Effectively improve the quality of camellia oil by the combination of supercritical fluid extraction and molecular distillation (SFE-MD)

Introduction: The effects of the grinding procedure on the supercritical fluid extraction (SFE) yields of eugenol, β-caryophyllene, α-humulene, and eugenyl acetate from clove are discussed in detail in this paper. Methods: For this purpose, five grinding procedures were employed: 1) continuous 1-min grinding, 2) continuous 2-min grinding, 3) two 1-min grinding periods with 6-min stop in between 4) continuous 4-min grinding, and 5) four 1-min grinding periods with 6-min stops in between. After that, the extractor was filled with 12 g of milled clove obtained using one of the grinding procedures while the other SFE parameters were kept constant (pressure of 150 bar, temperature of 40 °C, supercritical CO2 flow rate of 1.03×10−4 kg/s, static time of 20 min, and dynamic extraction time of 15 min). Then, the composition of the extract was evaluated by gas chromatography (GC). Conclusion: It was found that the grinding procedure has considerable effects on the recoveries of eugenol, β-caryophyllene, α-humulene, and eugenyl acetate from clove, and employing four 1-min grinding periods with 6-min stops in between as the grinding procedure gave the highest content of the aforementioned components in the extract.

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

Plant Soil and Environment ◽

10.17221/4125-pse ◽

2011 ◽

Vol 49 (No. 6) ◽

pp. 277-282 ◽

Cited By ~ 17

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.

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

Science and Technology Development Journal ◽

10.32508/stdj.v18i2.1062 ◽

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.

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Preparation and Application of Standardized Typical Volatile Components Fraction from Turmeric (Curcuma longa L.) by Supercritical Fluid Extraction and Step Molecular Distillation

Molecules ◽

10.3390/molecules23071831 ◽

2018 ◽

Vol 23 (7) ◽

pp. 1831 ◽

Cited By ~ 5

Author(s):

Guang-Ping Lv ◽

De-Jun Hu ◽

Yan-Qing Zhou ◽

Qing-Wen Zhang ◽

Jing Zhao ◽

...

Keyword(s):

Supercritical Fluid Extraction ◽

Supercritical Fluid ◽

Molecular Distillation ◽

Curcuma Longa ◽

Volatile Components ◽

Separation And Purification ◽

Fluid Extraction ◽

Total Recovery ◽

Individual Calibration ◽

The Individual

A green and reliable method using supercritical fluid extraction (SFE) and molecular distillation (MD) was optimized for the separation and purification of standardized typical volatile components fraction (STVCF) from turmeric to solve the shortage of reference compounds in quality control (QC) of volatile components. A high quality essential oil with 76.0% typical components of turmeric was extracted by SFE. A sequential distillation strategy was performed by MD. The total recovery and purity of prepared STVCF were 97.3% and 90.3%, respectively. Additionally, a strategy, i.e., STVCF-based qualification and quantitative evaluation of major bioactive analytes by multiple calibrated components, was proposed to easily and effectively control the quality of turmeric. Compared with the individual calibration curve method, the STVCF-based quantification method was demonstrated to be credible and was effectively adapted for solving the shortage of reference volatile compounds and improving the QC of typical volatile components in turmeric, especially its functional products.

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

Zeitschrift für Naturforschung B ◽

10.1515/znb-2005-1113 ◽

2005 ◽

Vol 60 (11) ◽

pp. 1197-1201 ◽

Cited By ~ 9

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.

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YIELD AND QUALITY OF ONION FLAVOR OIL OBTAINED BY SUPERCRITICAL FLUID EXTRACTION AND OTHER METHODS

Journal of Food Process Engineering ◽

10.1111/j.1745-4530.1997.tb00414.x ◽

1997 ◽

Vol 20 (2) ◽

pp. 107-124 ◽

Cited By ~ 26

Author(s):

ADITI DRON ◽

DANIEL E. GUYERU ◽

DOUGLAS A. GAGE ◽

CARL T. LIRA

Keyword(s):

Supercritical Fluid Extraction ◽

Supercritical Fluid ◽

Fluid Extraction ◽

Yield And Quality

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

Horticultural Science ◽

10.17221/3818-hortsci ◽

2011 ◽

Vol 30 (No. 2) ◽

pp. 73-79 ◽

Cited By ~ 8

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.  

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A comparative study of various oil extraction techniques from plants

Reviews in Chemical Engineering ◽

10.1515/revce-2013-0038 ◽

2014 ◽

Vol 30 (6) ◽

Cited By ~ 17

Author(s):

Jibrin Mohammed Danlami ◽

Agus Arsad ◽

Muhammad Abbas Ahmad Zaini ◽

Hanizam Sulaiman

Keyword(s):

Supercritical Fluid Extraction ◽

Supercritical Fluid ◽

Extraction Efficiency ◽

Soxhlet Extraction ◽

Extraction Techniques ◽

Fluid Extraction ◽

Ultrasound Assisted Extraction ◽

Microwave Assisted ◽

Assisted Extraction

AbstractResearchers have shown that techniques such as microwave-assisted extraction, ultrasound-assisted extraction, pressurized liquid extraction, and supercritical fluid extraction developed for extraction of valuable components from plants and seed materials have been successfully used to effectively reduce the major shortcomings of the traditional method such as Soxhlet extraction. These include shorter extraction time, increase in yield of extracted components, decrease in solvent consumption, and improvement of the quality of extracts. This review presents a detailed description of the principles and mechanisms of the various extraction techniques for better understanding and summarizes the potential of these techniques in the extraction of oil from plants and seed materials. Discussions on some of the parameters affecting the extraction efficiency are also highlighted, with special emphasis on supercritical fluid extraction. A comparison of the performance of traditional Soxhlet extraction with that of other extraction techniques is also presented.

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