• Title/Summary/Keyword: anthracene

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Biodegradation of Polycyclic Aromatic Hydrocarbons by White Rot Fungi (백색부후균을 이용한 다환방향족 탄화수소(PAHs) 의 분해)

  • 류원률;서윤수;장용근;조무환
    • KSBB Journal
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    • v.15 no.3
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    • pp.262-267
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    • 2000
  • The white rot fungi Phanerochaete chrysosporium(IFO 31249) Trametes sp and Pleurotus sp. were studied for their ability to degrade Polycyclic Aromatic Hydrocarbons(PAHs) using anthracene and pyrene as model compounds. The disapperarance anthracene and pyrene of from cultures of wild type strains. P chrysosporium Trametes sp. and Pleurotus sp was observed However the activities of ligninolytic enzymes were not detected in P chrysosporium cultures during degradation while ligninolytic enzymes were detected in both culture of Trametes sp. and Pleurotus sp. Therefore our results showed that PAHs was degraded under ligninolytic as well as nonligninolytic conditions. The results also indicate that lignin peroxidase(LiP) mananese peroxidase(MnP) and laccase are not essential for the biodegradation of PAHs by white rot fungi.

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Analogue Substrate Cometabolism by Chemical Oxidation of Recalcitrant PAHs (난분해 PAHs의 화학적산화에 의한 유사기질동시대사)

  • 류선정;박갑성
    • Journal of Korea Soil Environment Society
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    • v.3 no.3
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    • pp.87-92
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    • 1998
  • The effect of chemically oxidized intermediates of Polynuclear Aromatic Hydrocarbon (PAH) compounds on the degradation of the parent PAHs was characterized and evaluated for the context of cooxidation. Anthracene and pyrene exhibited extensive degradation (mean percent removal of 57.5%) after 28 days of incubation by introducing the Fenton oxidation intermediate of the PAH compounds, while unoxidized anthracene and pyrene exhibited 12.5% removal The chemical oxidation products can serve as a structually similar analogue substrates for a consortia of soil microorganisms and as a metabolic intermediates in the biodegradation sequence of the parent PAH compounds. These results may be interpreted in the context of cooxidation mechanism whereby high recalcitrant PAH compounds are biodegraded in the soil and suggest a potential tool for bioremediation of PAHs contaminated soils and protection of groundwater.

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Preparation and Holographic Recording of Fluorescent Photopolymer Films Containing Anthracene Polymer for Security

  • Park, Tea-Hoon;Kim, Yoon-Jung;Kim, Jeong-Hun;Kim, Eun-Kyoung
    • Journal of the Optical Society of Korea
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    • v.14 no.4
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    • pp.305-309
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    • 2010
  • Photopolymer films containing fluorescent anthracene polymer, polymethyleneanthracene (PMAn), were prepared with different concentrations of PMAn for holographic recording useful for security documents. The fluorescent photopolymer film showed enhanced fluorescent intensity due to the micro-separation which arose from grating formation and diffusion during photopolymerization. Experimental values of diffraction efficiency were well matched to the simulated values for photopolymers having different PMAn concentrations. Holography patterning was carried out using the fluorescent photopolymer under a photo-mask. A grating was confirmed using microscope techniques in the recorded area under the pattern. Importantly the recorded area showed enhanced fluorescence compared to the unrecorded part, allowing fluorescence patterns at micro scale along with the submicron grating pattern. The fluorescence pattern recorded on the photopolymer film provides additional readability of holographic reading and thus is useful for secure recording and reading of information.

DIETARY RISK ASSESSMENT FOR POLYCYCLIC AROMATIC HYDROCARBONS IN FOOD

  • Hyomin LEE;Eunkyung YOON;Yoonho CHOI;Gunyoung LEE;Yonsook JO;Kisung KWON;Soyoung CHUNG;Myungchul KIM;Jisun YANG
    • Proceedings of the Korean Society of Toxicology Conference
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    • 2002.05a
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    • pp.136-136
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    • 2002
  • Polycyclic aromatic hydrocarbons(PAHs) vary in their carcinogenic potencies. The more potent PAHs carcinogens are 3-methylcholantheren and 7, 12- dimethyl benzo(a)anthracene, while dibenzo(a, c)anthracene has very little carcinogenic activity. Risk assessment of chemical mixture containing various congeners which toxic potency are each different, are conducted using toxic equivalency factors(TEFs).(omitted)

