> CROMATOGRAFÍA LÍQUIDA
Determination of Vitamin E and Vitamin A in infant formula and adult nutritionals by normal-phase high-performance liquid chromatography : collaborative studyADRIENNE McMAHON, Autor ; S. CHRISTIANSEN, Colaborador ; F.-F. CHEE, Colaborador ; A. CHUA, Colaborador ; H. BRADDOCK, Colaborador ; B. GILL, Colaborador ; RAQUEL DE GUZMAN, Colaborador ; K. KOHLER, Colaborador ; D.P. LABITAN, Colaborador ; J. LE GRANDOIS, Colaborador ; E. MARCEAU, Colaborador ; F. MARTIN, Colaborador ; S. MENG JENSEN, Colaborador ; L. MEYER, Colaborador ; D. PIOT, Colaborador ; L. RAEL, Colaborador ; KAREN SCHIMPF, Colaborador ; M. THOMPSON, Colaborador ; TORRES, MARINA, Colaborador | 2016The main objective of the AOAC Stakeholder Panel on Infant Formula and Adult Nutritionals (SPIFAN) project is to establish international consensus methods for infant formula and adult nutritionals, which will benefit intermarket supply and dispu[...]
documento electrónicoTORRES, MARINA ; BALDIGA, NATALIA ; AMUEDO, VIVIANA ; TORRE, ALEJANDRA | Montevideo [URUGUAY] : Laboratorio Tecnológico del Uruguay (LATU) | 2008La Fortificación de alimentos es muy común en estos días. Nuestro país está alineado con esta tendencia y está desarrollando muchos productos nuevos fortificados. Uno de esos productos son las galletitas fortificadas. Nosotros trabajamos en un m[...]
Effect of coexisting fat on the extraction of tocopherols from tissues after saponification as a pretreatment for HPLC determinationThe influence of coexisting fat on the extraction of tocopherols (Toc) and tocol, as an internal standard, with n-hexane after saponification was studied.
Enantioselective Determination of Protein Amino Acids in Fertilizers by Liquid Chromatography−Tandem Mass Spectrometry on Chiral Teicoplanin Stationary PhaseLUKAS TAUJENIS, Autor ; VILMA OLSAUSKAITE, Autor ; AUDRIUS PADARAUSKAS, Autor | 2014
Extraction procedures for the liquid chromatographic determination of thiamin riboflavin and vitamin B6 in foodstuffsNDAW, S., Autor ; AOUDÉ-WERNER, D. , Autor ; BERGAENTZLE, M., Autor ; HASSELMANN, C., AutorTreatment with a mixture of enzymes (a-amylase, papain and acid phosphatase) led to the release in a single step of the different forms (phosphorylated and protein-bound) of the vitamins B1, B2 and B6 present in various food samples, not supplem[...]
Article : documento electrónico
High performance liquid chromatographic determination of caffeine in decaffeinated coffee, tea, and beverage productsSAMY H. ASHOOR, Autor ; GEORGE J. SEPERICH, Autor ; WOODROW C. MONTE, Autor ; JIM WELTY, Autor |A method was developed for determining caffeine in decaffeinated coffee, tea, and beverage products by high performance liquid chromatography (HPLC). The HPLC system consisted of a Bio-Sil ODS-5S C18 column, methanol-water (25 + 75) mobile phase[...]
texto impresoA high performance liquid chromatography (HPLC) method has many advantages when compared with conventional methods for analysis of lactose in milk.
documento electrónicoM.MÍGUEZ BERNÁRDEZA, Autor ; J DE LA MONTAÑA MIGUÉLEZ, Autor ; J. GARCIA QUEIJEIRO, AutorThe major components in chestnut (Castanea sativa Mill) are carbohydrates, mainly starch, followed by sucrose. This disaccharide is one of the most important parameters for the assessment of the commercial quality of these fruits. In this study [...]
texto impresoTaurine (2-aminoethanesulfonic acid) is a conditionally essential amino acid. While it can be synthesized by healthy adults from methionine and cysteine and it can be absorbed from foods (generally skeletal muscle) that contain it, preterm infan[...]
texto impresoThe amino acid taurine (2-aminoethanesulfonic acid) is present in many sports drinks claiming to provide you with some special advantage. While taurine is not incorporated into proteins, our bodies contain a good amount (approximately 70 g in a [...]
texto impresoSeparation of polar compounds on polar stationary phases with partly aqueous eluents is by no means a new separation mode in LC. The first HPLC applications were published more than 30 years ago, and were for a long time mostly confined to carbo[...]
Identification and determination of glycosides in tobacco leaves by liquid chromatography with atmospheric pressure chemical ionization tandem mass spectrometryTAO PANG, Autor ; Z. YUAN, Autor ; Y. DAI, Autor ; CH. WANG, Autor ; J. YANG, Autor ; L. PENG, Autor ; GUOWANG XU, Autor | 2007HPLC-atmospheric pressure chemical ionization MS (HPLC-APCI-MS) was used to screen and identify glycosides in tobacco leaf. MS/MS and MS3 and photodiode array (PDA) detection were also used in the characterization. A total of 12 glycosides were [...]
documento electrónicoÚRSULA WOLWER-RIECK, Autor ; WERNER TOMBERG, Autor ; ANDREAS WAWRZUN, AutorThe stability of the two steviol glycosides stevioside and rebaudioside A and the possible formation of the aglycon steviol in different soft drinks were analyzed in samples spiked with stevioside or rebaudioside A after 24, 48, and 72 h storage[...]
Isotope dilution liquid chromatography. Mass spectrometry methods for fat and water soluble vitamins in nutritional formulationsKAREN W. PHINNEY, Autor ; RIMMER, CATHERINE, Autor ; JEANICE BROWN THOMAS, Autor ; SANDER, LANE C., Autor ; SHARPLESS, KATHERINE E., Autor ; WISE, STEPHEN A., AutorVitamins are essential to human health, and dietary supplements containing vitamins are widely used by individuals hoping to ensure they have adequate intake of these important nutrients. Measurement of vitamins in nutritional formulations is ne[...]