• 제목/요약/키워드: brine

검색결과 441건 처리시간 0.025초

Brine Shrimp Bioassay를 이용한 수종생약의 생리 활성 검색 (Screening of Biological Activity of Crude Drugs Using Brine Shrimp Bioassay)

  • 이지숙;김진웅
    • 생약학회지
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    • 제21권1호
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    • pp.100-102
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    • 1990
  • Brine shrimp bioassay has been frequently utilized as a basic screening method for detecting a broad range of bioactive compounds from natural products. Each methanol, chloroform, and water extract of thirty-eight crude drugs were screened in the brine shrimp bioassay, and a number of crude drugs exhibited toxicity against brine shrimp nauplii.

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김치용 배추 절임 염수의 재사용 가능성 평가 (Evaluation of Brine Recycling on Salting of Chinese Cabbage for Kimchi Preparation)

  • 신동화;홍재식;오진아;안용선
    • 한국식품위생안전성학회지
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    • 제15권1호
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    • pp.25-29
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    • 2000
  • 김치 공장에서 배추 절임시 사용하는 염수의 재사용 가능성을 확인하기 위하여 염지 후 배출되는 염수의 염농도를 재조정하여 6회까지 재 사용하면서 염수의 성분과 미생물 변화 및 매회 절임 배추로 담근 김치의 품질을 평가하였다. 배추 절임 후 염수의 염 농도는 1.35~2.49%감소하였고 재 사용횟수에 따라 절임 후 염수의 pH는 4회까지 유의적 변화를 보였고 절임 전 염수의 pH는 4회 까지는 통계적 유의차가 없었으며 산도도 절임 횟수에 따라 증가하는 경향을 보였다. 염수 중 미생물수는 1회 사용시 1.58$\times$10에서 4회 사용시 2.25$\times$$10^{7}$ 으로 최고에 달하여 10배정도 상승하였다. 염수 중 염을 제외한 순 가용성 고형분은 6회 사용시 0.93%로 미미하게 증가하는 경향이었고 비타민 C함량은 6회사용 후 0.55 mg%로 재사용 횟수에 따라 상승하는 경향을 보였다. 6회까지 염수를 재 사용하여 절임한 배추로 담근 김치의 pH와 산도, 그리고 관능적 품질은 유의적 차이를 보이지 않아 염수의 재 사용가능성을 확인하였다.

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Pickle 제조과정, $H_2O_2$, 저장기간에 따른 refrigerated dill pickle과 brine중의 lipoxygenase, peroxidase, catalase 활성의 변화 (Effects of Dill Pickling Process, $H_2O_2$ and Storage Duration on Lipoxygenase, Peroxidase and Catalase Activities in Cucumber and Brine)

  • 장미진;조일영;이시경
    • Applied Biological Chemistry
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    • 제39권3호
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    • pp.222-226
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    • 1996
  • 제조과정, 과산화물 및 저장기간에 따른 냉장 Dill 피클과 brine에 함유된 lipoxygenase, peroxidase, catalase 효소의 활성 변화를 조사하였다. 오이를 Dill 피클용 brine에 1일 저장시의 lipoxygenase는 거의 비활성화 되었으나, 1일 이후에는 lipoxygenase의 활성은 서서히 감소하였다. 반면, 오이 tissue에 존재하는 peroxidase의 활성은 피클 제조후 4일 저장기간 동안 서서히 감소 현상을 나타내었다. 신선한 오이 tissue에서 추출된 catalase는 높은 활성을 가지나, 오이를 피클용 brine에 담갔을 경우에는 소량의 catalase 활성만 보였다. Brine에 과산화물을 첨가시, tissue에서 추출된 lipoxygenase, peroxidase, catalase 활성은 저장 기간과 과산화물 농도에 따라 지속적인 감소를 보였다.

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계절별 배추 절임염수의 특성변화 (Changes of Brine Characteristics during the Salting Process of Winter, Spring, and Summer Chinese Cabbage)

  • 윤혜현;김동만
    • 한국식품영양과학회지
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    • 제29권1호
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    • pp.26-29
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    • 2000
  • Major characteristics of brines produced from the salting process were compared among winter, spring, and summer (highland) Chinese cabbages. The soluble-solids contents of final brine were decreased to 87~90% of initial brine during salting process, and showed 16.3, 15.8, and 14.4$^{\circ}$Brix for winter, spring, and highland Chinese cabbages, respectively. The pHs showed similar changes during salting process from pH 8.40~8.63 for initial to pH 6.03~6.24 for final. The high salting(12.4~14%) of final brine needs dilution or reuse treatemnt before discard. The COD of final brine were increased to 39.6 ppm, 52.1 ppm, 37.7 ppm, respectively. During salting total microbial counts of final brine were increased ten times from those of the initial brines for all samples.

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수종생약의 Brine Shrimp 독성에 관한 연구(I) (Studies on the Brine Shrimp Toxicity of Crude Drugs (I))

  • 김윤철;김정희
    • 생약학회지
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    • 제24권3호
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    • pp.263-265
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    • 1993
  • Brine shrimp toxicity of water extracts of twenty three crude drugs was tested by the brine shrimp bioassay. Eight crude drugs were shown to have 100% mortality in $1000{\;}{\mu}g/ml$. They were fractionated by Amberlite XAD-2 column chromatography and were tested by the brine shrimp bioassay. Methanol fraction of Rhei Rhizoma $(LC_{50}=49.60{\;}{\mu}g/ml)$ and Cantharis $(LC_{50}=54.08{\;}{\mu}g/ml)$ were shown to have potent brine shrimp toxicity in this test.

