scholarly journals Determination of essential oil content in caraway (Carum carvi L.) species by means of supercritical fluid extraction

2011 ◽  
Vol 49 (No. 6) ◽  
pp. 277-282 ◽  
Author(s):  
J. Sedláková ◽  
B. Kocourková ◽  
L. Lojková ◽  
V. Kubáň
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Small Samples ◽  
Fluid Extraction ◽  
Carum Carvi ◽  
Main Portion

Dependently on planting conditions caraway fruits contain 1–9% of essential oils consisting of about 30 compounds. Carvone and limonene account for the main portion, about 95%. To evaluate the quality of various registered caraway (Carum carvi L.) cultivars (Kepron, Prochan and Rekord) planted during 1998–2000, regarding the effect of sample grinding and preparation, plant treatment and time of harvest, the amounts of essential oil and the carvone/limonene ratio were determined. Both whole and ground caraway seeds were extracted. As obvious from the results, SFE is not suitable for the determination of essential oils in whole seeds since the results are lower in comparison with those of ground caraway. The way of grinding was also examined. Of the three mills used, a splintery mill VIPO seemed to be the most suitable. Further, the amount of essential oil was studied in caraway gathered at the beginning of maturation (sample A) and at full ripeness (sample B) of caraway seeds. It was found that the samples gathered at full ripeness (samples B) had more essential oil. It was also concluded that the use of the regulator Roundup Bioaktiv during caraway maturation to unite the ripening of achenes in the main umbel and the first-order umbels, and the use of fungicides (Alert S and Prelude 10) affected positively the amount of essential oil in caraway. Possibilities of SFE application for the essential oil determination in small samples gathered during breeding were investigated. The results were used as a one of the criteria during breeding. Classical way of the essential oil determination does not allow this option. An alternative method for the isolation and determination of essential oils – supercritical fluid extraction (SFE) – was investigated in this study.

scholarly journals The essential oil content in caraway species (Carum carvi L.)

2011 ◽  
Vol 30 (No. 2) ◽  
pp. 73-79 ◽  
Author(s):  
J. Sedláková ◽  
B. Kocourková ◽  
L. Lojková ◽  
V. Kubáň
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Oil Content ◽  
Steam Distillation ◽  
Common Method ◽  
Fluid Extraction ◽  
Main Portion

Caraway fruits contain 1–6% of essential oils consisting of about 30 compounds, from which carvone and limonene account form the main portion, about 95%. To evaluate the quality of various caraway cultivars, the amounts of essential oils and the carvone/limonene ratio were measured. The most common method of essential oil evaluation is steam distillation in accordance with Standard ČSN 58 0110, but an alternative method – supercritical fluid extraction (SFE) – was also investigated in this paper. Ground caraway fruits were extracted under different SFE conditions (pressure, temperature, use of modifiers). Released compounds (carvone and limonene) were quantified by GC.  

scholarly journals Determination of caffeine content and the volatile compound in some products of roasted and instant coffee in Vietnam

2015 ◽  
Vol 18 (2) ◽  
pp. 85-93
Author(s):  
Quyen Phuong Nguyen ◽  
Tuyet Thi Ngoc Nguyen ◽  
Phung Thi Kim Le ◽  
Quan Thanh Pham
Keyword(s):  
Volatile Compounds ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Volatile Compound ◽  
Fluid Extraction ◽  
Roasted Coffee ◽  
Instant Coffee ◽  
Caffeine Content

The aims of this study was to evaluate the quality of coffee in Vietnam market.Two methods Soxhlet and supercritical fluid extraction (SFE) were used to investigate the content of caffeine in 15 coffee samples; in which, 8 sample of roasted coffee and 7 sample of instant coffee. –The content of caffeine in 15 samples was different, and dependent on the object of the manufactures; caffeine is in charge of contribution of bitter and alert for customers. The content of caffeine was about 0.3% - 1.79% for the roasted coffee and 0.32% - 0.88% for the instant coffee. This study was also found out the method to extract the volatile compounds by using SDE and SPME. The major volatile compounds were pyrazine, furan, pyrrole, and pyridine. The number of the volatile compounds was 45 and 49 for SDE and SPME, respectively.

Supercritical CO2 Extraction of Essential Oil from Clove Bud: Effect of Operation Conditions on the Selective Isolation of Eugenol and Eugenyl Acetate

2005 ◽  
Vol 60 (11) ◽  
pp. 1197-1201 ◽  
Author(s):  
Farshad Yazdani ◽  
Morteza Mafi ◽  
Fathollah Farhadi ◽  
Kourosh Tabar-Heidar ◽  
Kioumars Aghapoor ◽  
...  
Keyword(s):  
Essential Oil ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Steam Distillation ◽  
Fluid Extraction ◽  
Operation Conditions ◽  
Eugenyl Acetate ◽  
Assisted Extraction ◽  
Series Of Experiments

The supercritical fluid extraction (SFE) of clove bud essential oil was studied using CO2 as solvent. The effect of operation conditions was analyzed in a series of experiments at temperatures between 325 and 416 K and pressures between 110 and 190 bar. The collected extracts were analyzed and the relative composition of the essential oil was determined. The optimum condition was found in a temperature of 353 K and at a pressure of 190 bar, minimizing the number of extracts to two compounds (eugenol and eugenyl acetate). The extract obtained from clove bud by using supercritical fluid extraction was compared with the essential oil obtained by steam distillation and microwave-assisted extraction by considering both quantity and quality of the product. The oil yield was higher in steam distillation and microwave oven extraction. In contrast, oil extracted by using SFE contained higher amount of eugenol and eugenyl acetate.

Comparison of hydrodistillation and supercritical fluid extraction for the determination of essential oils in aromatic plants

1993 ◽  
Vol 634 (2) ◽  
pp. 297-308 ◽  
Author(s):  
Steven B. Hawthorne ◽  
Marja-Liisa Rickkola ◽  
Katariina Screnius ◽  
Yvonne Holm ◽  
Raimo Hiltunen ◽  
...  
Keyword(s):  
Essential Oils ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Aromatic Plants ◽  
Fluid Extraction

Contribution to the Optimization of a Gas Chromatographic Method by QbD Approach used for Analysis of Essential Oils from Salvia officinalis

2019 ◽  
Vol 70 (6) ◽  
pp. 2015-2020
Author(s):  
Silvia Robu ◽  
Aurelia Romila ◽  
Olimpia Dumitriu Buzia ◽  
Adrian Florin Spac ◽  
Camelia Diaconu ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Plant Material ◽  
Mobile Phase ◽  
Chromatographic Method ◽  
Salvia Officinalis ◽  
Salvia Officinalis L ◽  
Gas Chromatographic Method

Numerous articles on Salvia officinalis L. have been published regarding the composition of their essential oil. The considerable variation found may be due to the quality of the plant material as well as to the methods used for analysis. A simple GC-MS method was developed and optimized in the QbD approach, for the determination of sage essential oils. The optimization of GC-MS analysis was performed using different mobile phase flows, injection volumes, split ratios and temperature programs. The optimized method proved to be simple and can be successfully applied for the determination of sage essential oils.

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