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이액상계를 이용한 토양슬러리 반응기에서의 PAH 거동 특성

  • 이재영;백기태;조현정;양지원
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2003.09a
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    • pp.144-147
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    • 2003
  • In this study, the mass transfer behaviors of phenanthrene, anthracene, and pyrene in soil slurry reactor (SSR) using two-liquid phase (TLP) system were investigated. The mass transfer ratio and rate of PAH in the TLP system using light paraffine oil, which has the highest solubility of PAH, were influenced by the amount of light paraffine oil and mixing speed. When the amount of light paraffine oil decreased from 15 % to 2.5 % (v/v), the mass transfer ratio of anthracene decreased significantly compared with that of phenanthrene and pyrene. As mixing speed increased, the initial mass transfer rate of PAH within 1 day was enhanced. However, each final mass transfer ratio of three PAHs after 5 day was similar irrespective of mixing speed.

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이액상계 생물반응기를 이용한 PAH의 분해

  • Lee Jae-Yeong;Kim Yong-Gi;Yang Ji-Won
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2005.04a
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    • pp.159-162
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    • 2005
  • In this study, a two-liquid-phase (TLP) bioreactor was conducted to enhance the biodegradation efficiency and rate of PAH. Phenanthrene was degraded efficiently irrespective of the type and the amount of water-immiscible liquid (WIL). The degradation efficiency of anthracene was much higher in paraffine oil than in silicone oil because the mass transfer of anthracene was different in the two WILs. Pyrene was only transferred from soil to WIL during 5 days. It seemed that the degradation of PAH in the TLP bioreactor was mainly dependent on the mass transfer of PAH.

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Identification of New Compounds from Catharanthus roseus Hairy Root Cultures

  • Chung, Ill-Min;Ali, Mohd;Yang, Young-Mok;Peebles, Christie A. M.;Chun, Se-Chul;Lee, Sun-Joo;San, Ka-Yiu;Ahmad, Ateeque
    • Bulletin of the Korean Chemical Society
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    • v.28 no.8
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    • pp.1294-1298
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    • 2007
  • Two new compounds lanast-5,8-dien-3β-ol-27-oic acid-3β-D-glucopyranosyl (4'-1'')-10'',11''-dimethoxy anthracene (1), 2-methoxy-6-(n-nonacontan-5'',6''-dionyl)-11-hydroxy-13-methyl-11β-D-rhamnopyranoside anthracene (2) have been isolated from the hairy root cultures of Catharanthus roseus. Their structures have been elucidated with the help of 500 MHz NMR using one- and two-dimensional NMR in combination with IR, EI/MS, FAB/MS and HRFABMS spectroscopy.

Synthesis and Characterization of Novel Blue Materials based on Anthracene Derivatives for High Efficient OLED

  • Zhao, QingHua;Jung, Sung-Ouk;Kang, Dong-Min;Kim, Yun-Hi;Kwon, Soon-Ki
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.439-442
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    • 2007
  • Novel blue materials based on anthracene derivatives were synthesized by Grignard reaction, the Suziki coupling reaction, etc. They showed excellent thermal stability and emitted bright blue light, which will been used for OLED and expected to obtain high efficiency and good color purity.

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Studied on the Mass Transfer and the Vacuum Condensing Point of Sublimatography(I) -Relations between the Heating Temperature and the V.C.P at different Degree of Vacuum- (Sublimatography의 V.C.P 및 물질전달에 관한 연구(I) -진공도 변화에 따른 V.C.P 와 $t_h$와의 관계-)

  • Kim, Joo-Bong;Sohn, Jin-Un
    • Journal of the Korean Chemical Society
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    • v.14 no.4
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    • pp.321-326
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    • 1970
  • The relation between the heating temperature and the V.C.P(Vacuum Condensing Point) at different degree of vacuum through the sublimatographic separation was studied where by ; (1) Anthracene and Anthraquinone, ${\alpha}$-Naphtol and ${\beta}$-Naphthol, o-Aminobenzoicacid and p-Aminobeenzoicacid were easily separated from each of its mixtures as shown in Figure9, 10 and 11, while tailings appeared appreciably. The results were in good agreement with those expected from the $t_k$-V.C.P curves in Figures 3,4,5,6,7 and 8. (2) The relation between the degree of vacuum and the V.C.P. of ${\alpha}$-Naphthol and Anthracene at different heating temperatures appeared as follows and are shown in Figures 12 and 13.

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