• Title/Summary/Keyword: red water

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홍삼박으로부터 산성다당체의 추출조건 조사 (Extraction Condition of Acidic Polysaccharide from Korean Red Ginseng Marc)

  • 이종원;도재호
    • Journal of Ginseng Research
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    • 제26권4호
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    • pp.202-205
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    • 2002
  • 홍삼에 70% 알콜로 추출하고 남은 홍삼알코올박과 물로 추출하고 남은 홍삼물박은 거의 이용되지 않는데 이 홍삼박에는 다량의 산성다당체가 존재하므로 홍삼박으로부터 산성다당체를 효과적으로 추출할 수 있는 산업적으로 이용할 대량 생산제조공정에 대해서 조사하였다. 홍삼알코올박 및 홍삼물박 모두 건조전보다 건조후 산성다당체의 추출효율이 높았으며, 추출시간과 추출회수가 증가함에 따라 추출되는 산성다당체의 양이 증가하는 것으로 조사되었다. 따라서 생산제조공정으로서 홍삼박을 건조시킨 후 입자를 3.35 mm 이하로 분쇄하고, 추출온도는 8$0^{\circ}C$에서 1~2시간 추출하면서 추출회수는 2~3회가 최적인 것으로 사료된다. 또한 산성다당체의 추출 효율을 높이기 위해서는 홍삼박에 $\alpha$-amlyase 및 cellulase 효소를 처리했을 때 추출효율이 20~50%까지 높은 것으로 나타났다.

Bulb Storability of Red and Yellow Onion (Allium cepa L.) Cultivars Grown in Korea

  • Nam, Euri;Cho, Dong Youn;Lee, Eul-Tai;Kim, Cheol-Woo;Han, Taeho;Yoon, Moo-Kyoung;Kim, Sunggil
    • 한국육종학회지
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    • 제43권2호
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    • pp.126-132
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    • 2011
  • The bulb storability of eight red and ten yellow onion (Allium cepa L.) cultivars grown primarily in Korea was evaluated. During storage, sprouting occurred earlier in red cultivars than in yellow cultivars. In addition, the ratio of sprouted to unsprouted bulbs increased more rapidly in red cultivars than in yellow cultivars. However, not all yellow cultivars had strong storabilities. Bulb storability of three yellow cultivars was as poor as that of red cultivars, suggesting only a slight possibility of a pleiotropic effect of color and bulb storability. Meanwhile, $F_3$ lines of a red cultivar selected based on stronger storabilities showed intermediate storabilities between those of the red and yellow cultivars, implying that strong storability could be obtained by successive selection. In contrast, $F_1$ hybrids from crosses between yellow and red breeding lines showed poor storability compared with the yellow cultivars, indicating that poor storability may be dominant over strong storability. The relationships between color and other traits that potentially affect storability, such as fresh and dry weight, water content, and firmness of bulbs, were evaluated. No significant differences in these traits were observed between the two colors, although the water content of yellow cultivars and the dry weight of red cultivars were slightly higher than their counterparts. Correlation analyses between bulb storability and other traits, including weight, water content, and firmness, also showed no significant correlations. In this study, no correlations were identified between bulb color, storability, and other traits. However, based on these results, red cultivars with stronger storabilities could be developed through successive selection of bulbs with stronger storabilities.

MODIS Data를 이용한 GOCI의 적조 탐지 가능성에 대한 연구 (A Study on Possibility of Red Tide Detection Using MODIS Data)

  • 김용민;변영기;송우석;유기윤
    • 한국측량학회:학술대회논문집
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    • 한국측량학회 2007년도 춘계학술발표회 논문집
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    • pp.131-134
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    • 2007
  • In this paper, we evaluate a red tide detection possibility of GOCI(Geostationary Ocean Color Imager) which will be launched in 2008. To detect red tide, we use a similar wavelength range of MODIS normalized water-leaving radiance data instead of GOCI data. Supposed to GOCI, red tide detection algorithm is based on MRI(MODIS Red tide Index) and use 667nm band to filter turbid water. The algorithm's effectiveness is verified by detecting large Cochlodinium polykrikoides red tide event that was appeared in Korean coastal waters. The evaluation was done by comparing the result with the update data provided by the NFRDI.

