• Title/Summary/Keyword: 일반독성

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The Effects of the Makgeolri on the Antioxidative Activity in the Endotoxin LPS-treated Rats (내독소인 LPS로 처치된 흰쥐에 대한 막걸리 항산화 활성효과)

  • Kwon, Ryun-Hee;Chae, Go-Yeon;Ho, Boe-Jin
    • Journal of Food Hygiene and Safety
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    • v.26 no.2
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    • pp.166-170
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    • 2011
  • Modem people have begun to have the nationwide interest in the rice wine called Makgeolri which is one of the traditional Korean alcoholic liquors. This study was performed to investigate the effects of San sung Makgeolri extract (SM) on antioxidation together with the determination of pH and dissolved oxygen (DO) in the progress of fermentation in the lipopolysaccharide(LPS)-treated rats. We examined the levels of SOD (superoxide dismutase), CAT (catalase), GPx (glutathione peroxidase) in liver homogenates and the histopathological observations in liver tissue. LPS-treated group markedly decreased the levels of SOD, CAT and GPx. But SM + LPS-treated group significantly increased the levels of them. Furthermore, the antioxidative effects of SM were supported by the histopathological observations in liver tissue which showed severe inflammation and necrosis in LPS-treated group, compared to the attenuated inflammation and necrosis in SM + LPS-treated group. This results suggested that SM could be a candidate of antioxidative material in spite of alcoholic liquors.

Antitumor Effect of Young Radish Kimchi Prepared with Young Radish Cultivated in the Soil Containing Sulfur on Sarcoma-180 Tumor Cells Transplanted Mice (유황처리 열무로 제조한 열무김치의 Sarcoma-180 암세포에 대한 고형암 성장 억제효과)

  • Kong, Chang-Suk;Bak, Soon-Sun;Rhee, Sook-Hee;Kil, Jeung-Ha;Rho, Chi-Woong;Hwang, Hae-Jun;Kim, Nak-Ku;Park, Kun-Young
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.34 no.10
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    • pp.1520-1524
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    • 2005
  • Young radishes (YR, yeolmu in Korean) were cultivated in the soil with and without sulfur. Young radish kimchi-general (YR kimchi-G) was prepared with YR commonly cultivated in the soil without sulfur. Young radish kimchl-sulfur (YR kimchi-S) and young radish kimchi-sulfur with lime mortar (YR kimchi-SL) were prepared with the YR cultivated in the soil with sulfur an4 sulfur added lime mortar on it respectively. Antitumor effects of methanol extracts from the YR kimchis were investigated in sarcoma-180 tumor cell transplanted mice. The solid tumor growth was significantly inhibited by the YR kimchi-SL prepared with YR grown in the soil with sulfur (p < 0.05). The treatment of the methanol extracts from YR kimchi-S and -SL increased the glutathione S-transferase activities and glutathione contents in the livers, compared to thlose of YR kimchi-G and the control. One of the antitumor effects by the YR kimchis was due to the increased the glutathione levels and the glutathione S-transferase activity which is phase 2 enzyme. These results also suggested that the antitumor effects of YR kimchi can be enhanced by using YR cultivated differently in the presence of sulfur that can help to produce sulfur-containing compounds in YR.

Preliminary semi-quantitative evaluation of developed latent fingerprints on non-porous surface with natural powders using a densitometric image analysis (비 다공성 표면에서 천연분말로 현출된 잠재지문의 농도계 이미지분석을 이용한 예비적인 반 정량적 평가)

