• 분석과학
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• 제9권4호
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• pp.331-335
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• 1996

국내산 녹차나무꽃의 향기성분을 기체 크로마토그래피 및 질량분석법으로 분석하였다. 시료 중 56종의 화합물이 분리확인되었으며, hydrocarbon류 22종, alcohol류 14종, aldehyde류 6종, ester류 5종, 기타 9종이었다. Heneicosyl formate와 ${\alpha}$-phenyl ethyl alcohol, acetophenone 등이 많이 포함되어 있었고, sesquiterpene 성분인 germacrene D도 확인되었다.

• Journal of the Korean Wood Science and Technology
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• 제26권3호
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• pp.100-107
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• 1998

Methanol extracts of five Berberidaceae species were examined against tissue factor inhibitory and tumour cell growth inhibitory activity. Methanol extracts of Berberis koreana Palibin showed a strong cytotoxicity activity against SK-MEL-2 (Melanoma) tumour cell lines with more than 90% in $25{\mu}g/m\ell$ and against A549 (Lung carcinoma), SK-OV-3 (Ovarian cancer), XF498 (CNS cancer) and HCTl5 (Colon cancer), other Berberidaceae species except B. koreana species have no effect on the tumour cells. Biologically active compound, therefore, was isolated through the activity guided fractionation and purification. The structure was confirmed by NMR. FT-IR and MS to 2-(3,4-dihydroxybenzyl)-ethyl alcohol. It showed cytotoxicity activity against SNU-C4 tumour cell lines with 50.7% in $50{\mu}g/m\ell$. Methanol extracts of 5 Berberidacae species have no effect on the tissue factor inhibitory activity.

• Journal of Pharmaceutical Investigation
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• 제14권4호
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• pp.178-182
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• 1984

Extract of drugs in commerce was administered to mice for 3 days and 7 days and its antifatigue effects were compared with those of P. ginseng extract and A. sessiliflorum extract. Mice were used for these experiments divided into ethyl alcohol and water extract of R. glutinosa(saengjihwang), R. glutinosa (sookjihwang), A. japonica(changchool), A. japonica(baekchool), P. officinale, C. japonica, C. morifolium, A. calamus were given ordinary dose rally. For antifatigue test, swimming performance were determined after the extract administration. The group of P. officinale gave high improvement of the swimming performance in ethyl alcohol extract group.

• Journal of Pharmaceutical Investigation
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• 제14권4호
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• pp.195-199
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• 1984

Extract of drugs in commerce was administered to mice for 3 days and its fatigue effects were compared with those of P. ginseng extract and A. sessiliflorum extract. Mice were used for these experiments divided into ethyl alcohol and water extract of P. cocos, S. japonica, P. multiflorum, L. chinense, A. cochinchinensis, S. indicum, N. nucifera were given ordinary dose orally. For antifatigue test, swimming performance were determined after administration of the extract The group of P. cocos gave high improvement of the swimming performance in ethyl alcohol extract group. And the group of S. japonica an improvement was also observed in water extract group.

• The Korean Journal of Pain
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• 제6권2호
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• pp.247-250
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• 1993

Trigeminal neuralgia(tic douloureux) is a condition characterized by excruciating paroxysms of pain in lips, gums, cheek or chin. There are many treatments of trigeminal neuralgia, such as carbamazepine, electrical stimulation, radiation therapy and ablative procedures. We blocked the mandibular nerve via lateral extra-oral route with pure ethyl alcohol in patient with localized gingival pain. The results were as follows; 1) The mandibular nerve block with pure ethyl alcohol was effective. 2) No complications were noted.

• 펄프종이기술
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• 제37권5호통권113호
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• pp.56-62
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• 2005

The catalytic effect of molybdovandophosphate heteropolyanion (HPAs) on the delignification of kraft bagasse pulp by hydrogen peroxide has been investigated. Very small amounts of the catalyst (0.05 0.3 mM/l) gave convenient results. Partial reduction of the catalyst was also studied. The effect of reaction medium (water, ethyl alcohol and acetone) on the bleaching was also studied. The results obtained show that the optimum condition for bleaching in presence of polyoxometalate were 0.05 mM/l catalyst concentration at $70^{\circ}C$ reaction temperature and $7\%$ consistency at pH 2 in aqueous medium. The ratio of water to solvent of 60:40 from acetone gives higher brightness than ethyl alcohol. The catalyst solution can be reused for 5 times without any reduction in brightness. ESR for the blank and exhausted solutions under different conditions was also carried out to find the relation between reduced metals and pulp brightness.

• 분석과학
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• 제15권1호
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• pp.26-30
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• 2002

한국 고유의 전통주 및 일반 알코올 음료에 대한 ethyl carbamate 의 함량을 알아보기 위하여 국내에서 시판되고 있는 술을 dichloromethane 용매로 추출한 후 GC/MS-SIM방법에 의해 분석하였다 분석결과 ethyl carbamate는 한국고유의 전통주에 $4.6-50.2{\mu}g/L$ 비 증류주에 $27.8-45.4{\mu}g/L$ 위스키에는 $24.8-55.1{\mu}g/L$ 함유되어 있음을 알 수 있었다. 회수율은 83.3-104.8 %의 값을 얻었고, 상대표준편차는 1.8-14.81% 검출한계는 $0.3{\mu}g/L$이었다.

