• Korean Journal of Organic Agriculture
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• v.24 no.3
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• pp.497-510
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• 2016

This study was carried out to get basic resources for the industrial use of Lactobacillus bulgaricus SP5. The antibacterial activity of the supernatant obtained from Lactobacillus bulgaricus SP5 was tested against the pathogenic bacteria such as Escherichia coli KCCM 11234, Salmonella enteritidis KCCM 3313, Salmonella enteritidis KCCM 12021, and Salmonella typhimurium KCCM 40253. The supernatant of L. bulgaricus SP5 showed antibacterial activity against tested pathogenic bacteria. The antibacterial activity was examined after adjusting pH and heat treatment of supernatant. Heat treatment of supernatant had antibacterial activity against pathogenic bacteria at all temperature. However, pH changes showed no antibacterial activity. Antibacterial activity of the supernatant was confirmed to be due to organic acids (lactic, acetic, phosphoric, succinic, pyroglutamic, citric, malic, and formic acid).

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.8
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• pp.3517-3522
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• 2011

Contamination of public bath water by waterborne pathogens can cause disease outbreaks and contribute to background rates of disease. The aim of this study is to determine the prevalence of waterborne pathogens in public baths. A total of 30 water samples were collected from 30 different public baths in seoul, Korea. Pathogens in water samples were concentrated by 0.45 ${\mu}m$ nitrocellulose membrane filter, analyzed by both cultivation and polymerase chain reaction-reverse blot hybridization (PCR-REBA) of partial 16S rRNA gene. Various microorganisms including Escherichia coli and Shigella spp. were identified by microbiological cultivation. E. coli, Shigella spp., Salmonella spp., Pseudomonas spp. and Mycobacterium spp. were identified by PCR-REBA. Our results suggest that appropriate hygiene practice and continuous monitoring is needed for reducing health risk associated with public bath houses.

• The Science & Technology
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• v.35 no.7 s.398
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• pp.90-90
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• 2002

바다의 표면은 바람과 파도로 많은 기포가 생성되어 대기로 방출하게 된다. 이 과정에서 수중에 있는 박테리아와 바이러스 등 병원성 미생물의 전파 가능성이 우려되고 있다.

• The Science & Technology
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• v.35 no.10 s.401
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• pp.42-42
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• 2002

인간은 해로운 병원성 박테리아를 제거하기 위해 다른 종류의 박테리아를 이용하고 있는데 대표적인 음료로는 요구르트를 들 수 있다. 양식어장의 폐사피해가 늘고 있는데 이를 예방할 새로운 미생물을 찾는 일이 시급하다.

• Journal of Sericultural and Entomological Science
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• v.24 no.1
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• pp.32-38
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• 1982

The study has been carried out to investigate a possibility to control the pine needle gall midge, Thecodiplosis japonensis Uchida et Inoue, by microbial pathogens as one of the microbial control measures. The samples were collected at Kocheon-Ri in the suburbs of Suweon city where were heavily damaged by this pest. Microorganisms were isolated from the both of diseased larvae and baiting method of soil microbes. In addition to, several species of the silkworm mucardine diseases were isolated for their infectivity of these fungi to the larvae of pine needle gall midge. Six species of fungi, Aureobasidium pullulans, Ascochyta sp, Verticillium psalliotae, Streptomyces sp., and two species of Aspergillus were isolated from the galls and soils, five species of muscardine diseases, Isaria farinosa, Spicaria pracina, Oospora destructor, Aspergillus flavus and A. oryzae were also identified from the silkworm corpse collected in the silkworm rearing farmers. Total of eleven species of fungi identified from the both of the larval of pine needle gall midge and silkworm larvae were tested for their pathogenecity to the larvae of pine needle gall midge. All of eleven species of fungi identified showed a considerable infectivity to the larvae. Twenty nine different kinds of bacteria were isolated from the both of diseased larvae and infested soils through the direct planting for the larvae and streaking for the corpse. The infectivity test is in progress. However two kinds of bacteria were recognized to be pathogenic to the larvae tested.

