• 제목/요약/키워드: SA/CA

검색결과 164건 처리시간 0.027초

추출조건(抽出條件)에 따른 인삼(人蔘)엑기스의 무기성분정량(無機成分定量)에 관(關)한 연구(硏究) (Approach to the Extraction Method on Minerals of Ginseng Extract)

  • 조한옥;이중화;조성환;최영희
    • 한국식품과학회지
    • /
    • 제8권2호
    • /
    • pp.95-106
    • /
    • 1976
  • 인삼중에는 약리학적면에서 뿐 아니라 생화학적 및 영양학적면에서 중요한 역할을 하는 무기질 및 미량원소가 다양하게 함유되어 있어서 생체를 구성하거나 각 조직의 기능을 촉진시키는 생물학적 활성물질로서의 역할을 하고 있다. 본 실험에서는 인삼 무기질의 효율적 이용을 목적으로 추출조건에 따른 엑기스의 수량과 추출된 인삼 엑기스의 무기질 및 미량원소를 미색법 및 원자흡광 분석법으로 측정하여 다음과 같은 결과를 얻었다. 1. 가장 효율적인 추출방법은 인삼원료량의 $10{\sim}20$배 되는 $60{\sim}80%$ ethanol로 60시간 이상 연속추출하는 것으로서 그 수량은 60% ethanol의 경우가 16.5%, 80%의 경우가 13.5%로서 가장 높은 값을 보였다. 2. 6년근 수삼과 백삼및 미삼의 수분함량은 각각 66.37%, 12.61%, 12.20%였으며 회분은 1.56%, 3.52%, 6.04%였고, 가용성 무질소물은 20.75%, 61.00%, 45.00%였으며 조단백질은 6.30%, 13.69%, 12.69%였고 순단백질은 2.26%, 5.94%, 5.76%였으며 조지방은 1.11%, 2.02%, 2.50%였고 조섬유는 2.41%, 8.74%, 8.87%였다. 3. 무기질 및 미량원소를 분석한 결과는 다음과 같다. 1) P함량은 미삼, 백삼, 수삼이 각각 1.318%, 1.362%, 0.713%였고 인삼엑기스의 그것은 미삼, 백삼, 수삼이 각각 0.038%, 0.063%, 0.036%로서 비교적 낮은추출율을 보이고 있다. 2) Ca함량은 미삼, 백삼, 수삼이 각각 0.147%, .238%, 0.126%이고 그 엑기스는 미삼, 백삼, 수삼이 0.023%, 0.011%, 0.016%여서 미삼은 15.6%이상이 ethanol로 추출된데 비해 백삼은 4.6%로 추출율이 극히 낮았다. 3) CI함량은 미삼 0.11%, 백삼 0.07%, 수삼 0.09%로 시료간에는 뚜렷한 함량차가 없었으며 미삼은 그 함량의 36.4%가 백삼은 67.1%가 ethanol로 추출된데 반하여 수삼은 84.4%로 가장 높은 추출수율을 보였다. 4) Fe함량은 미삼이 125.0ppm으로 가장 많고 백삼은 32.5ppm, 수삼은 20.0ppm이었는데 그 추출수율은 극히 낮아서 미삼은 1.33%, 백삼은 0.83%, 수삼은 1.08%에 불과하였다. 5) Cu, Zn 및 Mn은 미량원소로서 이중 Mn은 미삼 62.5ppm, 백삼 25.0ppm, 수삼 5.0ppm으로 비교적 많은 양이 함유되었으나 ethanol로 추출한 엑기스에서는 정량되지 않았으며 Cu는 미삼, 백삼, 수삼이 각각 15.0ppm, 20.0ppm, 5.0ppm이고 인삼 엑기스에는 7.5ppm, 6.5ppm, 4.5ppm으로서 50%, 32.5%, 90%의 추출율을 보였다. Zn은 다른 작물체에 비하여 많은 양이 함유되었고 미삼이 47.5ppm, 백삼이 27.5ppm, 수삼이 5.5ppm이고 그 인삼 엑기스에는 각각 4.5ppm, 1.25ppm, 15.0ppm의 Zn이 함유되어 있었다.