• 한국작물학회지
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• 제52권3호
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• pp.303-310
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• 2007

고구마 용도 다양화와 지상부의 채소적 가치를 구명키 위하여, 괴근에서 자라난 싹 중 부드러운 잎과 잎자루를 포함한 줄기끝 10 cm의 끝순을 수확하여, 끝순 추출물의 페놀화합물 함량, 식중독균인 Listeria monocytogenes, Salmonella Typhimurium에 대한 항균 활성, 식품안전성과 관련된 돌연변이원성 및 항돌연변이원성 등을 조사한 결과는 다음과 같다. 1. 고구마 끝순에는 6종의 페놀화합물이 함유되어 있었으며, 그 중 chlorogenic acid와 caffeic acid의 함량이 총페놀함량의 $89{\sim}93%$로 대부분을 차지하였다. 또한 용매분획별 페놀화합물 함량은 ethyl acetate 및 buthyl alcohol 추출물이 다른 용매추출물에 비하여 월등히 높았다. 2. 고구마 끝순의 80% ethanol 조추출물의 수율은 12.5 g이었고, 용매분획별로는 water 분획물이 8.9 g으로 가장 많았으며, 다음은 chloroform 분획물이 1.6 g이었고, 나머지 용매 분획물은 $0.7{\sim}1.1g$의 수율을 나타내었다. 3. 고구마 끝순에는 6종의 페놀화합물이 함유되어 있었으며, 그 중 chlorogenic acid와 caffeic acid의 함량이 총페놀 함량의 $89{\sim}93%$로 대부분을 차지하였다. 또한 용매분획별 페놀화합물 함량은 ethyl acetate 및 buthyl alcohol 추출물이 다른 용매추출물에 비하여 월등히 높았다. 4. Listeria monocytogenes에 ethyl acetate 및 buthyl alcohol 추출물을 첨가한 결과 16시간까지는 3 log 이상 균의 성장을 억제하였으며 특히 20 mg/ml butanol 추출물은 균의 성장을 억제시키다 12시간 이후에는 완전히 균을 사멸시키는 것으로 나타났다. Salmonella Typhimurium에 대해서도 고구마 끝순 추출물은 $0.5{\sim}1$ log 정도의 감소를 나타내었다. 5. 고구마 끝숱 추출물의 Salmonella Typhimurium TA98 및 TA100에 대한 돌연변이 활성을 조사한 결과 TA98은 $29{\sim}33$ CFU/plate이었고, TA100은 $159{\sim}188$ CFU/plate로 돌연변이 활성이 없었다. 6. 직접 돌연변이원 물질인 2-NF와 MMS를 처리하여 복귀돌연변이수를 측정한 결과 ethyl acetate 및 buthyl alcohol에서 돌연변이로 인한 복귀변이원성 집락수가 낮게 나타남으로써 고구마 끝순 추출물이 항돌연변이 활성이 있는 것으로 나타났다.

• 한국환경보건학회지
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• 제23권3호
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• pp.40-49
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• 1997

In Korea, naked barley and tapioca are main raw materials for the production of fermentation ethyl alcohol, and one million drums bf 95% fermentation ethyl alcohol is produced per year by use of them. Stillage of alcoholic fermentation is mostly digested by methane fermentation process, and methane gas occured if methane fermentation process is recovered and mixed with fuel to decrease 25-30% for total fuel used in factories. In the anaerobic digestion process of naked barley stillage, supplement of nutrients is necessary to slove the problems caused by inhibitory materials contained if stillage and deficiency of nutrients. Therefore, the objective of this study was to examine why the anaerobic digesters using the naked barley distillery wastewater have shown the poor digestability frequently and how to control it. As the poor digestion was supposed to be occurred by the lack of iron as trace nutrient, the experiments were carried out to find out the optimum dosage and the way of addition of iron and to assess the quantitative evaluation of the type of iron in digesters. Initially, bottle test as batch digesters and lab-scaled continuous flow digesters were used in order to determine the digestion characteristics with tapioca and naked barley distillery wastewater. According to the results of batch tests, the poor digestion was caused by volatile fatty acids and could be improved by adding of calcium. The activity of the methanogenic bacteria were increased remarkably when the iron was added to the digester in the form of mixture with substrates.

• Journal of Microbiology and Biotechnology
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• 제5권5호
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• pp.274-279
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• 1995

Ethyl caproate, one of the major flavor compounds deciding the quality of sake (Japanese wine), is produced during the brewing by the action of alcohol acyltransferase and esterases of sake yeast and koji mold. Extracellular esterases of Aspergillus oryzae required for ethyl caproate synthesis were purified partially. The enzymes had different optimum pH and affinity toward substrates. Substrate preferences and inhibition features showed the three enzymes to be B-type esterases or carboxylesterases (EC 3.1.1.1).