• Title/Summary/Keyword: anti-fungal

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Insights into test methods of biocides in Sanitary Sealants (내곰팡이성 실란트의 방균 성능 평가방법에 대한 고찰)

  • Seo, Yeonwon;Jung, Jinyoung;Bae, Kisun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.11a
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    • pp.170-172
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    • 2013
  • To be applied to a humid environment such as bathroom and kitchen, sealant should have good adhesion, tensile strength, etc., it also have the resistance to fungal contamination from the environment. It is important to select right material for sanitary sealing application in order to prevent premature discoloration and fungal activities. Especially for high humidity conditions, it is crucial to have longer mildew and fungal resistance. In this article, we intended to give guide lines for developing right sanitary sealing material and practical test method for evaluating anti-fungal performances reflecting Korean residential life style.

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Isolation of Rhizobacteria in Jeju Island Showing Anti-Fungal Effect against Fungal Plant Pathogens

  • Lee, Chung-Sun;Kim, Ki-Deok;Hyun, Jae-Wook;Jeun, Yong-Chull
    • Mycobiology
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    • v.31 no.4
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    • pp.251-254
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    • 2003
  • To select active bacterial strains to control plant diseases, 57 bacterial strains were isolated from the rhizosphere of the plants growing in various areas such as coast, middle and top of Halla Mountain in Jeju Island. Anti-fungal effect of isolated bactrial strains was tested in vitro by incubating in potato dextrose agar with isolates of four fungal plant pathogens Rhizoctonia solani, Fusarium oxysporum, Colletotrichum gloeosporioides and C. orbiculare, respectively. Thirty-four bacterial strains inhibited the hyphal growth of the plant pathogens, from which 17 strains inhibited one of the tested fungi, 10 strains two fungi, six strains three and a strain TRL2-3 inhibited all of the tested fungi. Some bacterial strains could inhibit weakly the hyphal growth of the plant pathogens, whereas some did very strongly with apparent inhibition zone between the plant pathogens and bacterial strains indicating the unfavorable condition for hyphal growth. Although there was no apparent inhibition zone, some bacterial strains showed a strong suppression of hyphal growth of plant pathogens. Especially, the inhibition by TRL2-3 was remarkably strong in all cases of the tested plant pathogens in this study that could be a possible candidate for biological control of various plant diseases.

Isolation and Identification of Activated Microorganisms for Biocide Development (생물농약개발을 위한 활성미생물의 분리동정에 관한 연구)

  • Lee, Jang-Hoon;Kang, Byeong-Kon;Kwon, Hyuk-Ku;Jung, Joon-Oh;Nam, Youn-Ku
    • Journal of Environmental Health Sciences
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    • v.31 no.1
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    • pp.31-38
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    • 2005
  • An anti-fungal material produced by actinomycetes was isolated from domestic soil. This actinomycetes was identified as Streptomyces albogriseus by 16S rDNA sequence. YEME (yeast extract 4 g, malt extract 10 g, glucose 4 g, D.W 1l, pH 7.00.2) medium was used for production of anti-fungal materials. S. albogriseus was cultured in a shaking incubator for 2 weeks at 150 rpm and $25^{\circ}C$. An anti-fungal material produced by S. albogriseus was identified at 340 nm by uv/vis- spectrometer and it showed powerful anti-fungal activity. This is the first report that secondary metabolite produced by S. albogriseus showed an activity against phytopathogenic fungi such as Collectrichum coccodes, Botrytis cinerea, Cladosporium cucumerinum, Didymella bryoniae.

In vitro control of plant pathogens by using anti-fungal hydroxy fatty acid obtained from microbial bioconversion of linolenic acid

  • Kang, Sun-Chul;Bajpai, Vivek K.;Kim, Hak-Ryul
    • 한국생물공학회:학술대회논문집
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    • 2005.04a
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    • pp.309-310
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    • 2005
  • Bioconverted linolenic acid (bLNA) obtained from linolenic acid by Pseudomonas aeruginosa PR3, showed anti-fungal activity against plant pathogens such as B. cinerea, F. oxysporum, F. solani, P. capsici and C. capsici. The oil sample also showed anti-fungal activity with MIC values, ranging from >250 to >1,000 ${\mu}g/ml$. Varied concentrations of bLNA had a great potential effect on spore germination of different fungi.

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In vivo control of phytopathogens by using omega-3 fatty acid docosahexaenoic acid (DHA) bioconverted by Pseudomonas aeruginosa PR3

  • Kang, Sun-Chul;Kim, Hak-Ryul;Shin, Seung-Yong;Bajpai, Vivek K.
    • 한국생물공학회:학술대회논문집
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    • 2005.10a
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    • pp.497-499
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    • 2005
  • Bioconverted hydroxy fatty acid, docosahexaenoic (bDHA) obtained from the microbial conversion by Pseudomonas aeruginosa PR3 was evaluated for its in vivo anti-fungal activity. bDHA showed great potential of anti-fungal activity against phytopathogenic fungi tested in this study. bDHA at the concentration of 500 ${\mu}g/ml.$ showed remarkable anti-fungal activity against all the fungus tested.

