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Determination of phosphates in fertilizers by mid-infrared spectroscopy with Fourier transform in the Attenuated Total Reflectance mode
ArticleAbstract: The present work evaluates the real potential of FTIR spectroscopy (in the middle IR), measuring attPalabras claves:Attenuated Total Reflectance, fertilizers, FTIR Spectroscopy, PhosphatesAutores:Ayala C., Brunetto R., Delgado Y., Maximo Gallignani, Quintero A., Quiroz C.Fuentes:scopusDetermination of theobromine, theophylline and caffeine in cocoa samples by a high-performance liquid chromatographic method with on-line sample cleanup in a switching-column system
ArticleAbstract: A simple reversed-phase high-performance liquid chromatographic method was developed for the determiPalabras claves:caffeine, COCOA, Column-switching, HPLC, Solid-phase extraction, Theobromine, TheophyllineAutores:Brunetto R., Delgado Y., Gómez A., Gutiérrez L., Maximo Gallignani, Ramos G., Romero C., Zambrano A.Fuentes:googlescopusRP-HPLC-DAD determination of free amino acids in cocoa samples during fermentation and roasting
ArticleAbstract: Amino acids (AA) composition in cocoa beans can predict the synthesis of compounds which affect cocoPalabras claves:COCOA, Derivatization, Liquid chromatography, column-switching, Microwave radiationAutores:Ayala C., Clavijo S., Delgado Y., María del Rosario Brunetto, Máximo Gallignani , Orozco W., Zambrano A.Fuentes:googlescopusThe effect of fermentation and roasting on free amino acids profile in Criollo cocoa (Theobroma cacao L.) grown in Venezuela
ArticleAbstract: The development of cocoa flavor and aroma is a complex phenomenon that depends on how the fermentatiPalabras claves:Aroma precursors, BSTFA, Gas chromatography, Hydrophobic amino acids, Mass spectrometry, MICROWAVE, Trimethylsilyl derivativesAutores:Ayala C., Clavijo S., Delgado Y., María del Rosario Brunetto, Maximo Gallignani, Orozco W., Zambrano A.Fuentes:googlescopus