  • Kim, Eun-Mi;Heo, Bo-Reum;Ok, Yun-Seok;Kim, Jin-Kyung;Joung, In-Nam;Choi, Sung-Woon
    • Analytical Science and Technology
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    • v.29 no.6
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    • pp.283-292
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    • 2016
  • Conventional fingerprint powders used during crime scene investigations pose potential health hazards. Thus, multiple natural replacement powders, including squid ink powder, indigo and rice powder were used to develop (visualize) latent fingerprints on non-porous surfaces (e.g., glass, plastic and tile). Fingerprints developed using the natural powders were compared using the Automatic Fingerprint Identification System (AFIS) with those developed with traditional black powder. The peak areas of ridges were also compared using densitometric image analyses. Collectively, objective and quantitative evaluation methods were developed. The effectiveness of natural powders varied depending on the surface but, in general, squid ink powder performed well on most surfaces. Indigo powder performed well on tile surfaces, while rice powder performed well on glass surfaces. Plastic was the most difficult surface from which to develop fingerprints. Image analysis using Field Emission Scanning Electron Microscopy (SEM) demonstrated the importance of the size and shape of natural powder particles to properly adhere to the ridges. Although densitometric image analyses did not correlate the number of minutiae and ridge peak areas, an unbiased, objective evaluation method would be possible using image analyses with a reference image. Additional experimentation will yield safe and cost-effective natural powders with which adequate fingerprint development can be performed.

Blocking the Acute Radiostrontium Transfer from Placenta In Fetus by Soluble Chitosan in Mice (수용성카이토산에 의한 마우스태반을 통한 태아로의 방사성스트론튬 급성 전이 억제)

  • Kim, Young-Ho;Bom, Hee-Seung;Kim, Ji-Yeul
    • Journal of Radiation Protection and Research
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    • v.22 no.4
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    • pp.237-250
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    • 1997
  • It has been reported that chitosan has little genetic toxicity as one of natural and nontoxic chelator and reduces the internal retention of radiostrontium in the mouse. This study is to examine that when water soluble chitosan is provided to the mouse on 17 days of pregnancy before and after radiostrontium contamination, how effectively it can inhibit an acute transfer of radiostrontium to fetus through placenta contaminated. Water soluble chitosan powder is mixed with general food for 60 days and 10%(Group 1) and 1%(Group 2) are provided respectively, and it is observed that the group with radiostrontium contamination on 17 days of pregnancy can inhibit more effectively the transfer of radiostrontium to fetus through placenta than control group with general food and the groups (Group 3, Group 4) with 10% and 1% of chitosan powder respectively after radiostrontium contamination (p<0.01, Table 1). It is found that when the pregnant mouse contaminated by radiostrontium on 17 days of pregnancy is prefed by chitosan, the transfer of radiostrontium to fetus through placenta can be inhibited.

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A Study on the Constituents of the Pollen of Pinus densiflora Siebol et Zuccarini and Pinus rigida Miller -Proximate Composition, Mineral, Heavy Metal, Vitamin and Free Sugar Contents- (적송화분과 리기다송화분의 성분 조성에 관한 연구 -일반성분, 무기질, 중금속, 비타민, 유리당의 함량-)

  • 김혜자
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.21 no.2
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    • pp.201-206
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    • 1992
  • Pinus pollen is used as the chief ingredient for Song-wha-dashik (Korea's traditional pattern-pressed candy). It has been the food stuff indispensable especially on the occasion of performing ancestral rites and holding a banquet since Shilla and Koryo Dynasty. In this paper, therefore, a new examination is made of the nutritive ingredients of the very Pinus pollen. Analysis has been made of the proximate composition, minerals, heavy metals, vitamins and free sugars of the Pollen of both Pinus densinora Siebol et Zuccarini and Pinus rigida Miller. In the proximate composition, Pinus rigida Miller is high except in free sugar ; crude ash (4.0%), crude protein (15.0%), crude fat (2.5%), crude fiber (17.5%). A lot of minerals have been found in both the samples. They contain Mg, Cl, Ca, Fe, Mn, Na, Zn, etc. In heavy metals, both the samples contain the same quantity of Cd(0.3 ppm) and the contents of Pb, Cu, and As are lower than the maximal limit permitted for food stuff. The contents of vitamin B$_1$, B$_2$, vitamin C are a little higher in Pinus rigida Miller : in vitamin E, on the contrary, Pinus densiflora Siebol et Zucarini (1.6 mg) doubles Pinus rigida Miller (0.8 mg). In free sugars, the results is as follows : 6.6%/6.9% in sucrose : 0.2% in fructose : 2.1% /2.9% in glucose respectively.

