beta(1)-antagonism and the stereoisomer (S,R) is highly selective for the alpha(1) ...
Determination of Cyclophosphamide Enantiomers in Plasma by LC-MS/MS: Application to Pharmacokinetics in Breast Cancer and Lupus Nephritis Patients
(WILEY-LISS, 2009)
This article describes the enantioseleclive analysis of cyclophosphamide (CPA) in human plasma using LC-MS/MS. CPA enantiomers were extracted from plasma using a mixture of ethyl acetate and chloroform (75:25, v/v). The ...
Identification of non-zein proteins in BR473 maize protein bodies by LC-nanoESI-MS/MS
(WILEY-V C H VERLAG GMBH, 2009)
The nutritional value of maize seed is limited due to its high content of storage proteins (zeins), which are deficient in essential amino acids such as lysine and tryptophan. In a previous paper, we showed that protein ...
Residue depletion of florfenicol and florfenicol amine in broiler chicken claws and a comparison of their concentrations in edible tissues using LC–MS/MS
(MDPI AG, 2018)
Antimicrobial residues might persist in products and by-products destined for human or animal consumption. Studies exploring the depletion behavior of florfenicol residues in broiler chicken claws are scarce, even though ...
Laboratory validation of an LC-MS/MS method for the detection of ractopamine, clenbuterol and salbutamol in bovine and swine muscle at sub-μg kg–1 regulatory limits
(2017-05-04)
Ractopamine (RAC), is a β-adrenergic agonist increasingly used in the swine and cattle industry. This compound redirects nutrients to favour leanness rather than fat deposition, improves growth and carcass traits gaining ...
Methods for detection of anatoxin-a(s) by liquid chromatography coupled to electrospray ionization-tandem mass spectrometry
(PERGAMON-ELSEVIER SCIENCE LTD, 2010)
Anatoxin-a(s) is a potent irreversible inhibitor of the enzyme acetylcholinesterase with a unique N-hydroxyguanidine methylphosphate ester chemical structure. Determination of this toxin in environmental samples is hampered ...
Fat-Soluble Bioactive Components in Colored Rice Varieties
(Mary Ann Liebert, Inc, 2014-10-01)
Bioactive components in rice vary depending on the variety and growing condition. Fat-soluble components such as gamma-oryzanol, tocopherols, tocotrienols, carotenoids, and fatty acids were analyzed in brown, sugary brown, ...
Quantitation and identity confirmation of residues of quinolones in tilapia fillets by LC-ESI-MS-MS QToF
(Springer HeidelbergHeidelbergAlemanha, 2009)
Meloxicam determination in human plasma by high-performance liquid chromatography coupled with tandem mass spectrometry (LC-MS-MS) in Brazilian bioequivalence studies
(Dustri-verlag Dr Karl FeistleDeisenhofen-muenchenAlemanha, 2006)