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Effects of Water or Brine Immersion Thawing Combined with Ultrasound on Quality Attributes of Frozen Pork Loin

  • Hong, Geun-Pyo;Chun, Ji-Yeon;Jo, Yeon-Ji;Choi, Mi-Jung
    • 한국축산식품학회지
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    • 제34권1호
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    • pp.115-121
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    • 2014
  • This study explored the effects of water or brine (2% NaCl, w/v) immersion thawing combined with ultrasound treatment (40 kHz, 150 W) on the quality characteristics of pork. Ultrasound treatment of pork was conducted in two cold media (at $4^{\circ}C$), water and 2% (w/v) brine, respectively. Because the ultrasound treatment caused temperature increase in the media from $4^{\circ}C$ to $16^{\circ}C$, the qualities of pork thawed by ultrasound were compared with those thawed by immersion either in water or brine where the temperature was being maintained at either $4^{\circ}C$ (low temperature control) or $17^{\circ}C$ (high temperature control). The ultrasound treatment resulted in rapid thawing of pork where the thawing rate was similar to those thawed in the $17^{\circ}C$ media. For quality characteristics, ultrasound-treated pork in brine had an advantage of less cooking losses when comparing to the control. In particular, ultrasound treatment in brine exhibited the lowest shear force (or highest tenderness) among the freezing/thawing treatments. Although the ultrasound processing in brine caused discoloration of the pork, this thawing technique had potential to be applied as a commercial thawing technology for frozen foods.

Waste Isolation Pilot Plant Performance Assessment: Radionuclide Release Sensitivity to Diminished Brine and Gas Flows to/from Transuranic Waste Disposal Areas

  • Day, Brad A.;Camphouse, R.C.;Zeitler, Todd R.
    • Nuclear Engineering and Technology
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    • 제49권2호
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    • pp.450-457
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    • 2017
  • Waste Isolation Pilot Plant repository releases are evaluated through the application of modified parameters to simulate accelerated creep closure, include capillary pressure effects on relative permeability, and increase brine and gas saturation in the operations and experimental (OPS/EXP) areas. The modifications to the repository model result in increased pressures and decreased brine saturations in waste areas and increased pressures and brine saturations in the OPS/EXP areas. Brine flows up the borehole during a hypothetical drilling intrusion are nearly identical and brine flows up the shaft are decreased. The modified parameters essentially halt the flow of gas from the southern waste areas to the northern nonwaste areas, except as transported through the marker beds and anhydrite layers. The combination of slightly increased waste region pressures and very slightly decreased brine saturations result in a modest increase in spallings and no significant effect on direct brine releases, with total releases from the Culebra and cutting and caving releases unaffected. Overall, the effects on total high-probability mean releases from the repository are insignificant, with total low-probability mean releases minimally increased. It is concluded that the modified OPS/EXP area parameters have an insignificant effect on the prediction of total releases.

염수투하에 따른 염수괴 거동에 관한 연구 (A Study on the Behavior of Brine Lumps Caused by Dropping Brine)

  • 신문섭;;이종남
    • 한국해안해양공학회지
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    • 제3권1호
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    • pp.21-28
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    • 1991
  • 본 연구는 경사면에서 탁질혼입에 의한 탁수괴 거동을 밀도차가 적은 염수를 이용하여 실험과 이론을 통하여 알아보았다. 염수괴의 형상특성, 길이 변화, 높이 변화, 이동속도 변화를 알아보았다. 그리고 염수괴의 거동을 Baines and Hofinger(1984)의 난류 Thermal 이론과 비교하여 보았다. 그 결과 실험치와 이론치는 거의 일치하고 있었다. 따라서 밀도차에 의한 탁수괴의 거동특성은 난류 Thermal 이론으로 재현할 수 있다는 것을 알았다.

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함수의 천일증발촉진성 색소에 관한 시험 (Study on the dyestuff for acceration solar evaporation)

  • 장판섭
    • 약학회지
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    • 제3권1호
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    • pp.26-34
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    • 1957
  • The solar evaporation method is one of the most important and popular salt manufecturing method in Korea. The rate of evaporation of sea water depends on a complex climate factors. Of these factors, the most important is solar radiation and in particular the extent to which it is absorbed in the brine. By the addition of suitable dyestuff, a further increase in absorption is obtained and can result in all the radiation entering the brine being made available as heat. "Solivap Green", one of several dyestuffs which have been suggested for accelerating solar evaporation, was tested in this experiment. The results of the experiment. 1. Increase the evaporation rate of brine up to 20-25%. 2. Elevate the temperature of brine 2-$4^{\circ}C$. higher than that of brine adding no dyestuff. 3. Optimum dyestuff concentration is 25-30 mg/L and allowable maximum concentration can not exceeded 1000 mg/$m^2$ (50 mg/L). 4. Addition of dyestuff does not cause the degradation of salt produced. 5. A conversion table which indicates the concentrations for various depths of brine was prepared for engineering purpose. 6. Absorption spectrum of the dyestuff was studies, but toxicological and structural studies for the dyestuff have not been done in this experiment.

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LNG 저장탱크용 Brine Heating System의 최적온도 설정 (The Optimum Temperature of Brine Heating System for LNG Storage Tank)

  • 오병택;홍성호;양영명
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2001년도 추계학술대회논문집A
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    • pp.361-366
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    • 2001
  • The purpose of installation of the brine heating system for LNG storage tank is the prevention of ground freezing. If the ground of LNG tank areas is frozen, it is caused by safety problems. The design of brine heating system for LNG storage tank which is constructing in our country is not well considered about domestic weather conditions and economical efficiency. Therefore, this paper reports on the study of the optimized temperature of inside pipes and cooling process through the transient analysis by using the existing brine heating system.

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