• Food Science and Biotechnology
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• 제16권1호
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• pp.99-103
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• 2007

The purpose of this study was to develop a simple detection method, possibly at the species-level, that allows for large-scale screening of bifidobacteria. Human fecal samples were plated on MRS-raffinose agar containing cysteine and neomycin sulfate, serving as selective pressure for bifidobacteria, and 0.003%(w/v) bromocresol green. All of the test strains grew well on this medium at $37{\pm}1^{\circ}C$, forming white colonies surrounded by yellow halos, which presented a sharp contrast against the green background. In this disc assay, the required incubation time to develop a yellowish zone varied with the species of Bifidobacterium that was tested, allowing for differential counts and easy identification at the species-level: 10-14 hr for B. bifidum, 20-22 hr for B. catenulatum and B. infantis. and 24-25 hr for B. longum and B. breve. No apparent color was observed for B. angulatum and B. adolescentis 28 hr after inoculation. To evaluate the results of pH indicator-based identification, individual isolates were subjected to a colony-PCR experiment with genus-specific primers. The amplified products from the isolates were in good accordance with those from the reference strains at a level of 95% agreement. These results suggest that the present method could be conveniently applied to cell counts, as well as to the preliminary identification of bifidobacteria from a variety of sample types including human feces, dairy products, and commercial probiotic supplements.

• 한국자원식물학회지
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• 제31권1호
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• pp.32-36
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• 2018

제주도 해안에서 선인장과의 한국 미기록 식물 Opuntia monacantha Haw.를 처음으로 발견하였다. "왕선인장"으로 명명된 O. monacantha Haw.(선인장과)는 곧추서서 자라며 상부 의가지들이 밑으로 쳐지는 경향이 있다. 그리고, 기존의 "선인장"에 비하여 식물체의 크기나 엽상경이 대형이다. 화피편 뒷면의 중륵에 자주색 줄무늬가 있다. 열매에는 엽침이 존재하지 않으며, 열매의 표면은 자주색을 띠나 과육은 황녹색이다. 종자는 대부분 흔적으로 남아있고 성숙한 종자는 매우 드물다.

• 한국환경보건학회지
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• 제1권1호
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• pp.14-17
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• 1974

A study was carried out to detect of illegal artificial dyes, and to confirm the used rate of illegal dyes in the production process of commercial drops (candy), from Dec. 10, 1972 to Feb. 10, 1973. In this study, it was used thin layer chromatography, the samples were divided into two groups, group A of inscribed trade name and group B of not inscribed trade name. To contrast with group A and group B, 100 samples were randomly collected in the market places, 50 samples from group A and 50 samples from group B. The following conclusions were obtained: 1) used rate of illegal dyes were 2% of group A and 9% of group B. 2) used rate of illegal dyes were 2% of red, 2% of yellow, 1% of violet and 6% of green, not in blue. 3) used rate of illegal dyes 3% of Rhodamine B, 3% of Auramine and 6% of Light green S.F. Yellowish. 4) Out of 20 cases those used mixed dyes, only one case was confirmed as two illegal dyes, and 4 cases were used one illegal dye.

• 한국환경과학회지
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• 제19권5호
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• pp.585-590
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• 2010

This study attempted to facilitate various groundcover plants, related to phytoremediation material, and advance shade plants with a heavy metal tolerance to contaminated soil in an urban shade space. Saxifraga stolonifera, which has commonly been used a landscape shade plants, was evaluated to determine its heavy metal tolerance to different concentrations(Control, $100mg{\cdot}kg^{-1}$, $250mg{\cdot}kg^{-1}$ and $500mg{\cdot}kg^{-1}$ treatment) of Cd, Pb and Zn in soil. The growth of Saxifraga stolonifera showed no significant tendency after the initial transplantation, but showed distinct changes with the respective treatment heavy metal types and concentrations over time. Especially, severe chlorosis, with more yellowish green leaves, was observed, with inhibition at Cd concentrations greater than $100mg{\cdot}kg^{-1}$. Conversely, no external symptoms or growth retardation were observed with Pb and Zn concentrations less than $500mg{\cdot}kg^{-1}$. Therefore, Saxifraga stolonifera can be applied as a long term phytoremediation species in soil contaminated with low concentrations of heavy metal in urban shade spaces.