  • PDF

금산사미륵전 외벽화 보존처리된 벽체의 분석 연구 (A Study on the Analysis of Outside Mural Paintings treated in Maitreya Hall of Geumsan-sa Buddhist Temple, Korea)

  • 한경순;이상진;이화수
    • 보존과학회지
    • /
    • 제26권4호
    • /
    • pp.445-458
    • /
    • 2010
  • 1993년에 해체 및 보존 처리된 금산사미륵전 벽화는 현재 박락과 균열, 박리와 같은 심각한 손상이 진행된 것으로 조사되었다. 금번 분석조사는 향후 진행될 금산사 미륵전 벽화 보존처리를 위하여 과거에 처리된 벽체의 재료적 특성을 파악하기위해 진행되었다. 손상이 가장 심한 남측 벽의 벽체를 대상으로 하였으며 시료는 남측 2층 외벽의 불벽과 포벽화의 마감벽, 중벽, 배면 보강부의에서 박락된 벽체시료를 채취하여 미세구조와 화학성분, 결정상, 그리고 입도분포를 중심으로 분석하였다. 분석결과, 불벽과 포벽의 마감벽은 유사한 풍화토를 사용하였고 중벽 또한 유사한 모래와 풍화토를 사용하였으며 비교적 균일한 크기와 모양의 광물 입자들의 집합체로 구성되어 있으나, 과거 보존처리 과정에서 벽체의 보강을 위해 사용한 아크릴 계열의 경화제의 영향으로 광물 입자들이 응집되어 매우 단단한 응결체 (aggregate)를 형성하고 있는 것으로 확인되었다. 벽체의 배면 1차 보강층과 배면 2차 보강층은 석고($CaSO_4{\cdot}2H_2O$)가 주 결정상인 것으로 분석되었으며, 모래와 점토광물이 소량 함유되어 있는 것으로 판단된다. 향후 보존처리는 부분적으로 경화된 벽체후면에 대한 조치와 1, 2차보강층의 제거가 우선적으로 진행되어야 한다.

Influence of Carbon and Nitrogen Sources in Solubilization of Hardly Soluble Mineral Phosphates by Penicillium Oxalicum CBPS-Tsa

  • Kim, Eun-Hee;Sundaram, Seshadri;Park, Myoung-Su;Shin, Wan-Sik;Sa, Tong-Min
    • 한국환경농학회지
    • /
    • 제22권3호
    • /
    • pp.197-202
    • /
    • 2003
  • Phosphorus is one of the major plant growth limiting nutrients, despite being abundant in soils in both inorganic and organic forms. Phosphobioinoculants in the form of microorganisms can help in increasing the availability of accumulated phosphates for plant growth by solubilization. Penicillium oxalicum CBPSTsa, isolated from paddy rhizosphere, was studied for its phosphate solubilization. The influence of various carbon sources like glucose, sucrose, mannitol and sorbitol and nitrogen sources like arginine, sodium nitrate, potassium nitrate, ammonium chloride and ammonium sulphate were evaluated using liquid media with tricalcium phosphate (Ca-P), ferric phosphate (Fe-P) and aluminium phosphate (Al-P). Maximum soluble phosphate of 824 mg/L was found in the amendment of sucrose-sodium nitrate from 5 g/L of Ca-P. Mannitol, sorbitol, and ariginine were poor in phosphate solubilization. While sucrose was better carbon source in solubilization of Ca-P and Al-P, glucose fared better in solubilization of Fe-P. Though all the nitrogen sources enhanced P solubilization, nitrates were better than ammonium In the amendments of ammonium chloride and ammonium sulphate, higher uptake of available phosphates by the fungus was found, and this resulted in depletion of available P in Fe-P amendment Phosphate solubilization was accompanied by acidification of the media, and the highest pH decrease was observed in glucose amendment Among the nitrogen sources, ammonium chloride favored greater pH decrease.

Effect of co-inoculation of Brevibacterium iodinum RS16 and Methylobacterium oryzae CBMB20 on the early growth of crop plants in Saemangeum reclaimed soil

  • Kim, Kiyoon;Kwak, Chaemin;Lee, Youngwook;Sa, Tongmin
    • 한국토양비료학회지
    • /
    • 제47권1호
    • /
    • pp.1-7
    • /
    • 2014
  • The objective of this study was to determine the effect of single and co-inoculation of plant growth promoting bacteria (PGPB) on early plant growth in Saemangeum reclaimed soil. Plant growth promoting Brevibacterium iodinum RS16 and Methylobacterium oryzae CBMB20 were inoculated on maize (Zea mays L.) and sorghum-sudangrass hybrid (Sorghum bicolor L.) grown in Saemangeum reclaimed soil. Single and co-inoculation of B. iodinum RS16 and M. oryzae CBMB20 increased plant height, dry biomass accumulation and macro-nutrient accumulation of maize and sorghum-sudangrass hybrid. M. oryzae CBMB20 treatment increased plant height in maize by 41.2% at 30 days after sowing (DAS), shoot dry weight and total dry weight compared to non-inoculated treatment. Macro-nutrient accumulation (N and P) in maize roots was significantly increased with co-inoculation treatment, K and Ca content was significantly increased at B. iodinum RS16 treatment compared to non-inoculated treatment. Macro-nutrient accumulation (P, K, Ca and Mg) in shoot was higher with M. oryzae CBMB20 treatment compared to non-inoculated treatment. In case of sorghum-sudangrass hybrid, co-inoculation treatment showed 33.7% increase in plant height compared to non-inoculated treatment at 30 DAS. M. oryzae CBMB20 treatment increased root dry weight and total dry weight, macro-nutrient accumulation in roots and N, Ca and Mg accumulation in shoot compared to non-inoculated treatment. P and K accumulation in shoot was significantly increased at co-inoculation treatment compared to non-inoculated treatment. This pot culture experiment demonstrated that single and co-inoculation of B. iodinum RS16 and M. oryzae CBMB20 increased the early growth and nutrient accumulation of maize and sorghum-sudangrass hybrid.

