• Title/Summary/Keyword: 미생물 생육

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효모의 생육에 관한 연구 (제1보) Methanol자화균의 분리와 배양

  • 신규철;양한철
    • Proceedings of the Korean Society for Applied Microbiology Conference
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    • 1976.10a
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    • pp.188.1-188
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    • 1976
  • 주유소, 공장주변의 하수 및 토양으로부터 Methanol 자화성 효모 7주를 분리하고 그중 생육이 왕성한 균주 2주에 대하여 동정을 행한즉 양주, 모두 Candida속에 속하는 것으로 추정되었다. 양주는 모두 ethanol 자화성을 가지고 생육에는 Biotin을 요구하였다. 배양특성은 최적온도 $28^{\circ}C,$ 최적 pH4~5이고 methanol 농도 1% v/v에서 증식이 양호하였고, 균체수율은 대소비 methanol에 대하여 30~40%에 달하였다.

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Effect of Organic Fertilizer, Microorganism and Swaweed extract Application on Growth of Chinese Cabbage (유기질비료와 토양미생물제제 및 해초추출물 시용이 배추수량에 미치는 영향)

  • Cho, Sung-Hyun;Park, Tae-Hurn
    • Journal of the Korea Organic Resources Recycling Association
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    • v.10 no.4
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    • pp.81-85
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    • 2002
  • This study was carried out to investigate the effect of organic fertilizer(OM-1 : $300kgha^{-1}$, OM-2 : $600kgha^{-1}$), microorganism(ML : liquid form, MP : powder form) and seaweed extract ; ascophyllum nodosum(AF : foliar application, AI ; irrigation) on the growth and yield of the chinese cabbage. At the treatment of organic fertilizer OM-2 have appeared the best yield. According to the application of microorganism appeared certainly increasing yield of cabbage by application of powder form. The excess application of organic fertilizer OM-2 should not be occurred fertilizer damages and increased on the growth and yield by use of microorganism, In application of sewweed extract treatment, the cabbage yield increased by irrigation method.

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Effects of Composted Liquid Manure and Microbial Agent Types on Growth and Thatch Decomposing of Creeping Bentgrass (가축분뇨발효액비와 미생물제제 종류별 시용에 따른 크리핑 벤트그래스의 생육과 토양중 대취분해에 미치는 영향)

  • Lim, Ji Yeon;Ham, Suon Kyu;Lee, Yeong Min;Cha, Young Gi
    • Journal of the Korea Organic Resources Recycling Association
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    • v.22 no.4
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    • pp.54-61
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    • 2014
  • This study was conducted to investigate the effect of Actinomyces sp. and Bacillus sp., United States granular microorganisms and Japan granular microorganisms on turfgrass growth and thatch decomposing of creeping bentgrass in golf course by measuring turf color index, chlorophyll index, thatch content of soil, root length, turf density and chemical properties and thatch content of soil. Fertilizer treatment was designed as follows; control(CF; compound fertilizer), microorganism medium(M; CF+M), microorganism medium and livestock manure fertilizer(M-L; CF+M+LMF), microorganism medium, livestock manure fertilizer and amino acid liquid fertilizer(M-L-A; MM+LMF+ALF), United States granular microorganisms(USGM; CF+USGM), Japan granular microorganisms(CF+JGM). Soil properties investigated after experiment was scarcely affected by applied fertilizers in root zone of creeping bentgrass. The turf color index and chlorophyll index of M, M-L, M-L-A, USGM, JGM treatment were higher than those of CF. The turfgrass root in M-L treatment was longer than others. The thatch content of soil in M treatment was longer than others. The thatch content of M was decreased than that of CF by 6.8%. These was suggested that application of M induced the development of quality and growth of creeping bentgrass by assisting turfgrass growth and thatch decomposing.

Studies on the Preservation of Soybean Paste (Part 1) Inhibition of the Growth of Film-forming Yeast (된장의 변질방지에 관한 연구 (제1보) 산막효모의 발육억제)

  • 차원섭
    • Microbiology and Biotechnology Letters
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    • v.6 no.2
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    • pp.81-84
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    • 1978
  • Film-forming yeasts were isolated from deteriolated soybean paste and after identification factors affected on the growth of the organisms were studied to provide information on the protection of the product from deteriolation. The isolated yeasts were identified as Pichia membranaefaciens. The yeasts could grow within the temperature limit of 10$^{\circ}C$ and 68$^{\circ}C$ with optimum at 25$^{\circ}C$. The optimum pH was 6.0 and the growth was reduced in order at 7.0, 5.0, 8.0 and 4.0. The maximum concentration of sodium chloride in Hayduck solution was 15% above which the yeasts ceased to grow.

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Turfgrass Probiotics Reduce Population of Large Patch Pathogen and Improve Growth of Zoysiagrass (유용미생물 처리에 따른 들잔디 재배지의 갈색퍼짐병 병원균 감소와 잔디생육 촉진 효과)

  • Bae, Eun-Ji;Cheon, Chang Wook;Hong, A-Reum;Lee, Kwang-Soo;Kwak, Youn-Sig
    • Weed & Turfgrass Science
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    • v.6 no.3
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    • pp.249-261
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    • 2017
  • To prevent large patch disease, caused by Rhizoctonia solani AG-2-2, in zoysiagrass a fungicide, Tebuconazole and three microbial agents Streptomyces sp. Burkholderia sp. and Streptomyces sp. S8 were applied in commercial turfgrass cultivation field in Sanchung, Gyeongnam, Korea. All treatments showed 50% reduced the pathogen population in thatch layer throughout the yearly cultivation period. Not only reduced the pathogen population, Tebuconazole, Streptomyces sp. Burkholderia sp. and Streptomyces sp. S8 treatment also enhanced turfgrass growth, chlorophyll and proline content. Malondialdehyde contents in each treatment was reduced from 6.2~28.9% when compared with the control. Taken together, reduction of pathogen population in soil lowered the disease incidence or severity, and allowed the turfgrass developed as normal condition. The results suggested that the selected microbial agents may use as biological control and growth promotion agents for the Zoysia turfgrass.

