• Title, Summary, Keyword: supercritical fluid extraction

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Quality and characteristics of ginseng seed oil treated using different extraction methods

  • Lee, Myung-Hee;Kim, Sung-Soo;Cho, Chang-Won;Choi, Sang-Yoon;In, Gyo;Kim, Kyung-Tack
    • Journal of Ginseng Research
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    • v.37 no.4
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    • pp.468-474
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    • 2013
  • Ginseng seed oil was prepared using compressed, solvent, and supercritical fluid extraction methods of ginseng seeds, and the extraction yield, color, phenolic compounds, fatty acid contents, and phytosterol contents of the ginseng seed oil were analyzed. Yields were different depending on the roasting pretreatment and extraction method. Among the extraction methods, the yield of ginseng seed oil from supercritical fluid extraction under the conditions of 500 bar and $65^{\circ}C$ was the highest, at 17.48%. Color was not different based on the extraction method, but the b-value increased as the roasting time for compression extraction was increased. The b-values of ginseng seed oil following supercritical fluid extraction were 3.54 to 15.6 and those following compression extraction after roasting treatment at $200^{\circ}C$ for 30 min, were 20.49, which was the highest value. The result of the phenolic compounds composition showed the presence of gentisic acid, vanillic acid, ferulic acid, and cinnamic acid in the ginseng seed oil. No differences were detected in phenolic acid levels in ginseng seed oil extracted by compression extraction or solvent extraction, but vanillic acid tended to decrease as extraction pressure and temperature were increased for seed oil extracted by a supercritical fluid extraction method. The fatty acid composition of ginseng seed oil was not different based on the extraction method, and unsaturated fatty acids were >90% of all fatty acids, among which, oleic acid was the highest at 80%. Phytosterol analysis showed that ${\beta}$-sitosterol and stigmasterol were detected. The phytosterol content of ginseng seed oil following supercritical fluid extraction was 100.4 to 135.5 mg/100 g, and the phytosterol content following compression extraction and solvent extraction was 71.8 to 80.9 mg/100 g.

The Current Status of Supercritical Fluid Extraction Technology and Industrial Applications (초임계유체 추출 기술 및 상업화 현황)

  • Ju Young-Woon;Lee Moon Young;Woo Moon Jea;Byun Sang Yo
    • KSBB Journal
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    • v.20 no.5
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    • pp.329-337
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    • 2005
  • Because of their unique properties, supercritical fluids have been known as one of the most promising materials for the future technology. Supercritical fluid technologies have been widely applied to various operations such as extraction, impregnation, nano-particle generation, oxidation, reaction etc. Industrial applications, especially their successful usage of supercritical fluid, have been reviewed. A special case for the first successful industrial application of supercritical $CO_2$ extraction in Korea was reviewed. Its unique characteristics of enriched antioxidant, $'\grmma-tocopherol'$ enabled this industrial application in Korea in spite of its low market price. Also its size and operation conditions were known as world records.

Extraction of Docosahexaenoic Acid (DHA) from Lyophilized Thraustochitrium sp.

  • CHO, JOONG-HOON;GWI-SUK HEO;JI-WON YANG
    • Journal of Microbiology and Biotechnology
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    • v.6 no.5
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    • pp.358-360
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    • 1996
  • Solvent extraction, soxhlet method, and supercritical fluid extracion were considered, respectively, as the method of choice for the recovery of DHA from lyophilized Thraustochitrium sp., and the results of corresponding extraction were compared. Supercritical fluid extraction seems to be the most appropriate process with respect to time, process simplicity, and extractant intoxicity.

