• 제목/요약/키워드: Fungicidal

검색결과 231건 처리시간 0.027초

Antifungal activities of 2-arylthio-,2-arylthio-5-methoxy-,2,3-bisarylthio-juglones and 2,3-bisarylthio-5,8-dimethoxy-1 A-naphthoquinones

  • Shim, Ju-Yeon;You, Hea-Jung;Choi, Ko-Un;Choi, Ik-Hwa;Chae, Mi-Jin;Ryu, Chung-Kyu
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.350.3-351
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    • 2002
  • 2-Arylthio-, 2-arylthio-5-methoxy-, 2, 3-bisarylthio-juglones and 2, 3-bisarylthio-5, 8-dimethoxy-1, 4-naphthoquinones were newly systhesized for the evaluation of antifungal activities. These derivatives were prepared by methylation of juglone and 2, 3-dichloro-5, 8-dihydroxy-1, 4-naphthoquinone. and by resioselective nucleophilic subsitution with arylthiols. All compounds were tested in vitro for their growth inhibitory activities against pathogenic fungi by the standard method. The MIC values were determined by comparison to flucytosine as a fungicidal standard agent. In general. In general. most juglone derivatives shows in vitro antifungal activities. Among them. 2-arylthio-5-methoxy-juglones showed most potent antifungal activities against all pathogenic fungi.

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Dithane M-45의 종자소독제로서의 살균효과 (Control of Some Seed Borne Organisms on Rice with Dithane M-45)

  • 박창석;조용섭
    • 한국응용곤충학회지
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    • 제11권2호
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    • pp.109-111
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    • 1972
  • 종자 산균제로써 Dithane M-45는 종래 사용해오던 유기수은제 보다 약간 우세한 살균력을 나타냈으며 적정농도는 1000ppm이였고, 적정시간은 4-6시간이었다. 그러나 Fusarium spp.에 대해서는 어느 농도에서도 흡족할만한 살균력을 나타내지 못하였다.

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Synthesis, Characterization and Biological Activities of Novel (E)-3-(1-(Alkyloxyamino)ethylidene)-1-alkylpyrrolidine-2,4-dione Derivatives

  • Zhu, Zhao-Yong;Shi, Qing-Ming;Han, Bao-Feng;Wang, Xian-Feng;Qiang, Sheng;Yang, Chun-Long
    • Bulletin of the Korean Chemical Society
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    • 제31권9호
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    • pp.2467-2472
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    • 2010
  • Twenty novel tetramic acid derivatives (E)-3-(1-(alkyloxyamino)ethylidene)-1-alkylpyrrolidine-2,4-diones were synthesized by the reaction of 3-(1-hydroxyethylidene)pyrrolidine-2,4-diones with O-alkyl hydroxylamines. The title compounds were confirmed by IR, $^1H$ NMR, MS and elemental analysis. The structure of compound 6r was further verified by X-ray diffraction crystallography. The bioassays showed that most of the title compounds exhibited noticeable herbicidal and fungicidal activities.

인삼의 모잘록병 방제에 관한 시험 (Chemical Control of Damping-off of Ginseng Caused by Rhizoctomia solani)

  • 이종화;김홍진;배효원
    • 한국응용곤충학회지
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    • 제17권3호
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    • pp.143-147
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    • 1978
  • 가. 인삼의 모잘록병을 방제하기 위하여 10종의 약제를 공시하여 실내 및 포장시험을 실시하였다. 나. 공시약제의 효과를 조사하기 위하여 실내에서 토양관법으로 그리고 포장에서는 모잘록병균을 인위적으로 접종한 균포와 자연발병상태의 균포에서 종자소독, 토양소독, 토양관주법으로 처리하였던 바, 다. 모잘록병 방제를 위해 기대되는 약제로는 Homai, Captan, Validamycin, Tachigaren등이 있다.

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Pigeonpea의 Fusarium 시들음병에 대한 화학적 방제 (Chemical Control of Fusarium Wilt of Pigeonpea)

  • Singh, Rajesh
    • 한국균학회지
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    • 제26권4호통권87호
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    • pp.416-423
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    • 1998
  • The fungicidal effects of four commercial fungicides, two herbicides and two insecticides have been examined on Fusarium udum, causing wilt disease of pigeonpea in vitro and in vivo. The fungicides Bavistin and MeMc inhibited the growth of the test pathogen completely at 8 and 30 ppm. The herbicide Butachlore inhibited the growth of the test pathogen up to 80.4%. The insecticides, Ekalux and Thiodane partially inhibited the radial growth at 1000 ppm. In unsterilized and sterilized soil MeMc was most effective in controlling the disease in comparison to Bavistin and Ekalux. Maximum rhizosphere fungal population was recorded in MeMc amended soil and minimum in case of Bavistin.

