Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Javier Tabera"'
Autor:
Alejandro Ruiz-Rodríguez, Guillermo Reglero, Ángeles Guinda, T. Albi, Javier Tabera, Elena Ibáñez, Francisco J. Señoráns
Publikováno v:
Journal of Agricultural and Food Chemistry. 52:4774-4779
Countercurrent supercritical fluid extraction (CC-SFE) at a pilot scale plant was used for fractionation of high-added-value products from a raw extract of olive leaves in hexane. Compounds found in the raw extract were waxes, hydrocarbons, squalene,
Autor:
Javier Tabera, Francisco J. Señoráns, Guillermo Reglero, Alejandro Ruiz-Rodríguez, Elena Ibáñez
Publikováno v:
The Journal of Supercritical Fluids. 26:129-135
Optimization of the countercurrent supercritical fluid extraction (CC-SFE) conditions to obtain high quality brandy aroma extracts is presented. The main variables that influence CC extraction selectivity and efficiency have been studied, such as ext
Publikováno v:
Journal of the Science of Food and Agriculture. 79:1275-1279
A method for the analysis of fruit headspace using a programmed temperature vaporiser (PTV) gas chromatographic injector as an intermediate trap is proposed. The method consists of a purge of the volatile compounds into the PTV glass-liner filled wit
Publikováno v:
Journal of Agricultural and Food Chemistry. 47:1400-1404
Two-step supercritical fluid extraction of rosemary leaves at selected conditions of pressure and temperature is proposed to divide the oleoresin into two fractions with different antioxidant activities and essential oil compositions. Rosemary leaves
Publikováno v:
Food Chemistry. 63:281-286
A method based on headspace solid-phase microextraction (HS-SPME) has been developed for the analysis of volatile compounds in fruits. Conditions of sampling have been tuned. Repeatability and recoveries obtained with this method have been determined
Publikováno v:
Journal of Chromatography A. 823:313-319
Different packed capillary columns were evaluated for carotenoid separation by subcritical fluid chromatography with neat CO2. Packed capillary columns studied involved the use of silica particles deactivated with different methods and particles coat
Autor:
Elena Ramos, Sara López-Sebastián, Jose M. Bueno, Guillermo Reglero, Elena Ibáñez, Javier Tabera, Lorenzo Ballester
Publikováno v:
Journal of Agricultural and Food Chemistry. 46:13-19
Treatment with supercritical CO2 is proposed for deodorizing antioxidant rosemary extracts obtained by steam distillation and Soxhlet extraction. The process conditions have been optimized by applying a Taguchi experimental design with the aim of obt
Publikováno v:
Journal of Agricultural and Food Chemistry. 45:3940-3943
A sample collection method is proposed for off-line coupling supercritical fluid extraction/gas chromatography (SFE/GC) through a programmed temperature vaporizer (PTV) and using a variable restrictor. Experiments were carried out to obtain the most
Publikováno v:
Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 201:587-591
Lentil (Lens culinaris var. vulgaris) flour was naturally fermented for 4 days at different temperatures (28 degrees C, 35 degrees C and 42 degrees C) and concentrations (79 milligrams, 150 milligrams and 221 milligrams). Samples were analysed to est
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
Digital.CSIC: Repositorio Institucional del CSIC
Consejo Superior de Investigaciones Científicas (CSIC)
instname
Digital.CSIC: Repositorio Institucional del CSIC
Consejo Superior de Investigaciones Científicas (CSIC)
Operation of a micro steam distillation—solvent extraction (SDE) device in two different modes, namely at reduced pressure and involving the concentration of the dynamic headspace resulting from purging the sample with an inert gas, was investigate