• Journal of Applied Biological Chemistry
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• 제60권2호
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• pp.149-153
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• 2017

원목과 톱밥배지에서 푸른곰팡이의 오염과 성장은 표고버섯의 생장을 심하게 저해할 수 있다. 표고버섯 재배에서 푸른곰팡이병의 방제를 위하여 농약과 항생제와 같은 화학 약품의 사용은 일반적으로 허용되지 않는다. 본 연구에서는 푸른곰팡이병의 방제를 위하여 느타리버섯에서 갈반병을 일으키는 세균성 병원균을 분리하고 이들의 펩티드 독소를 분리하였다. Pseudomonas tolaasii 균주들은 항진균 활성을 갖는 톨라신 및 이와 구조적 유사체인 다양한 펩티드 독소를 분비한다. 이러한 펩티드들은 표고버섯의 생장에는 영향을 주지 않는다는 것이 알려져 있다. 펩티드 독소들을 Trichoderma harzianum H1 푸른곰팡이에 처리하였을 때, 푸른곰팡이의 성장을 저해하였다. 펩티드를 분비하는 20 종의 P. tolaasii 균주 중에서 강, 중, 약의 항진균 활성을 가진 균주의 수는 각각 8, 5, 7 종으로 나타났다. 표고버섯을 재배하는 동안에, 펩티드 독소를 함유한 세균 배양액에서 세균을 제거한 배양원액을 톱밥배지 표면에 자란 푸른곰팡이 균사에 분무하였다. 배양원액은 푸른곰팡이의 성장은 억제할 수 있는 반면, 표고버섯 생장과 생산에는 영향을 주지 않았다. 펩티드 독소를 함유하는 배양원액은 곰팡이의 흰색 균사체를 노란색의 마른 딱지로 변화시켰고, 이것은 펩티드 독소가 강력한 항진균 활성과 살균 활성을 갖고 있음을 보여준다.

• 한국육종학회지
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• 제40권4호
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• pp.461-465
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• 2008

"그린킹"은 제주특별자치도에 위치한 농촌진흥청 난지농업연구소에서 2005년에 육성한 껍질째 먹을 수 있는 다래품종이다. 이 품종은 Actinidia chinensis cv. "Apple Sensation"을 모본으로 하고 A. arguta를 부본으로 하여 1998년에 교배를 실시하였다. 실생육성과 계통선발은 1999년에서 2002년까지 실시하고 2003년에서 2004년까지 특성검정을 실시하였다. 수세는 야생다래와 비슷하게 강한 편이었으며 잎은 약간 암녹색을 나타내었다. 과실의 형태는 원통형이었고 과피는 녹색 또는 황녹색을 나타내었으며 털이 없다. 평균과중은 15.9g이고 과심은 작고 부드럽다. 과육색은 밝은 녹색이고, 당도는 $15.4^{\circ}Brix$를 나타내었으며 산도는 로 1.3%로 약간 신맛이 있다. 생산량은 야생다래 보다 약 2배 정도 높으며 수확기는 10월 중순이다. 이 품종은 우리나라 중남부지방에 재배가 가능할 것으로 판단된다.

• 한국동물위생학회지
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• 제31권4호
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• pp.465-469
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• 2008

Unusual yellowish-green intramuscular granulomatous lesions were found in a carcass of Hanwoo(slaughtered, 30 month old). Those were 1-3 mm in diameter, oval shaped, and paralleled with muscle fibers. Histologically, severe inflammation, eosinophilic granulomas and necrosis were observed in the muscle tissue. We also observed sarcocysts in the muscle cells. In a polymerase chain reaction, we identified 900bp length, sarcocystis specific fragment. It would be diagnosed as sarcocystosis in Hanwoo.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.1120-1123
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• 2008

Efficient, color stable multi-EML WOLED have been fabricated using newly synthesized yellowish green dopant Ir(chpy)3 or Ir(mchpy)3. The devices have high external quantum efficiency of 11.7%, color rendering index of 87, variation of CIE coordinate of (0.02, 0.01) between 10 to 5000 cd/m2, and low roll-off in efficiency with increasing brightness.

• 전기학회논문지
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• 제59권5호
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• pp.927-931
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• 2010

Recently, high luminance and high efficiency were realized in OLED with multilayer structure including emitting materials such as metal-chelate complexes. We synthesized a new luminescent material, namely, [2-(2-hydroxyphenyl)quinoline] (Zn(HPB)q) which has low molecular compound and emitted in yellowish green region. The ionization potential(IP) and electron affinity(EA) of Zn(HPB)q were measured by cyclic-voltammetry(CV). As a result, IP and EA of Zn(HPB)q were calculated 6.8 eV and 3.5 eV, respectively. We fabricated the devices and observed the possibility of Zn(HPB)q as electron transporting layer. We have obtained an improvement of luminance and decrease of turn-on voltage using Zn(HPB)q as electron transporting layer.

• 대한화학회지
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• 제12권4호
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• pp.146-149
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• 1968

A new chelate compound, tris(8-bydroxyquinolino)molybdenum(III), [$Mo(C_9H_6ON)_3$], has been prepared by the method of electrolytic reduction of the acidic molybdate solution. Thermal decomposition products of the chelate has been studied by DTA and TGA method. It is concluded that the decomposition product is a yellowish green colored bis(8-hydroxyquinolino)dioxo molybdenum(VI), [$MoO_2(C_9H_6ON)_2$].