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Production of Weak Acid by Anaerobic Fermentation of Soil and Antifungal Effect

  • Kim, Hong-Lim;Jung, Bong-Nam;Sohn, Bo-Kyoon
    • Journal of Microbiology and Biotechnology
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    • 제17권4호
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    • pp.691-694
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    • 2007
  • Acetic acid and butyric acid were produced by the anaerobic fermentation of soil mixed with wheat or rice bran. The concentration of acetic acid produced in the wheat and rice bran-treated soil was 31.2mM and 8mM, respectively, whereas the concentration of butyric acid in the wheat and rice bran-treated soil was 25.0mM and 8mM, respectively. The minimal fungicidal concentration (MFC) for all the fungal strains was 40-60mM acetic acid, 20-40mM butyric acid, and 40-60mM mixture of acetic acid: butyric acid (1:1, v/v). Consequently, the efficacy of mixing wheat-bran with soil to control soil diseases was demonstrated.

Candida albicans에 대한 Amphotericin B, 5-Fluorocytosine 및 Rifampin 복합처리에 의한 항균력 상승효과 (Synergistic Action of Amphotericin B in Combination with 5-Fluorocytosine and Rifampin against Candida albicans)

  • 고춘명;박전한
    • 대한미생물학회지
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    • 제21권2호
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    • pp.271-276
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    • 1986
  • Amphotericin B and rifampin or 5-fluorocytosine were tested for synergism against Candida albicans in a synthetic mdium. The test was based on viability studies in which fungicidal activity was determined during the incubation hours of drug exposure. Concentration of amphotericin B(0.2ug per ml and 0.4ug per ml) in combination with inactive concentration of rifampin(12.5ug per ml) or 5-fluorocytosine(25ug per ml) resulted in rapid decrease of colony froming unit(CFU). On the basis of these and earlier studies, it is concluded that amphotericin Band rifampin or 5-fluorocytosine are synergistic against various yeasts and yeast-like fungi under widely differing experimental conditions.

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In vitro Antifungal Activity of Limonene against Trichophyton rubrum

  • Chee, Hee-Youn;Kim, Hoon;Lee, Min-Hee
    • Mycobiology
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    • 제37권3호
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    • pp.243-246
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    • 2009
  • In this study, the antifungal activities of limonene against Trichophyton rubrum were evaluated via broth microdilution and vapor contact assays. In both assays, limonene was shown to exert a potent antifungal effect against T. rubrum. The volatile vapor of limonene at concentrations above $1{\mu}l$/800 ml air space strongly inhibited the growth of T. rubrum. The MIC value was 0.5% v/v in the broth microdilution assay. The antifungal activity of limonene against T. rubrum was characterized as a fungicidal effect.

Manufacture and Properties of Inorganic Chemical Treated Wood by Introducing of Fluorides

  • Kim, Soung-Joon;Lee, Jong-Shin
    • Journal of the Korean Wood Science and Technology
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    • 제36권2호
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    • pp.73-78
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    • 2008
  • Inorganic chemical treated wood was prepared by impregnation of calcium or magnesium chloride ($CaCl_2$ or $MgCl_2$) solution and immersion in saturated solution of ammonium fluoride ($NH_4F$) as a reactant in order to make an introduction of a refractory fluorides with fungicidal and insecticidal effects in wood. The weight percent gains (WPGs) were increased with increase in concentration of calcium chloride or magnesium chloride solution, and were higher in treatment with calcium chloride than with magnesium chloride. Inorganic substances were produced mainly in the lumina of tracheides. These substances were proved to be the calcium fluoride or magnesium fluoride by the energy dispersive X-ray analyzer in conjunction with a scanning electron microscope (SEM-EDX). The treated wood showed good decay resistance because the weight losses were hardly occurred by the test fungi such as Tyromyces palustris and Trametes versicolor. The fire resistance effect was superior to the treated wood compared with that of the untreated wood.

N-치환-5-chloro-1,3-dimethylpyrazole-4-carboxamide의 합성과 살균력 (Synthesis and antifungal activity of N-substituted-5-chloro-1,3-dimethylpyra-zole-4-carboxamide)

  • 김용환;전원배;박창규
    • Applied Biological Chemistry
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    • 제35권2호
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    • pp.87-91
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    • 1992
  • 생리활성을 갖는 신규물질탐색의 일환으로 26종의 N-치환-5-chloro-1,3-dimethylpyra-zole-4-carboxamide 화합물을 합성하고, 이들 구조를 $^1H-NMR$로 확인하였다. 이들 유도체들을 Rhizoctonia solani, Botrytis cinerea, Pyricularia oryzae 및 Colletotricum gleosporiodes에 대한 in vitro에서의 균사생육억제효과를 검정한 결과 electron releasing group으로 meta 치환된 aniline의 carboxamide가 R. solani에 대해 12.5 ppm 수준에서 70% 이상의 살균효과를 보여주었다.

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