ABSTRAK computation and the availability of better inverting techniques. The model was validated ... more ABSTRAK computation and the availability of better inverting techniques. The model was validated by experimental data on chromatographic separation of eugenol on I!Bondapak CIS analytical column, mobile phase methanol-water (80:20), and flow rate 0.5 ml/min, at different solution concentration injection at equilibrium condition. Physical property data required for validation such as equilibrium adsorption isotherm data was determined experimentally, and mass transfer data was calculated from normal correlations and from analytical scale separation. The simulation agreed with experimental data at a Peclet number of 6000, a bed length parameter of 3.0 and number of samples 90.
An ethanolic extract of cloves was analyzed by gas chromatography directly to identify eugenol an... more An ethanolic extract of cloves was analyzed by gas chromatography directly to identify eugenol and other major phenolic compounds without previous separation of other components. Separation was performed on a fused-silica capillary column of 30 m×0.53 mm I.D,, 0.53 /zm film thickness. The detector was a flame ionization detector. Helium gas at a flow-rate of 3 ml/min was used as a carrier gas. The analysis were performed with linear temperature programming. Nine components were detected and special attention was given to the major phenolic compound, eugenol.
Journal of Chromatography B: Biomedical Sciences and Applications, 1996
An ethanolic extract of cloves was analyzed by gas chromatography directly to identify eugenol an... more An ethanolic extract of cloves was analyzed by gas chromatography directly to identify eugenol and other major phenolic compounds without previous separation of other components. Separation was performed on a fused-silica capillary column of 30 m×0.53 mm I.D,, 0.53 /zm film thickness. The detector was a flame ionization detector. Helium gas at a flow-rate of 3 ml/min was used as a carrier gas. The analysis were performed with linear temperature programming. Nine components were detected and special attention was given to the major phenolic compound, eugenol.
A method has been developed for the separation and identification of eugenol in the alcohol extra... more A method has been developed for the separation and identification of eugenol in the alcohol extract of cloves directly without having to previously separate other components. Extraction of eugenol with alcohol is followed by analysis with high-performance liquid chromatography. Separation by reversed-phase chromatography on low-polarity laBondapak C 18 was achieved with isocratic elution. Tentative identification is based on chromatographic appearance of a peak with retention time 5.54 min for pure standard reference eugenol. The identification of eugenol was confirmed by gas chromatography/mass spectrometry analysis.
ABSTRAK computation and the availability of better inverting techniques. The model was validated ... more ABSTRAK computation and the availability of better inverting techniques. The model was validated by experimental data on chromatographic separation of eugenol on I!Bondapak CIS analytical column, mobile phase methanol-water (80:20), and flow rate 0.5 ml/min, at different solution concentration injection at equilibrium condition. Physical property data required for validation such as equilibrium adsorption isotherm data was determined experimentally, and mass transfer data was calculated from normal correlations and from analytical scale separation. The simulation agreed with experimental data at a Peclet number of 6000, a bed length parameter of 3.0 and number of samples 90.
An ethanolic extract of cloves was analyzed by gas chromatography directly to identify eugenol an... more An ethanolic extract of cloves was analyzed by gas chromatography directly to identify eugenol and other major phenolic compounds without previous separation of other components. Separation was performed on a fused-silica capillary column of 30 m×0.53 mm I.D,, 0.53 /zm film thickness. The detector was a flame ionization detector. Helium gas at a flow-rate of 3 ml/min was used as a carrier gas. The analysis were performed with linear temperature programming. Nine components were detected and special attention was given to the major phenolic compound, eugenol.
Journal of Chromatography B: Biomedical Sciences and Applications, 1996
An ethanolic extract of cloves was analyzed by gas chromatography directly to identify eugenol an... more An ethanolic extract of cloves was analyzed by gas chromatography directly to identify eugenol and other major phenolic compounds without previous separation of other components. Separation was performed on a fused-silica capillary column of 30 m×0.53 mm I.D,, 0.53 /zm film thickness. The detector was a flame ionization detector. Helium gas at a flow-rate of 3 ml/min was used as a carrier gas. The analysis were performed with linear temperature programming. Nine components were detected and special attention was given to the major phenolic compound, eugenol.
A method has been developed for the separation and identification of eugenol in the alcohol extra... more A method has been developed for the separation and identification of eugenol in the alcohol extract of cloves directly without having to previously separate other components. Extraction of eugenol with alcohol is followed by analysis with high-performance liquid chromatography. Separation by reversed-phase chromatography on low-polarity laBondapak C 18 was achieved with isocratic elution. Tentative identification is based on chromatographic appearance of a peak with retention time 5.54 min for pure standard reference eugenol. The identification of eugenol was confirmed by gas chromatography/mass spectrometry analysis.
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