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Antimicrobial Activity of Extracted by Supercritical Fluid from Origanum vulgare, Cinnamomum cassia, Chamaecyparis obtusa and Scutellariae baicalensis (오레가노, 육계, 편백 및 황금의 초임계 유체 추출물의 항균 활성)

  • Kim, Woo-Jin;Cho, Jun-Young;Choi, Chang-Suk;Yoon, Gee-Sun;Lee, Won-Kyu;Ryu, Yeon-Woo
    • KSBB Journal
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    • v.23 no.2
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    • pp.147-152
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    • 2008
  • The variety of functional plants has an attention for new natural food preservation and natural antiseptic development. The extracts from functional plants with various methods (ethanol extraction, hot water extraction and supercritical fluid extraction) tested antimicrobial activity against 10 strains including the pathogenic and food poisoning bacteria, the yeast and fungi. The antimicrobial activities of supercritical fluid extracts were shown higher than ethanol extract and hot water extract when tested with disc-diffusion method and minimum inhibitory concentration (MIC). Antimicrobial activity of supercritical fluid extract was two times higher than ethanol extract in Cinnaonomum cassia. In addition, the supercritical fluid extractions of Chamaecyparis obtuas and the C. cassia showed the higher yield than Origanum vulgare and Scutellariae baicalensis. The supercritical fluid extract of C. cassia showed an antimicrobial activity against all strains tested. The supercritical fluid extract of S. baicalensis showed strong antimicrobial activity on Listeria monocytogenes. Supercritical fluid extraction of O. vulgare and C. obtuas showed strong antimicrobial activity on Salmonella typhimuriium. In MIC test, C. obtuas was shown the best natural material for the preparation of natural antimicrobial agent by supercritical fluid extraction. In conclusion, these results suggest that supercritical fluid extraction technique was effective to obtain functional ingredient with higher antimicrobial activity in the development of new antimicrobial reagent from natural materials.

Supercritical Fluid Extraction of Physiologically Active materials from Agaricus blazei Fruiting Bodies (Agaricus blazei 자실체로부터 초임계 유체를 이용한 생리활성물질 추출공정)

  • 최정우
    • KSBB Journal
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    • v.15 no.4
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    • pp.408-410
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    • 2000
  • The supercritical fluid extraction(SFE) technique was applied for the isolation and purification of nonpolar physiologically acitve mateials from Agaricus blazei fruiting bodies. the qualitative analysis of extract was accomplished by gas chromatography-mass spectrometer(GC-MS) and extract was determined as linoleic acid(cis-9 cis-12-octadecadienoic acid) In order to obtain the optimum operating conditions of supercritical fluid extraction process the various temperatures and pressures were applied for process operation. From the comparison of exraction efficiencies $50^{\circ}C and 200 kg_f/cm^2$ were determined as optimum conditions.

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Effect of Solvents as Subcritical and Supercritical Fluid on Decomposition and Extraction of Used Automotive Tire (아임계와 초임계유체로써 폐타이어 분해와 추출에 미치는 용매의 영향)

  • Kang, W.S.;Na, D.Y.;Kim, I.S.;Han, S.B.;Park, P.W.
    • Elastomers and Composites
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    • v.34 no.3
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    • pp.239-246
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    • 1999
  • Side wall samples from a used automotive tire were subjected to subcritical and supercritical decomposition and extraction with three solvents, water, 28% ammonia solution and ammonia. For 6mm cube samples the rate of supercritical extraction with water followed a first-order kinetics with an activation energy of 140 kJ/mol. Solvent power of 28% ammonia so lotion at supercritical condition was found to be higher than supercritical water at initial extraction as pressure decreased. These phenomena were considered to be an effect of ammonia involved in water.

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Removal of toxic compounds from Acer tegmentosum using supercritical fluid extraction (초임계유체 추출을 이용한 산겨릅나무로부터 독성성분들의 제거)

  • Pyo, Dongjin;Jin, Jungeun
    • Analytical Science and Technology
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    • v.21 no.5
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    • pp.392-396
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    • 2008
  • Acer tegmentosum is a tree used to treat various liver diseases in Korea. There have been some concern regarding the safety of Acer tegmentosum due to some toxic chemical compounds in its stems. Supercritical fluid extraction (SFE) was employed to develop a removing method of toxic compounds from Acer tegmentosum. The toxic compounds were effectively extracted with ethanol modified supercritical fluid $CO_2$. The optimum condition of SFE was 100 bar of pressure, $40^{\circ}C$ of extraction temperature, 3 mL/min of $CO_2$ flow rate, 0.2 mL/min of modifier (ethanol) flow rate.