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Anti-oxidant, Anti-inflammation and Anti-microbial Effects of Hoangtonogak Plus Extracts (황토노각플러스 추출물의 항산화, 항염 및 항미생물 효능)

  • Cho, Jun-Hee;Lee, Ji-An
    • Journal of Convergence for Information Technology
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    • v.10 no.12
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    • pp.183-190
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    • 2020
  • This study evaluated the possibility of Hoangtonogak Plus extracts as a bioactive ingredients for cosmetic products. Methanol(MN) and hot-water(WN) extracts were analysed by DPPH/ABTS radical scavenging activity, FRAP value for anti-oxidant activity, MTT assay for cell viability, inhibition of NO production and iNOS protein expression for anti-inflammatory effect, paper disc diffusion method for anti-microbial activity against Staphylococcus aureus, Staphylococcus epidermidis and Escherichia coli.. The contents of total polyphenol of MN and WN extracts were 2.92±0.01 mgGAE/g and 1.67±0.02 mgGAE/g, respectively. DPPH, ABTS and FRAP values of MN extracts were higher than WN at each concentration. No significant cytotoxicity was observed in RAW264.7 cells. Furthermore, NO production of MN and WN at 1 mg/mL concentration was measured as 11.69 μM, 20.4 μM, respectively. In addition, MN extracts showed anti-microbial effect only on S. epidermidis. Also MN extracts suppressed iNOS protein level in a concentration-dependent manner. According to our results, the MN extracts demonstrated its potential as a natural source of antioxidant with anti-microbial and anti-inflammatory properties.

Assessment of Pollution Characteristics of Surface Sediments from Lake Andong(II): Studies on the Nutrient and Heavy Metal Release Characteristics from Sediments in Andong Dam (안동댐 퇴적물의 오염도 평가(II): 안동댐 퇴적물에 대한 영양염류 및 중금속 용출 특성 연구)

  • Kim, Young Hun;Park, Jae Chung;Shin, Tae Cheon;Kim, Jeong Jin
    • Korean Journal of Mineralogy and Petrology
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    • v.33 no.4
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    • pp.391-405
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    • 2020
  • Leaching chracteristics of Andong-dam sediment was conducted for heavy metal and nutrients. Five mixed sediment samples were prepared and leaching was conducted under aerobic and anaerobic condition for 60 days. Cd, Cu, Pb, Cr, Zn, Hg, As, Fe, Mn, phosphorus, and nitrogen were analyzed at each sampling time. The leaching rate of phosphorus was higher in anaerobic condition comparing with that of under aerobic condition. Some samples showed higher than the water-quality level IV. In case of As and Cd which showed highest contamination level in the sediment, leached concentration were 0.028 mg/L and 0.003 mg/L in maximum, respectively. The leached concentration is below than the lake water quality standard of Korea. Other heavy metals including Cu, Pb, and Cr also showed similar trend. Five step sequential extraction showed that easily extractable 1-2 step portion such as ion-exchangeable and adsorbed one was less than 10% and the most of the portion was residual. For As and Cd, the residual portion were 80% and 95% respectively indicating the risk by the heavy metal leaching into the lake for a short period was not high in comparing with the contamination levels.

Reaction Kinetics for the Synthesis of Diphenyl Carbonate from Dimethyl Carbonate (디메틸 카보네이트(DMC)로부터 디페닐카보네이트(DPC) 합성을 위한 반응속도론)

  • Choi, Yu-Mi;Cho, Im-Pyo;Cho, Hoon;Lee, Jin-Hong;Han, Myung-Wan
    • Korean Chemical Engineering Research
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    • v.50 no.5
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    • pp.766-771
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    • 2012
  • PC (polycarbonate) is one of the widely used engineering plastics. Polycarbonate (PC) is traditionally produced by the reaction of phosgene and bisphenol-A. This phosgene process has the disadvantage as the high toxicity and corrosiveness of phosgene. The main point of focus to overcome the disadvantage of phosgene based process has been a route through dimethyl carbonate (DMC) to diphenyl carbonate (DPC). In this paper, for the DPC synthesis reaction using PBO as a catalyst, the effect of reaction temperature, reactant ratio, catalyst concentration on the reaction yield was investigated. A kinetic model for the DPC synthesis reaction was proposed and kinetic parameters for the proposed model was determined from batch reactor experiments. The predicted results by the proposed model were in good agreement with the experimental results.