• Journal of Korean Society of Environmental Engineers
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• v.35 no.7
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• pp.503-508
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• 2013

The aim of this study was to investigate the microbial communities in animal carcass disposal soils to examine the possible threat of pathogens from leachate. DNA extraction was performed for the soils in three carcass disposal sites located in Gyeonggi-do, Korea, and then 16S rRNA pyrosequencing was conducted to identify the microbial communities. Results indicate that, according to phylum classification, Proteobacteria (100%) was identified in soil A, Actinobacteria (66.4%) > Proteobacteria (31.1%) > Bacteriodetes (2.1%) > Acidobacteria (0.3%) in soil B, and Actinobacteria (63.1%) > Proteobacteria (36.9%) in soil C. According to genus classification, Pseudomonas was dominant in soil A (98%), Arthrobacter in soil B (68%) and C (61%). There were no detections of pathogens such as Salmonella, Campylobacter and Clostridium perfringens. However, high concentration of Ralstonia pickettii causing bacteremia was observed. Although carcass disposal soils examined in this study were not highly contaminated with pathogens, further monitoring is still needed to examine the potential threat of pathogens in leachate derived from carcass disposal sites.

• The Microorganisms and Industry
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• v.18 no.2
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• pp.42-50
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• 1992

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2005.05a
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• pp.207-211
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• 2005

시중의 정육점 및 백화점 등에서 유통 중인 10종의 돈육 원료에 대한 일반 세균수, 저온균수, 고온균, 혐기성균 및 진균류, 대장균군에 대한 미생물학적 분포와 병원성 미생물에 대한 분리${\cdot}$동정을 실시하였다. 실험결과 원료 돈육에서 중온균은 $3.9{\times}10^2{\sim}3.9{\times}10^5\;cfu/g$으로 높은 분포를 보였고, 저온균은 $1.5{\times}10^3{\sim}8.6{\times}10^2\;cfu/g$, 혐기성균은 중온균, 저온균과 유사한 분포를 보였으나 상대적으로 적게 검출되었고, 고온균은 모든 검체에서 검출되지 않았다. 대장균군 또한 모든 검체에 대해서 검출되지 않았으며, 곰팡이와 효모 등 진균류는 $3.8{\times}10^1{\sim}5.1{\times}10^2\;cfu/g$으로 검출되었다. B. cereus 는 돈육 sample B와 J에서 분리되었고, S. aureus의 경우 돈육 sample B에서만 검출되었다. B. cereus는 99.8%의 상동성을 보였고, S. aureus는 97.8%의 상동성을 보였다.

• Korean Journal of Microbiology
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• v.26 no.3
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• pp.262-269
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• 1988

In order to investigate the virulence of Y. enterocolitica isolated in Korea, all necessary experiments were done including several virulence determinating tests-autoagglutination test, calcium-dependency test, HeLa cell invasion test, Sereny test, crystal violet binding test, and electrophoresis for plasmid pattern. The obtained results are as follows: The virulent strains of Y. enterocolitica revealed positive reactions on autoagglutination test, cacium-dependency test, and drystal violet binding test, while the avirulent strains did not. A positive reaction was observed only at $37^{\circ}C$ implying that the expression of virulence is temperature-dependent. In Sereny test, the standard reference virulent strain (serotype 0:8) showed positive reactions while the virylent experimental strains (serotype 1:3, 0:9) revealed negative results, which indicates that the virulence of Y. enterocolitica in experimental animals varied according to their serotypes. Most of the virulent strains contained 36-38Mdal plasmids, but the avirulent strains did not. In addition, it was noted that autoagglutination, calcium-dependency, and crystal violet binding were related to the presence of plasmids.

• Feed Journal
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• v.2 no.8
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• pp.60-67
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• 2004

항생제는 병원성 미생물 및 그 밖의 유해한 세포의 발육 또는 기능을 억제하는 물질로써, 가축의 사료에 이러한 항생제를 첨가하여 급여하게 되면 장내에서 유해한 미생물의 증식과 발육을 억제하고 정상적인 균총을 유지함으로써 질병을 예방할 수 있으며, 과도한 장내 미생물의 증식에 의한 불필요한 영양소 손실을 막고 영양소의 소화와 흡수촉진 및 사료 섭취량을 증진시키는 등의 효과를 얻을 수 있기 때문에, 축산업에서 가축의 생산성 향상 및 질병예방을 위하여 일정수준의 항생제가 첨가된 배합사료를 급여하는 것이 일반적이었다.(중략)