• 대한자원환경지질학회:학술대회논문집
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• 대한자원환경지질학회 2005년도 춘계 학술발표회 논문집
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• pp.184-188
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• 2005

• 한국식품위생안전성학회지
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• 제14권4호
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• pp.365-371
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• 1999

인삼시료에 있는 quintozene, tolclofos-methyl 그리고 procymidone 등의 농약성분을 추출하기 위한 방법으로서 microwave를 이용할 수 있을 지의 여부와 인삼을 가공제품으로 만들기 전에 microwave를 이용하여 잔류농약 성분을 신속히 추출하여 제거시킬 수 있는지 알고자 하였다. 인삼분말 시료에 hexane을 추출용매로 이용한 microwave 추출의 최적 조건은 power 150 watts, 추출시간 2분이었고 그 추출 효율은 Soxhlet으로 7시간 동안 가열 환류 추출한 결과를 지수 100으로 하였을 때 quintozene 100, tolclofos-methyl 92, procymidone 100으로 거의 동일한 수준으로 나타났다. 그리고 microwave 추출법을 사용함으로써 실제 Soxhlet 추출법에서 사용된 용매양의 최소 7배 이상 감소시킬 수 있었고 추출 시간 또한 7시간에서 2분으로 훨씬 단축되었다. 인삼 엑기스 제조 전 잔류농약 성분의 제거 실험에 있어서 45%나 60% ethyl alcohol을 용매로 사용하고 microwave로 power 150 watts 추출시간 2분 이내로 1회 추출하여 quintozene 100%, tolclofos-methyl 69%, procymidone 83%정도의 제거효과를 얻었다.

• 펄프종이기술
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• 제44권6호
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• pp.50-57
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• 2012

In this study, the beeswax extraction methods using organic solvents were examined to develop a optimal dewaxing technology for beeswax-treated Hanji. Thermally-aged beeswax-treated Hanji was dewaxed using four types of extraction methods including dipping, Soxhlet extraction, ultrasonic washing and shaking methods. Then, the aging stability of the dewaxed Hanji was evaluated in terms of variations in paper strength and in the color of the printed area with muk. The experimental results suggested that the dewaxing methods allowing solvent to flow during extraction showed superior extraction efficiency. The dipping method in which the organic solvent does not flow showed the slowest extraction rate of beeswax compared to three other methods. In terms of variations in tensile strength and folding endurance, however, no obvious differences in the aging stability were observed amongst these four extraction methods. Regarding the aging stability in terms of the color of the printed area with muk, Soxhlet extraction method showed the best performance of dewaxing.

• 상하수도학회지
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• 제26권1호
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• pp.115-121
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• 2012

This study was performed to assess the possibility of application of sewage sludge which is the side-product from domestic sewage treatment plant to the materials for biodiesels by investigating the yields and composition of the lipids and fatty acid methyl esters(FAMEs) from soxhlet extraction and in-situ transesterification. As the results, yields of in-situ transesterification were higher than soxhlet extraction. In comparison by sewage sludge type, yields of sewage sludge mixed nightsoil or livestock were higher than a single sewage sludge. And maximum yield showed up to 14 wt%. Fatty acid composition of extracted lipids and synthesized FAMEs consists of palmitic acid(C16:0), palmitoleic acid(C16:1), stearic acid(C18:0), oleic acid(C18:1), and linoleic acid(C18:2).

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 춘계학술발표대회
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• pp.493-496
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• 2000

The extraction efficiencies of panaxynol and panaxydol according to extraction temperature were the highest at $80^{cdot}C$ among 65, 80, $95^{cdot}C$ with soxhlet and increased with shaking method when temperature increased from $25^{cdot}C$ to $45^{cdot}C$. The amounts of panaxynol and panaxydol were determined by gas chromatography. In time dependence of extracted amounts of panaxynol and panaxydol using shaking method, the efficiencies of panaxynol and panaxydol were increased during 12 hour. The effect of water swelling on panaxynol and panaxydol extraction efficiency using soxhlet and shaking methods, the efficiencies of panaxynol and panaxydol were decreased as swelling time was increased.