A study on Thermodynamics Analysis of $CH_4+CO_2+H_2S$ Mixture Gas Hydrates ($CH_4$, $CO_2$, $H_2S$ 혼합기체 하이드레이트 특성분석)

  • Han, Kyuwon;Moon, Donghyun;Shin, Hyungjoon;Lee, Jaejung;Yoon, Jiho;Lee, Hyunghoon;Lee, Gangwoo
    • 한국신재생에너지학회:학술대회논문집
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    • 2010.06a
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    • pp.218.2-218.2
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    • 2010
  • 저분자량의 가스와 물이 물리적 결합으로 이루어진 가스 하이드레이트는 상대적으로 많은 양의 가스가 포집될 수 있다는 특성을 이용하여 다양한 분야에서 활발한 연구가 진행되고 있다. 본 연구에서는 매립지에서 발생되는 매립가스를 하이드레이트의 원리를 이용하여 효율적으로 저장 및 수송하기위한 공정에 적용하기위해 필요한 매립지 가스 하이드레이트의 상평형에 대한 특성을 분석하고자한다. 일반적으로 매립지 가스에는 메탄이 약 50%, 이산화탄소가 약 35%, 질소가 약 6% 포함되어 있으며 그 밖에 산소, 수분, 암모니아 황화수소 메르캅탄 등 할로겐 계통을 포함한 탄화수소계화합물 수십여종이 포함되어 있다. 이러한 매립지가스를 하이드레이트화 하기위해서는 매립지가스에 포함된 다양한 성분들이 하이드레이트 형성에 미치는 영향을 알아볼 필요가 있다. 특히 황화수소의 경우 독성이 있으며, 실제 플랜트에서 장비의 부식등 악영향을 미치므로 이와 관련한 기초 연구가 필요하다. 따라서 본 연구에서는 메탄, 이산화탄소, 황화수소가 각각 49.9%, 50.05%, 500ppm의 조성으로 이루어진 혼합가스를 이용하여 하이드레이트 생성 및 해리 시 거동을 측정하고 그 상평형 영역을 기존데이터와 비교분석 하였다. 25bar, 36bar에서 측정한 상평형 데이터는 한국해양대학교 에서 측정한 결과와 마찬가지로 실제 상평형 영역이 CSMHYD 프로그램으로 예측한 것보다 하이드레이트의 안정영역이 약 2bar 정도 높게 형성되는 것을 확인하였으며, $CH_4+CO_2+H_2S$ 혼합가스 하이드레이트의 생성 시 mol consumption은 $CH_4+CO_2$ 혼합가스 하이드레이트와 유사하게 나타났다. 이 결과로 유추하건대, 황화수소의 첨가는 하이드레이트의 형성 압력을 높이지만, 하이드레이트 형성률에는 크게 영향을 미치지 않는다고 할 수 있다.

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Antiproliferative Activity of Vegetable Soup in Human Cancer cells for Wellness Convergence (융복합적인 웰리스를 위한 야채수프의 인간 암세포 증식 억제효과)

  • Sim, Jae-Geun;Lee, Jae-Hyeok;Park, Jeong-Suk
    • Journal of Digital Convergence
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    • v.13 no.8
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    • pp.543-548
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    • 2015
  • The present sturdy was designed to determine the effect of the antiproliferation in human cancer cells using the ordinary vegetable soup (VS), the soup with broccoli (VSB) and the soup with tomatoes(VST). Human cancer cells identify the cancer cell growth with MTS, using stomach cancer cell line(AGS), human promyelocytic leukemia (HL-60) and lung cancer cell line (A549). VSB and VST are effective on the cancer cell growth inhibition activities of AGS and have a significance compared with VS. VST has a significance with HL-60 and VSB works well in A549 more than VS. Mixed vegetable soup is considered to applicate with functional materials and using for wellness life.