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Pre-Red Mud 및 Bio-Solids의 토양 안정화제 활용 가능성에 대한 연구 (A Study on Pre-Red Mud and Bio-Solids Applicability as Soil Stabilizer)

  • 양주경;강선홍
    • 상하수도학회지
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    • 제25권3호
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    • pp.419-428
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    • 2011
  • Recycling as a stabilizer of industrial by-product can be terms of the proper handling of industrial by-product and positive side in terms of recycling of waste. This study was performed to evaluate has the possibility as stabilizer by primary processing Pre-Red Mud and Bio-Solids which are generated as waste in soils contaminated with heavy metals and compared the efficiency with steel slug being applied in an existing site. In evaluation of the arsenic-fixing ability of stabilizer in batch test, Bio-Solids have the similar arsenic-fixing ability with Pre-Red Mud, which shows 17% h igher arsenic-fixing ability than PS Ball. Since the stabilization periods using Bio-Solids and Pre-Red Mud are faster than the PS Ball, they seems to be better stabilizer than PS Ball to decrease the leaching of arsenic in contaiminated soil.

Preliminary study on the visual sensitivity of Oreochromis niloticus using LED light source for the aquaculture development in Uganda

  • Esther Kagoya;Kyoungmi Kang
    • Fisheries and Aquatic Sciences
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    • 제26권8호
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    • pp.514-523
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    • 2023
  • The visible threshold of Oreochromis niloticus responded to high light intensity under short wavelengths, whereas the response to low light intensity under long wavelengths was low, with a minimum visual threshold of 574 nm of LED lights. Movement distance of O. niloticus was dropped at 31℃ and increased abnormally at 37℃ under natural light. Comparing movement distance under red (622 nm) and green (518 nm) lights of LED, movement distance and swimming speed under red and green lights were higher than under natural light. However, the movement distance decreased rapidly at 31℃ under red light and lowest at 33℃ under green light. After that, there was a tendency to adapt to high water temperatures gradually. Consequently, red and green lights may be recommended for O. niloticus's aquaculture because the red and green lights have a positive effect on growth performance, survival rate, and metabolism, as shown in previous studies. It is necessary to control the water temperature below 32℃ because abnormal behavior above 32℃ revealed under red and green LED lights and natural light.

Gums 물질을 첨가한 홍삼생면의 품질특성과 저장성 (Quality Characteristics and Shelf-life of Red Ginseng Wet Noodles Prepared with Gums)

  • 김은미
    • 한국식품조리과학회지
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    • 제25권2호
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    • pp.160-169
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    • 2009
  • This study was performed to examine the quality characteristics of red ginseng wet noodles prepared with additions of carrageenan, xanthan gum, or guar gum. The quality characteristics of the samples were estimated in terms of their general composition, color differences, cooking characteristics, textural attributes, sensory qualities, and microbial growth during storage. The results were as follows. Protein content was significantly decreased in the guar gum added group and ash content was significantly increased in the carrageenan added group (p<0.05). Lipid, water, and Na contents were not significant different among the groups. However, water binding capacity was significantly increased in the group with added xanthan gum. Over 10 weeks of storage, water contents did not differ significantly between the xanthan gum and guar gum added groups. In all the added gum groups, L- and a- values were significantly increased whereas b- values decreased (p<0.05). In texture profile analyses, chewiness, cohesiveness, hardness, and springiness were significantly increased in the carrageenan and xanthan gum added groups (p<0.05). According to sensory evaluations, surface color, red ginseng flavor, red ginseng taste, softness, chewiness, and overall acceptability were considered very good in the xanthan gum and guar gum added groups (p<0.05). Therefore, the red ginseng noodles containing xanthan gum and guar gum were deemed most preferable and presented the safest shelf-life during 10 weeks at -$10^{\circ}C$.

알루미늄 제련 폐기물(Red Mud)의 활성화 방법에 따른 수용상의 인산염 제거특성 (Phosphate Removal from Aqueous Solution according to Activation Methods of Red Mud)

  • 김이태;배우근;김우정
    • 한국물환경학회지
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    • 제20권5호
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    • pp.466-472
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    • 2004
  • Red mud is formed as a waste during bauxite refining known as Bayer's process. Its main constituents are iron, aluminium, sodium and silica. The disposal of large quantities of wasted red mud causes a serious ecological problem. In this study, the red mud wasted from the bauxite refinery was studied for phosphate removal from aqueous solution according to activation methods. The influence of heat treatment, and neutralization with sea water and acid treatment level for the optimum conditions for phosphate removal have been determined. Heat treatment combined with acid treatment is most suitable for the removal of phosphate from aqueous solution. The optimal condition was activated with 1 N HCl solution after heating in $600^{\circ}C$ during 4 hours. Acid and heat treatment causes sodalite compounds which hinder the phosphate adsorption to leach out. The adsorption data obtained followed a first-order rate expression and fitted well with the Freundlich Isotherm well.