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Design and Performance Test of Fungal Aerosol Generator using Vibration Method (진동 방식을 이용한 곰팡이 공기 부유화 장치의 설계 및 성능 평가)

  • Ahn, Ji-Hye;Lee, Sang-Gu;Park, Chul Woo;Hwang, Jungho
    • Particle and aerosol research
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    • v.8 no.4
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    • pp.143-150
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    • 2012
  • Fungal particles have been known to aggravate indoor air quality. To develop fungal particle cleaning devices requires a well-controlled generator of fungal aerosol particles. In this study, a novel fungal aerosol generator was designed and tested for anti-fungal experiment. Cladosporium cladosporioides was selected as test fungal particle. After aerosolization, the number concentration and the size of particles were measured by aerodynamic particle sizer. The number concentration depended on the vibration strength and vibration period of the designed fungal aerosol generator. For the vibration strength of 10volt and the period of 10 sec (5 sec on and 5 sec off), the stable particle generation with concentration of 10#/cm3 was maintained during 35 minutes.

Fungal Taxol Extracted from Cladosporium oxysporum Induces Apoptosis in T47D Human Breast Cancer Cell Line

  • Raj, Kathamuthu Gokul;Sambantham, Shanmugam;Manikanadan, Ramar;Arulvasu, Chinnansamy;Pandi, Mohan
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.16
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    • pp.6627-6632
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    • 2014
  • Purpose: The present study concerns molecular mechanisms involved in induction of apoptosis by a fungal taxol extracted from the fungus Cladosporium oxysporum in T47D human breast cancer cells. Materials and Methods: Apoptosis-induced by the fungal taxol was assessed by MTT assay, nuclear staining, DNA fragmentation, flow cytometry and pro- as well as anti-apoptotic protein expression by Western blotting. Results: Our results showed inhibition of T47D cell proliferation with an $IC_{50}$ value of $2.5{\mu}M/ml$ after 24 h incubation. It was suggested that the extract may exert its anti-proliferative effect on human breast cancer cell line by suppressing growth, arresting through the cell cycle, increase in DNA fragmentation as well as down-regulation of the expression of NF-${\kappa}B$, Bcl-2 and Bcl-XL and up-regulation of pro-apoptotic proteins like Bax, cyt-C and caspase-3. Conclusions: We propose that the fungal taxol contributes to growth inhibition in the human breast cancer cell through apoptosis induction via a mitochondrial mediated pathway, with possible potential as an anticancer therapeutic agent.

Diversity and Geographic Distribution of Anti-cancer Higher Fungi in Korea

  • Cho, Duck-Hyun
    • Korean Journal of Plant Resources
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    • v.11
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    • pp.51-79
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    • 1998
  • Many higher fungi were collected at Korea from 1976 to 1998. They were identified and surveyed on resources with many reference books. According to the results, fungal fungi were 40 families, 90 general and 215 species. Among them , anti-cancer resources used in Korea were Ganoderma lucidum, Phellinus linteus, Agaricus brazei and Cordyceps militaris. Three species exception Agaricus brazei were distributed in Korea. All these are cultivated in Korea.

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Diversity and Geographic Distribution of Anti-cancer Higher Fungi in Korea

  • Cho, Duck-Hyun
    • Plant Resources
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    • v.2 no.1
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    • pp.31-41
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    • 1999
  • Many higher fungi were collected at Korea from 1976 to 1998. They were identified and surveyed on resources with many reference books. According to the results, fungal fungi were 40 families, 90 genera and 215 species. Among them, anti-cancer resources used in Korea were Ganoderma lucidum, Phellinus linteus, Agaricus brazei and Cordyceps militaris. Three species exception Agaricus brazei were distributed in Korea. All these are cultivated in Korea.

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The Roles of Lactic Acid Bacteria for Control of Fungal Growth and Mycotoxins (곰팡이 생육 및 곰팡이 독소 생산의 억제에 있어서의 유산균의 역할)

  • Kim, Jihoo;Lee, Heeseob
    • Journal of Life Science
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    • v.30 no.12
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    • pp.1128-1139
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    • 2020
  • Over recent years, it has become evident that food and agricultural products are easily contaminated by fungi of Aspergillus, Fusarium, and Penicillium due to rapid climate change, which is not only a global food quality concern but also a serious health concern. Owing to consumers' interest in health, resistance to preservatives such as propionic acid and sorbic acid (which have been used in the past) is increasing, so it is necessary to develop a substitute from natural materials. In this review, the role of lactic acid bacteria as a biological method for controlling the growth and toxin production of fungi was examined. According to recent studies, lactic acid bacteria effectively inhibit the growth of fungi through various metabolites such as organic acids with low molecular weight, reuterin, proteinaceous compounds, hydroxy fatty acids, and phenol compounds. Lactic acid bacteria effectively reduced mycotoxin production by fungi via adsorption of mycotoxin with lactic acid bacteria cell surface components, degradation of fungal mycotoxin, and inhibition of mycotoxin production. Lactic acid bacteria could be regarded as a potential anti-fungal and anti-mycotoxigenic material in the prevention of fungal contamination of food and agricultural products because lactic acid bacteria produce various kinds of potent metabolic compounds with anti-fungal activities.