Efficient Extraction of Bioethanol from Freshwater Cyanobacteria Using Supercritical Fluid Pretreatment

  • Pyo, Dongjin;Kim, Taemin;Yoo, Jisun
    • Bulletin of the Korean Chemical Society
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    • v.34 no.2
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    • pp.379-383
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    • 2013
  • For the production of ethanol from freshwater cyanobacteria, a new pretreatment method using supercritical fluid was introduced. In this study, it was found that the supercritical fluid could penetrate inside the cell wall and help to liberate starch from cyanobacterial cells which resulted in the increase of the efficiency of ethanol production. For Microcystis aeruginosa, supercritical fluid pretreatment increased the amount of ethanol produced from cyanobacteria from 1.53 g/L to 2.66 g/L. For Anabaena variabilis, the amount of ethanol was increased from 1.25 g/L to 2.28 g/L. With use of supercritical fluid pretreatment, the efficiency of the process to obtain higher ethanol yields from freshwater cyanobacteria was improved upto 80%. The optimum temperature and pressure conditions for supercritical fluid pretreatment were determined as the temperature of $40^{\circ}C$ and the pressure of 120 atm. This study demonstrates the feasibility of using supercritical fluid pretreatment for ethanol production using freshwater cyanobacteria.

Comparison of Essential Oil Composition Extracted from Agastache rugosa by Steam Distillation and Supercritical Fluid Extraction (수증기 증류법과 초임계유체 추출법으로 분리한 배초향의 정유성분 조성 비교)

  • 김근수;김삼곤;김용하;김영회;이종철
    • Journal of the Korean Society of Tobacco Science
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    • v.23 no.1
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    • pp.65-70
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    • 2001
  • In order to compare the extraction patterns of main components from the raw material between the extraction methods, the aerial parts (dried stem, leaves, and flowers) of Agastache rugosa were extracted by SDE simultaneous steam distillation & extraction) and SFE (supercritical fluid extraction). Volatile components of essential oil and extract were identified by GC and GC-MSD. The contents of essential oil extracted by SDE were 0.49% in aerial part of Agastache rugosa on dry basis. Major components were methyl chavicol(27.2%), isomenthone(24.6%), hexadecanoic acid(13.0%). menthone (5.5%) among 32 kinds of components confirmed in essential oil. On the other hand, the contents of SFE extracts revealed 3.21% on dry basis, 6 times higher than those of SDE. Major components were isomenthone(15.3%), hexadecanoic acid(13.7%), methyl chavicol(12.6%), benzoic acid(3.8%) among 33 kinds of components identified in extract.

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Detection of estrogenic hormone 17β-estradiol in soil samples by a recombinant yeast bioassay and supercritical fluid extraction

  • Shim, Jae-Han;Kim, Mi-Ra;Topp, Edward;Choi, Jeong-Heui;Mamun, Iqbal Rouf
    • Korean Journal of Environmental Agriculture
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    • v.27 no.4
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    • pp.447-455
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    • 2008
  • Recombinant yeast estrogenicity (YES) assay was used as a bioanalytical tool in order to screen $17{\beta}$-estradiol in the soil samples collected from different sites of South Korea. Solvent extraction and supercritical fluid extraction (SFE) methods were compared for the extraction of the estradiol from the soils. Most high detection of the estradiol based on YES assay was observed in the soils extracted with methanol. Different types of estrogenic hormones including $17{\beta}$-estradiol were suggested to be possibly exiting in the soils, since the methanol extracts of the soils showed an estrogenic activity that was not observed in the hexane extracts of the soil. SFE extracts showed estrogenic activity in some of the samples but methanol extract showed best activity.