Isolation and Characterization of Thermophilic Microorganism Producing Starch-hydrolyze Enzyme (한국 토양으로부터 전분가수분해효소를 생산하는 고온성 균주의 선별과 동정)

  • Choi, Wonseok;Bai, Dong-Hoon
    • Food Engineering Progress
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    • v.14 no.1
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    • pp.7-13
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    • 2010
  • A thermophilic microorganism, which is able to hydrolyze starch, was isolated from soil and compost in Korea. It was Gram-positive, rod-shaped, catalase positive, nonmotile, glucose and mannitol fermentative, xylose oxidative, and spore forming microorganism. It also has an ability to hydrolyze casein and gelatin. The color of colony was yellowish white. The sequence of 16S rDNA of strain 2719 showed 99.5% sequence homology with the sequence of 16S rDNA of Bacillus thermoglucosidasius. On the basis of biochemical and physiological properties and phylogenetic analysis, the isolated strain was named as Bacillus thermoglucosidasius 2719.

Growth of Creeping Bentgrass by Application of Compound Fertilizer Containing Microbes (미생물 함유 복합비료 시비에 따른 크리핑 벤트그래스의 생육)

  • Kim, Young-Sun;Lee, Chang-Eun;Ham, Soun-Kyu;Lee, Geung-Joo
    • Weed & Turfgrass Science
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    • v.5 no.1
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    • pp.42-50
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    • 2016
  • Superintendents have been used microbial fertilizers to improve turfgrass growth and quality and to decrease turfgrass diseases in golf course. This study was conducted to investigate the effects of compound fertilizer containing microbe (MF) on the growth and quality of creeping bentgrass with turf color index (TCI), chlorophyll index (ChI), root length, turfgrass density, clipping yield and nutrient content. Treatments were designed as follows; non-fertilizer (NF), compound fertilizer (21-17-17; CF) as control, compound fertilizer (14-6-17) containing microbe. In pot experiment, TCI and ChI of creeping bentgrass in MF plot were similar to those in CF. But clipping dry weight of MF plot increased by 39.1% compared to that of CF plot. At field experiment applied with MF treatment, TCI, ChI, root length, and nutrient content and uptake of creeping bentgrass were similar to those with CF treatment, but turfgrass density with MF higher about 7.9-15.8% than with CF. These results indicated that the application of MF improved growth and quality of creeping bentgrass by enhancing clipping yield and shoot number.

Characteristics of microorganism isolated from Cotton Waste Media for the Oyster Mushroom Cultivation (느타리버섯 균상재배 중 배지에서 분리한 미생물의 특성)

  • Lee, Chan-Jung;Jhune, Chang-Sung;Cheong, Jong-Chun;Oh, Jin-A;Han, Hye-Su;Um, Na-Na
    • The Korean Journal of Mycology
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    • v.38 no.2
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    • pp.120-124
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    • 2010
  • This study was carried out to investigate interaction between mushroom mycelium and microorganisms in cotton waste media for the shelf cultivation of oyster mushroom. Two oyster mushroom farms was selected for this experiment. One was good mushroom farm (farmhouse I) and the other failed mushroom farm (farmhouse II). In farmhouse I, the inhibition microorganisms were higher toward the end of growth stage than the early stage, but the result of farmhouse II was opposite. Effects of the mycelium growth on plate culture showed same results on mushrooms as the earlier one. And the mycelium growth was influenced by secretory materials of microorganisms. Among of the isolates, Only few microorganism had inhibitory effects on either P. tolaasii or T. harzianum causing the disease of oyster mushrooms. But more microorganisms had inhibition effects on P. agarici.

Methanol을 원료로 한 미생물 달백질 생산의 최적화

  • 김정희;유두영
    • Proceedings of the Korean Society for Applied Microbiology Conference
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    • 1975.12a
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    • pp.180.2-180
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    • 1975
  • Methanol을 유일한 탄소원으로 하여 생육할 수 있는 박테리아, Methanomonas sp.를 국내에서 토양으로부터 분리하였다. 이 군주를 이용하여 미생물 단백 생산을 위하여 연속 발효 방법을 연구 검토하였다. 연속 발효 조작을 이용하여 미생물 균체 생산율을 최대로 할 수 있는 긍정의 최적화가 연구되었다. 이에 필요한 이론과 실험방법 그리고 실험 결과가 검토될 것이다.

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Clostridium acetobutylicum의 내산성 기작

  • 김병홍
    • The Microorganisms and Industry
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    • v.11 no.1
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    • pp.3-7
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    • 1985
  • 미생물은 고등생물과 그들이 생육하는 환경을 조절할 수 있는 능력이 제한되어 있다. 환경 변화에 따라 자신을 적응시킬 수 있는 능력이 있어야 끊임없이 변하는 환경에서 살아 남을 수 있고 다른 미생물과의 경재에서 이길 수 있다. 온도, 삼투압, 영양물질의 온도, 수소 ion농도는 자연계에서 짧은 시간에 넓은 폭으로 변하며 미생물에서 energy 대사의 중심이 되는 proton motive force를 이루는 proton gradient (.DELTA.pH)의 크기를 결정한는 중요한 환경인자이다.

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