Characterization of Three Antifungal Calcite-Forming Bacteria, Arthrobacter nicotianae KNUC2100, Bacillus thuringiensis KNUC2103, and Stenotrophomonas maltophilia KNUC2106, Derived from the Korean Islands, Dokdo and Their Application on Mortar

  • Park, Jong-Myong;Park, Sung-Jin;Ghim, Sa-Youl
    • Journal of Microbiology and Biotechnology
    • /
    • 제23권9호
    • /
    • pp.1269-1278
    • /
    • 2013
  • Crack remediation on the surface of cement mortar using microbiological calcium carbonate ($CaCO_3$) precipitation (MICP) has been investigated as a microbial sealing agent on construction materials. However, MICP research has never acknowledged the antifungal properties of calcite-forming bacteria (CFB). Since fungal colonization on concrete surfaces can trigger biodeterioration processes, fungi on concrete buildings have to be prevented. Therefore, to develop a microbial sealing agent that has antifungal properties to remediate cement cracks without deteriorative fungal colonization, we introduced an antifungal CFB isolated from oceanic islands (Dokdo islands, territory of South Korea, located at the edge of the East Sea in Korea.). The isolation of CFB was done using B4 or urea-$CaCl_2$ media. Furthermore, antifungal assays were done using the pairing culture and disk diffusion methods. Five isolated CFB showed $CaCO_3$ precipitation and antifungal activities against deteriorative fungal strains. Subsequently, five candidate bacteria were identified using 16S rDNA sequence analysis. Crack remediation, fungi growth inhibition, and water permeability reduction of antifungal CFB-treated cement surfaces were tested. All antifungal CFB showed crack remediation abilities, but only three strains (KNUC2100, 2103, and 2106) reduced the water permeability. Furthermore, these three strains showed fungi growth inhibition. This paper is the first application research of CFB that have antifungal activity, for an eco-friendly improvement of construction materials.

상부전극에 따른 $(Sr_{0.85}Ca_{0.15})TiO_3$ 박막의 전기적 특성 (Electrical Properties of $(Sr_{0.85}Ca_{0.15})TiO_3$ Thin Films with Top Electrodes)

  • 조춘남;김진사;신철기;오재한;최운식;김충혁;이준웅
    • 대한전기학회논문지:전기물성ㆍ응용부문C
    • /
    • 제49권2호
    • /
    • pp.107-112
    • /
    • 2000
  • $(Sr_{0.85}Ca_{0.15})TiO_3$(SCT) thin films were deposited on Pt-coated $TiO_2/SiO_2/Si$ wafer by the rf sputtering method. Experiments were conducted to investigate the electrical properties of SCT thin films with various top electrodes. Various top electrodes as Pt, Al, Ag, Cu were deposited on SCT thin films by sputter and thermal evaporator. The characteristics of C-F and C-V of SCT thin films were not obviously varied with various top electrodes, SCT thin films annealed at $600^{\circ}C$ represents as favorable capacitance characteristics than SCT thin films not annealed, and Pt top electrode have the most high capacitance. The characteristic of I-V of SCT thin films showed that Pt top electrode revealed more less leakage current density than other electrodes, had a leakage current density below 10-8$[A/cm^2]$ until 25[V] applied voltage.

  • PDF

독도산 탄산칼슘형성세균에 의한 모르타르 균열보수와 압축강도 증진 (Application of Bacteria Isolated from Dok-do for Improving Compressive Strength and Crack Remediation of Cement-sand Mortar)

  • 박성진;이나영;김화중;김사열
    • 한국미생물·생명공학회지
    • /
    • 제38권2호
    • /
    • pp.216-221
    • /
    • 2010
  • 본 연구는 탄산칼슘형성세균을 이용하여 시멘트-모래 모르타르의 압축강도증진 및 균열보수의 응용에 연구의 목적이 있다. 독도로부터 분리한 7가지의 탄산칼슘형성세균을 16S rDNA 염기서열을 이용하여 동정했다. 고체배지상의 콜로니 주변부에 형성되는 광물결정을 확인했다. Urea-$CaCl_2$ 배지에서 형성되는 광물의 모양은 종 특이적인 것을 확인했다. Arthrobacter nicotinovorans KNUC601, Microbacterium resistens KNUC602, Agrobacterium tumefaciens KNUC603, Exiguobacterium acetylicum KNUC604, 및 Bacillus thuringiensis KNUC606균주는 인위적으로 만든 모르타르 균열부위를 메우는 것을 확인했다. Stenotrophomonas maltophilia KNUC605가 혼입된 시멘트-모래 모르타르는 음성대조구에 비해 14.7%정도 강도가 증가됐다.

