• 제목/요약/키워드: Triphenylmethane

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Enterobacter cloacae MG82에 의한Triphenylmethane흡수 특성과 탈색효소의 세포내 위치

  • 정민선;곽순전;김병홍;정영건;강사욱;민경희
    • 한국미생물·생명공학회지
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    • 제25권1호
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    • pp.37-43
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    • 1997
  • Triphenylmethane was decolorized rapidly by enterbacter cloacae MG 82 at initial reaction time. The spheroplast showed higher activity of triphenylmentane decolorization than that of intact cell suspension. The outer part of the bacterial cell envelope and the peptidoglycan are important for the function of transport barrier of triphenylmethane. In intact cell, decolorization activity was higher at 37$\circ $C than at $\circ $C, indicating that triphenylmethane decolorization is due to the enzyme reaction. Culture filtrate showed no decolorization activity, while cell-free extract appeared high activity of 1.45 units, clearly showing that decolorization activity was due to the cell-free extract. Comparing decolorization activities of cell fractions, it was found that decolorization activity was located at the compartment of cytoplasmic membrane. The enzyme activity was also shown to be Mg$^{++}$-dependent. The optimum pH and temperature of enzyme activity were 7.0 and 50$\circ $C, respectively. The thermostability of this enzyme at 35$\circ $C was kept to 58% for 3 hours.

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Relative Hydrophobicity of Triphenylmethane Dyes as Revealed by Interaction with Tetraarylborate Anions

  • Lee, Beom-Gyu;Yoon, Kil-Joong;Kim, Jin-Doo;Kim, Kang-Jin
    • Bulletin of the Korean Chemical Society
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    • 제10권4호
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    • pp.357-359
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    • 1989
  • The ion aggregates formed between cationic triphenylmethane dyes and tetraphenylborate(TPB) or tetrakis(4-fluorophenyl) borate (TFB) anions have been investigated spectroscopically. The photometric sensitivities of the dyes are found to be increasing in the order pararosaniline < malachite green < methyl violet 2B < crystal violet < ethyl violet. Cetyltrimethylammonium bromide(CTAB) and Triton X-100(TX-100) destroy the ion aggregates. By comparing the concentration of surfactant beyond which dye-borate mixed solutions behave identically with the dye blank, the order of hydrophobicity appears to be parallel with that of photometric sensitivity.

2차세공이 형성된 모더나이트와 알루미나를 혼합한 촉매상에서 Triphenylmethane의 분해반응 (Catalytic Cracking of Triphenylmethane on Alumina Mixed with Mordenite Formed Secondary Pore)

  • 이경환;최준우;하백현
    • 공업화학
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    • 제8권6호
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    • pp.1048-1053
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    • 1997
  • 수소형 모더나이트를 불화수소산처리하여 실리카/알루미나의 비가 다른 변형된 모더나이트를 만들고 이를 $\gamma$-알루미나와 혼합한 촉매를 제조하여 미소반응기에서 triphenylmethane (TPM)의 분해반응을 실시하였다. 미세공 구조인 수소형 모더나이트를 불화수소산처리로 탈알루미늄하면 산량은 감소하지만 2차 세공인 중세공이 형성되어 TPM의 분해활성과 2차 분해생성물인 벤젠의 선택성이 향상되었다. 그러나 더욱 불화수소산처리된 모더나이트는 산량 감소와 일부 세공구조의 파괴에 의한 미세공막힘 현상에 의해 분해활성이 저하되었다. 따라서 전처리된 모더나이트상에서 TPM의 분해활성과 벤젠의 선택성은 모더나이트의 실리카/알루미나 비가 17 정도에서 가장 우수하였다. 이들 전처리된 모더나이트를 알루미나와 혼합한 촉매는 순수한 모더나이트 촉매보다 TPM의 분해활성이 더욱 우수하였다. 이는 알루미나의 큰 중세공에서 TPM이 1차 분해반응하고 다음에 모더나이트의 중세공과 미세공에서 분해되는 단계적인 분해반응이 일어나기 때문이다.

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Triphenylmethane Dye와 Cyanide Ion과의 반응에 대한 Micelle의 촉매작용 (Micelle Catalysis on the Reaction between Triphenylmethane Dyes and Cyanide Ion)

  • 구원회
    • 대한화학회지
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    • 제17권6호
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    • pp.411-415
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    • 1973
  • Cyanide ion과 triphenylmethane dye와의 반응은 cetyltrimethyl ammonium bromide(CTABr)의 cationic micelle에 의하여 현저히 반응속도가 빨라지며 sodium lauryl sulfate(NaLS)의 anionic micelle에 의하여 반응속도가 늦어진다. 또한 CTABr존재하의 반응은 inorganic anion에 의하여 inhibition, 되며 NaLS존재하의 반응은 inorganic cation중의 몇가지, 특히 $Zn^{++},\;Cd^{++}$등에 의하여 현저하게 반응이 빨라지는 salt effect를 나타낸다. 물과 잘 혼합되는 몇가지 유기용매의 micelle catalysis에 대한 영향은 대체로 수용액 일때보다 작게 나타나서 반응속도가 늦어지거나 malachite green과의 반응에서 methanol은 수용액일때보다 반응속도가 빨라지는 특이한 solvent effect를 나타내었다.

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Citrobacter sp.에 의한 Triphenylmethane계 색소의 분해 (Degradation oof Triphenylmrthane Dyes by Citobacter sp.)

  • 민상기;조영배;전홍기
    • 생명과학회지
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    • 제5권1호
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    • pp.8-19
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    • 1995
  • The Optimal condition for degradation of crystal violet and other triphenylmethane dyes by Citrobacter sp. SK-3 isolated from the activated sludge of dye manufacturing factory was investigated. The optimal culture medium for the degradation of triphenylmethane dye was composed of minimum inorganic salt medium supplemented with 0.5% galactose, 0.1% beef extract, with the initial pH of 8.0 to 9.0. Under this condition, Citrobacter sp. SK-3 degraded 200 ppm of crystal violet completely within 24 hours. Citrobactre sp. SK-3 also degraded efficiently malachite green, pararosaniline, brilliant green, methyl violet, basic fuchsin and methyl red. Analysis of the degradation products of crystal violet through this layer chromatography and high performance liquid chromatography indicated that the methyl groups bound to crystal violet backborn were gradually demethylated to pentamethyl-, tetramethyl- and trimethylpararosaniline.

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