• 한국대기환경학회지
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• 제16권6호
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• pp.595-606
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• 2000

In order to compare analytical conditions for measuring PAHs(polycyclic aromatic hydrocarbons) in ambient air, a series of experiment were conducted using three different types of extraction methods that include:(1) accelerated solvent extraction (ASE), (2) soxhlet, and (3) sonification methods. Efficiency and relevant analytixal parameters for each of these methods were examined on five different types of solvents that include:(1) 10% diethyl ether in n-hexane(v/v), (2) dichloromethane, (3)cyclohexane.(4) toluene, and (5) Benzene: ethanol (4:1). Comparison of extraction efficiency for various combinations between methods and solvents was made through an application of both internal and external standard calibration techniques. The extraction efficiency tests, when checked using both internal and external standards, allowed us to derive meaningful comparison among different techniques and among solvents.

• 한국식품저장유통학회:학술대회논문집
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• 한국식품저장유통학회 2003년도 제23차 추계총회 및 국제학술심포지움
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• pp.141.2-141
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• 2003

고도불포화지방산 중 EPA(eicosapentaenoic acid)와 DHA(docosahexaenoic acid)는 여러 가지 생리활성 효과를 나타내는 것으로 알려져 있으며, 최근 관심이 주목되고 있다. 본 실험에서는 특히 DHA의 함량이 높은 해양미생물, 즉 조류(microalgae)인 Schizochytrium sp.에서 얻어진 DHA powder로부터 두 가지 방법으로 유지를 추출한 뒤 그 성질을 비교.분석하였다. 먼저, 8$0^{\circ}C$, soxhlet extractor로부터 6시간 동안 추출하고, 55$^{\circ}C$, shaking water bath로부터 같은 시간 동안 추출한 결과, 각각 25.5, 24.0%의 수율을 나타내었다. GC에 의한 지방산 조성 분석 결과, soxhlet extractor에서 추출한 경우, palmitic acid, DHA가 각각 30.98, 30.04 mol%로 주요 지방산인 것으로 나타났으며, shaking water bath에서 추출된 유지는 그 함량이 각각 31.44, 34.78 mol%를 나타내었다. 또한 pancreatic lipase에 의한 가수분해를 통해 sn-2 위치의 지방산 조성 분석 결과, DHA가 sn-2 위치에 주로 함유되어있는 것으로 조사되었다. 한편, HPLC-ELSD system을 이용하여 중성지방의 구성 성분을 분석 결과, 유지의 99%이상이 TAG(triacylglycerol) 형태로 이루어져 있었으며, 소량의 MAG(monoacylglycerol) 존재를 확인할 수 있었다.

• Korean Chemical Engineering Research
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• 제57권2호
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• pp.301-304
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• 2019

Microwave was designed for lipid extraction from green algae (Spirulina platensis). Microalgae-solvent (various solvents) were extracted and heated using microwave at 600 W for around 40 min. The maximum yield obtained within this period was 12.530% of lipid compared to just 1.293% for Soxhlet extraction. Lipid analysis revealed that those with higher essential fatty acid content consist of saturated fatty acid (SAFA) and polyunsaturated fatty acid (PUFA) which could be used for biodiesel production.

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2006년도 학술논문요약집
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• pp.99-100
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• 2006

• Near Infrared Analysis
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• 제2권1호
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• pp.37-42
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• 2001

Near infrared spectroscopy (NIRS) was applied to determination of the lipid content of the compost during the compost fermentation of tofu (soybean0curd) refuse. The absorption of lipid observed at 5 wavelengths, 1208, 1712, 1772, 2312 and 2352 nm on the second derivative spectra. To formulated a calibration equation, a multiple linear regression analysis was carried out between the near-infrared spectral data and on the lipid content in the calibration sample set (sample number, n=60) obtained using Soxhlet extraction method. The value of the multiple correlation coefficient (R) was 0.975 when using the wavelengths of 1208 and 1712 nm were used in the calibration equation. To validate the calibration equation obtained, the lipid content in the validation sample set (n=35) not used for formulating the calibration equation was calculated using the calibration equation, and compared with the value obtained using the Soxhlet extraction method. Good agreement was observed between the results of the Soxhlet extraction method and those values of the NIRS method. The simple correlation coefficient (r) and standard error of prediction (SEP) were 0.964 and 0.815 %, respectively. suitability of the lipid content as an indicator of the compost fermentation of tofu refuse was also studied. The decrease of the lipid content in the compost corresponded to the decrease of the total dry weight of the compost in the composter. The lipid content was a significant indicator of the compost fermentation. The NIRS method was applied to measure the time course of the lipid content in the compost fermentation and good results were obtained. The study indicates that NIRS is a useful method for process management of the compost fermentation of tofu refuse.