사료분진의 폭발특성에 관한 연구 (A study of flour dust explosion)

  • 이홍주;우인성;홍현경;사민형;김윤선;황명환;황성민;박희철;이주엽
    • 대한안전경영과학회지
    • /
    • 제13권4호
    • /
    • pp.109-116
    • /
    • 2011
  • This study examined into property of flour dust explosion to get the basic data for safety of industry by protecting accident of dust explosion. The experiment was conducted to know the effect of distance between explodes in the experiment device, effect of flour dust concentration, effect of humidity, effect of explosion pressure to the dust concentration and effect of inactive substance additive. The study indicated that explosion was happened effectively at the optimum distance 100mm or less in inter-polar distance, and minimum ignition energy was measured at 6mm. The data of feed concentration to the probability of explosion showed that the smaller the particle diameter was, the larger probability of explosion was, and the higher the dust concentration was, the more increased the pressure of explosion was, but more than upper limit of dust concentration, then the explosion of pressure decreased. For the effect of humidity, the more it contained water, the more decreased the ignition energy of dust was, so increased minimum explosive concentration, and effective water content was minimum 10% or more. Inactive substance additive was effective in adding more than 15% CaCO3 and CaO as substance inhibiting dust explosion, in which CaCO3 was more effective than CaO. the analysis of the flame of dust explosion was performed by high-speed video camera, it showed the size of flame bacame smaller in order that sub feed, main feed, wheat powder. As a result, sub feed was expected to be less dangerous than others.

NH4-K 와 NH4-Ca 평형에 대한 양이온 치환식의 적용 (Application of Exchange Equations for NH4-K NH4-Ca Equilibria)

  • 정종배;사동민
    • 한국토양비료학회지
    • /
    • 제28권3호
    • /
    • pp.218-226
    • /
    • 1995
  • 복숭아 묘목으로 부터 채취한 근권 및 그 주변 토양을 이용하여 $NH_4-K$$NH_4-Ca$ 치환 현상을 조사하였으며 이 결과를 토양중 암모니움 등 양이온의 이동과 분포의 모델화에 적용할 수 있는 치환식을 찾고자 했다. 토양시료를 $NH_4Cl$, KCl과 $CaCl_2$ 용액으로 평형에 도달시킨 후 $Sr(NO_3)_2$ 용액으로 추출하여 평형상태에서의 치환태 양이온 조성을 구하였다. Vanselow, Gapon 그리고 kerr의 식은 $NH_4-K$$NH_4-Ca$ 치환 현상을 적절히 기술할 수 없었으나 치환태 양이온 농도에 임의의 지수를 갖는 다음과 같은 경험식이 매우 적절한 것으로 나타났다. ${\frac{\alpha_i^m}{a_j^n}}=K{\frac{(iX)^{mPi}}{(jX)^{nPj}}}$ 이 식에서 ${\alpha}i$${\alpha}j$는 원자가가 m과 n인 양이온 i 및 j의 용액 중 activity이며(iX)와 (jX)는 치환태양이온 i와 j의 농도이다. 치환태 양이온의 농도 단위로는 몰 분율 또는 당량 분율을 사용할 수 있다. 임의상수 $P_i$$P_j$ 그리고 분배상수 K는 이 식의 대수형을 이용하여 다중 회귀 방법으로 구할 수 있다.

  • PDF

RF 스퍼터링법에 의한 SCT 박막의 기판온도 영향 (Influence of Substrate Temperature of SCT Thin Film by RF Sputtering Method)

  • 김진사;오용철;조춘남;이동규;신철기;김충혁
    • 대한전기학회논문지:전기물성ㆍ응용부문C
    • /
    • 제53권10호
    • /
    • pp.505-509
    • /
    • 2004
  • The (Sr/sub 0.9/Ca/sub 0.1/)TiO₃(SCT) thin films are deposited on Pt-coated electrode(Pt/TiN/SiO₂/Si) using RF sputtering method at various substrate temperature. The optimum conditions of RF power and Ar/O₂ ratio were 140[W] and 80/20, respectively. Deposition rate of SCT thin film was about 18.75[Å/min]. The crystallinity of SCT thin films were increased with increase of substrate temperature in the temperature range of 100~500[℃]. The dielectric constant of SCT thin films were increased with the increase of substrate temperature, and changed almost linearly in temperature ranges of -80~+90[℃]. The current-voltage characteristics of SCT thin films showed the increasing leakage current as the substrate temperature increases.