Results 111 to 120 of about 10,436 (227)

Analytical Strategies for Tocopherols in Vegetable Oils: Advances in Extraction and Detection

open access: yesPharmaceuticals
Tocopherols, major lipid-soluble components of vitamin E, are essential natural products with significant nutritional and pharmacological value. Their structural diversity and uneven distribution across vegetable oils require accurate analytical ...
Yingfei Liu   +4 more
doaj   +1 more source

Modelagem matemática do processo de extração supercrítica de óleo essencial de Ho-Sho (Cinnamomum camphora Nees & Eberm var. linaloolifera Fujita) utilizando CO2 [PDF]

open access: yes, 2003
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.Neste trabalho estudou-se o processo de extração supercrítica de óleo essencial de folhas de uma variedade de Canforeira ...
Steffani, Evandro
core  

A rapid supercritical fluid extraction method for the detection of 2-alkylcyclobutanones in gamma irradiated beef and chicken

open access: yes, 1998
2-alkylcyclobutanones have been successfully used as chemical markers for irradiated foods. Unfortunately, most sample preparation, and isolation methods for these markers from their food matrices involve a long and very tedious clean-up regimen prior to
Ismail, H., Sumar, S., Tewfik, I.
core   +1 more source

Separation of enantiomers of ibuprofen on chiral stationary phases by packed column supercritical fluid chromatography

open access: yes, 2001
A packed column supercritical fluid chromatography (SFC) method for the separation of ibuprofen enantiomers on a chiral stationary phase and CO2 with modifier as mobile phase has been developed at an analytical scale. Among 11 different stationary phases
Johannsen, Monika
core  

supercritical fluid chromatography

open access: yes, 2014
Citation: 'supercritical fluid chromatography' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.S06139 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms ...
openaire   +1 more source

Obtenção de extrato de erva baleeira (Cordia verbenacea D.C.) por diferentes técnicas: medida da atividade biológica, modelagem matemática e determinação do equilíbrio de fases [PDF]

open access: yes, 2009
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Alimentos.A erva baleeira (Cordia verbenacea) é uma planta da Família das Borraginaceae, encontrada nas restingas marítimas de quase
Michielin, Eliane Maria Zandonai
core  

What Type of Research Is Done in the Laboratory of Pharmaceutical Analytical Chemistry of the University of Geneva?

open access: yesCHIMIA, 1997
This article presents briefly the main research projects developed in the Laboratory of Pharmaceutical Analytical Chemistry at the University of Geneva.
Jean-Luc Veuthey, Philippe Christen
doaj  

Capillary supercritical fluid chromatography combined with atmospheric pressure chemical ionisation mass spectrometry for the investigation of photoproduct formation in the sunscreen absorber 2-ethylhexyl-p-methoxycinnamate

open access: yes, 1996
The photoproducts formed on ultraviolet irradiation of the sunscreen absorber trans-2-ethylhexyl-p-methoxycinnamate, were separated and characterised using a new combined technique, capillary supercritical fluid chromatography-atmospheric pressure ...
Moulder, R   +6 more
core  

Enantioselective separation of certain analytes using supercritical fluid chromatography and high performance liquid chromatography [PDF]

open access: yes, 2017
(EN) Cellulose tris-(3,5-dimethylphenylcarbamate) chiral stationary phase was used for separation of selected 24 analytes. Enantioseparations were realized using two systems, high performance liquid chromatography and supercritical fluid chromatography ...
Martínková, Monika
core  

Impact of injection solvents on supercritical fluid chromatography. [Elektronisk resurs]

open access: yes, 2013
Even though there has been a rapid development in instrumentation and applications of supercritical fluid chromatography (SFC), relatively little is known about retention mechanisms compared to high-performance liquid chromatography (HPLC).
Sandahl, Margareta,   +2 more
core   +1 more source

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