A Study on the Color of Natural Solvent for the Red Color Reproduction of Safflower

  • Lee, Mi Young;Wi, Koang Chul
    • 보존과학회지
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    • 제37권1호
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    • pp.13-24
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    • 2021
  • Safflower, a natural dye representing red, is the dye that materials and dyeing method are recorded in the literature, including materials and dyeing. Although the safflower is the same, the ash used as a mordant is recorded differently in each literature, which greatly affects the aesthetic perspective in realizing the traditional safflower red. Therefore, the optimal conditions for realizing the traditional safflower red were sought. The experiment was conducted by pH investigation, dyeing and color analysis by dyeing solution water, concentration, and temperature by ash, and the unique color of red was confirmed. As a result of the test, the pH point of time when the uniq ue color was expressed was 11.53 as goosefoot ash (natural bedrock water), which was 1:100 for concentration and 70℃ for temperature, which was easier to extract red pigment than other ash, indicating that it is suitable for safflower dyeing. The analysis of the ash showed that K and Si play an important role in dyeing, especially Si, which is an element that inhibits carthamon. The color of red was similar to that of KS Standard vivid purplish red in the ash of the goosefoot, and the other ash was deep purplish pink. In the light of findings, it was possible to quantify the dyeing method through traditional materials and find the standard color of red color, and it is judged to be a basic data for studying the unique color of natural materials.

사람 혈소판으로부터 serotonin 방출반응 대한 홍삼의 물 추출물 및 petroleum ether 추출물의 억제 효과 (Inhibititory Effect of Water- or petroleum Ether-extract from Red Ginseng on Serotonin Release from Human Platelets (Comparative Study Between 6-year and 4-year Old of Red Ginseng))

  • 박화진;고성룡
    • Journal of Ginseng Research
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    • 제22권2호
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    • pp.140-146
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    • 1998
  • It was founded that an X-compound is contained in extracts from the root of old red ginseng (6RG) compared with that from the root of 4-year old red ginseng(4RG). Both water extract and petroleum ether extract (PEII) from 6RG or 4RG inhibited the release of [$^{3}H$]-serotonin induced by platelet activating factor (PAF; 40 ng/ml). Water extract and PEll from 6RG Inhibited potently PAF-induced [$^{3}H$]-serotonin release compared with those from 4RG. X-compound out of both water extract and PEll from 6RG inhibited the release of [$^{3}H$]-serotonin inducted by collagen (100 $\mu\textrm{g}$/ml) or thrombin(20 U/ml). X-compound had a synergistic effect with water extract from 4RG on collagen-and thrombin-induced [3H] -serotonin release out of human platelets. The concentration(IC50) of X-compound that require to inhibit 50% of [$^{3}H$]-serotonin-release was 3.25 $\mu\textrm{g}$/ml, and it is inferred that maximum concentration of X-compound that inhibits the release of [$^{3}H$]-serotonin is 10 $\mu\textrm{g}$/ml. Because thrombosis is resulted mainly from the irreversible aggregations which are intimately related with the serotonin release and migraine is also caused when serotonin is released, it is inferred that water extract, PEII and X-compound from 6RG have antithrombosis and antimigrainous functions by inhibiting the release of serotonin from human platelets.

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한국 남동해역의 냉수대 발생 변화와 Cochlodinium polykrikoides 적조와의 상관성 연구 (Study on the Correlation Between the Upwelling Cold Waters and Cochlodinium polykrikoides Red Tide in the Southeast Sea of Korea)

  • 김범규;황도현;박수호;김흥민;엥흐자리갈 운자야;김대현;윤홍주
    • 한국전자통신학회논문지
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    • 제14권3호
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    • pp.559-572
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    • 2019
  • 한반도 동해 남부해역은 매년 하계에 집중적으로 냉수대가 형성되어 빈번한 이상해황이 발생한다. 동해안에 발생하는 냉수대는 바람의 영항을 지배적으로 받는데 남풍계열의 바람이 3일에서 7일 이상 지속적으로 불어오는 경우 발생한다. 본 연구에서는 냉수대의 발생과 변화 및 Cochlodinium polykrikoides 적조와의 상관성을 분석하기 위하여 기상청, 한국수력원자력, 해양조사원의 부이의 수온과 풍향 및 풍속, COMS/GOCI의 클로로필 자료, 바람자료와 NOAA에서 제공하는 GHRSST Level 4 SST, 국립수산과학원의 적조속보자료를 활용하였다. 동해안 연안용승시 용승된 수괴는 해류를 따라 북쪽으로 이동하는 특성을 보이며 수괴를 따라 고농도의 클로로필이 형성되는 특성을 보였다. 남쪽의 동한난류의 세력이 강하게 형성될 때 적조가 북상하는 특성을 나타내었다.