Buscar
Mostrando ítems 41-50 de 171
Chemical characterization of an encapsulated red wine powder and its effects on neuronal cells
(Molecular Diversity Preservation International, 2018-04)
Red wine polyphenols are known for their implications for human health protection, although they suffer from high instability. For this reason, a red wine powder was prepared by freeze-drying encapsulation in maltodextrin/arabic ...
Online solid phase extraction-HPLC-ICP-MS system for mercury and methylmercury preconcentration using functionalised carbon nanotubes for their determination in dietary supplements
(Royal Society of Chemistry, 2018-10)
A hyphenated system was developed for Hg(ii) and methylmercury (MeHg) preconcentration and speciation analysis by the online coupling of solid phase extraction (SPE), high performance liquid chromatography (HPLC) and ...
Polycyclic aromatic hydrocarbons (PAHs) in yerba mate (Ilexparaguariensis St. Hil) traditional infusions (mate and terere)
(Elsevier, 2016-02-01)
This study describes the occurrence of polycyclic aromatic hydrocarbons (PAHs) in traditional yerba maté hot and cold infusions ( mate and tereré), by monitoring the content of benz[a]anthracene, chrysene, benzo[b]fluoranthene, ...
Comparative study of hydrophobicity parameters of novel 5′-carbamates of zidovudine
(Taylor & Francis, 2005-12)
The lipophilic character of a series of 5′-carbamates of zidovudina has been studied. The lipophilicity was measured by means of reversed-phase thin layer chromatography (RP-TLC) and reversed-phase high performance liquid ...
Validation of a liquid chromatography detection method (HPLC-DAD) for the determination of aloin in Aloe vera food productsValidación de un método de detección mediante cromatografía líquida (HPLC-DAD) para la determinación de aloína en productos alimenticios elaborados a partir de sábila (Aloe vera)
(Universidad Nacional, Costa Rica, 2019)
Validation of a liquid chromatography detection method (HPLC-DAD) for the determination of aloin in Aloe vera food productsValidación de un método de detección mediante cromatografía líquida (HPLC-DAD) para la determinación de aloína en productos alimenticios elaborados a partir de sábila (Aloe vera)
(Universidad Nacional, Costa Rica, 2019)
Stabilization and detection of hydrophylloquinone as di-O-methyl derivative
(Elsevier Science, 2016-10)
Phylloquinone is a redox active naphthoquinone involved in electron transport in plants. The function of this reduced form remains unclear due to its instability, which has precluded detection. Herein, a simple method that ...
Multiple response optimization of a QuEChERS extraction and HPLC analysis of diclazuril, nicarbazin and lasalocid in chicken liver
(Elsevier, 2020-05)
A method for the simultaneous determination of three commonly used coccidiostats in chicken liver was developed, comprising a multi-residue QuEChERS (quick, easy, cheap, effective, rugged and safe) extraction step, and a ...
An improved HPLC-DAD method for clavulanic acid quantification in fermentation broths of Streptomyces clavuligerus
(Elsevier, 2016-02-20)
Clavulanic acid (CA) is an important secondary metabolite commercially produced by cultivation of Streptomyces clavuligerus (Sc). It is a potent inhibitor of bacterial beta-lactamases. In this work, a specific and improved ...