• The Plant Pathology Journal
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• 제22권3호
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• pp.295-302
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• 2006

The present study addressed the efficacy of nanosized silica-silver for controlling plant pathogenic microorganisms. The nanosized silica-silver consisted of nano-silver combined with silica molecules and water soluble polymer, prepared by exposing a solution including silver salt, silicate and water soluble polymer to radioactive rays. The nanosized silica-silver showed antifungal activity against the tested phytopathogenic fungi at 3.0 ppm with varied degrees. In contrast, a number of beneficial bacteria or plant pathogenic bacteria were not significantly affected at 10 ppm level but completely inhibited by 100 ppm of nanosized silicasilver. Among the tested plant pathogenic fungi, the new product effectively controlled powdery mildews of pumpkin at 0.3 ppm in both field and greenhouse tests. The pathogens disappeared from the infected leaves 3 days after spray and the plants remained healthy thereafter. Our results suggested that the product developed in this study was effective in controlling various plant fungal diseases.

• 약학회지
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• 제48권1호
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• pp.70-74
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• 2004

Bacillus polyfermenticus SCD which is commonly called as Bisroot (equation omitted) has been appropriately used for the treatment of long-term intestinal disorder's. This strain strongly inhibited against methicillin resistance Staphylococcus aureus (MRSA) and various pathogenic microorganisms. Effects of B. polyfermentius SCD administration on death rates and egg-laying rates in two groups of hens were investigated. This strain decreased the death rates of two groups by 16.26％ and 11.72％, respectively. Also this strain increased the egg-laying rates of those 2.74％ and 2.66％, respectively Clinical tests of B. polyfermenticus SCD administration to healthy adults showed not adverse effects but decreased glyceride concentration from 154.52 mg/dl to 135.41 mg/dl after two week administrations.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.15-18
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• 2003

Contemporary biological control system includes the use of fungi to control weeds in agricultural ecosystems and forests. Fungal pathogens of weeds that are highly virulent and specific to target weeds, and able to be produced massively by artificial culture could be applied like chemical herbicides over the weeds.(중략)

• 한국식품위생안전성학회지
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• 제21권1호
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• pp.36-40
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• 2006

온천수에는 각종 무기물이 풍부하게 함유되어 있으며 특히 2가 이온들이 많이 들어있고 살균력을 갖춘 유황 성분이 있어, 식중독 및 병원성 미생물의 증식을 억제할 수 있는 가능성이 있다. 온천수의 식중독 및 병원성 미생물에 대한 억제 효과를 시험하기 위하여 식중독 미생물인 Bacillus cereus, Staphylococcus aureus 및 Escherichia coli, 피부병 원인균인 Candida albicans와 Trichophyton mentogrophytes, 위장병 원인균인 Helicobacter pylori을 대상으로 시험하였다. 본 실험에 사용한 온천수는 먹는물 수질기준에 따라 분석한 결과 불소함량이 기준치 1.5mg/L보다 높은 14.1 mg/L로 먹는물 수질기준에 적합하지 않으나 그 외 항목은 먹는물 수질기준에 적합하였다. 몇 가지 식중독 미생물이 온천수에서 생존하는 양상을 관찰한 결과 S. aureus 및 E. coli의 생존에 대해서는 별 영향을 미치지 않았으나, B. cereus의 균수는 감소시키는데 이는 온천수의 온도($41^{\circ}C$와 관계있는 것으로 판단되었다. C. albicans와 T. mentagrophytes등 피부병균과 위염 원인균(H. pylori)에 대해서도 온천수는 뚜렷한 증식 억제효과를 보이지 않으나 T. mentagrophytes는 온도에 영향이 있음을 확인하였다. 이상의 결과를 종합할 때 온천수는 식중독균이나 피부질환 혹은 위염 원인균에 뚜렷한 억제 효과는 나타나지 않으나 일부 고온($41^{\circ}C$)에 의한 균수의 감소 효과는 인정 되었다.

• 대한수의사회지
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• 제38권9호
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• pp.781-800
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• 2002

Recently, biological weapons (BWs) prepared with pathogenic microorganisms, toxins and biological vectors have been used maliciously for biological warfare, bioterrorism and/or agroterrorism by hostile countries and terrorists. In this review, historical background of disease and malicious use of BWs pathogenicity of microorganisms, advanced methodology involved in laboratory diagnosis, and prevention and control of anthrax (Bacillus anthracis), plague (Yersinia pseudotuberculosis subs. pestis), glanders (Burkholderia mallei), and smallpox (Variola virus) which have been abused for biological warfare or bioterrorism were discussed. In addition, the pathogenicity of microorganisms and the methodology needed to diagnose and control 6 diseases identified by WHO/CDC, ie., smallpox, inhalation anthrax, pneumonic plague, botulism, tularemia, and hemorrhagic fevers that would wreak havoc if terrorists successfully disseminated the germs by air were described.

• 한국동물위생학회지
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• 제38권3호
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• pp.167-171
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• 2015

Pathogenic microorganisms were monitored on the chicken carcasses in slaughterhouse of Jeonbuk area. It was conducted to evaluate the microbiological quality on 204 chicken carcasses. Staphylococcus (S.) aureus was isolated in largest number and its ration was 41.2%, Salmonella spp. 6.4%, Campylobacter (C.)jejuni 7.4%, C. coli 7.4%. Serotype of Salmonella (S.) spp. was identified as S. Infantis 46.1%, S. Enteritidis 23.1%, S. Typhimurium 7.7%, S. Montevideo 7.7%. In breed chickens, Salmonella spp. was detected broiler 4.1%, white semi-broiler 8.0% Korean native chicken 12.0%. C. jejuni was isolated broiler 7.4%, white semi-broiler 12.0%, Korean native chicken 0%, C. coli, broiler 7.4%, white semi-broiler 0%, Korean native chicken 18.1% and S. aureus, broiler 38.8%, white semi-broiler 40.0%, Korean native chicken 51.5%.

• 생약학회지
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• 제42권4호
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• pp.336-340
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• 2011

The aim of this study was to investigate the possible utilization of Zanthoxylum schinifolium as a source of antimicrobial agents. The antimicrobial effects of Zanthoxylum schinifolium extracts were investigated against Acinetobacter baumannii, which is a multi-drug resistant pathogen, and 5 other pathogenic microorganisms. The hexane extract of Zanthoxylum schinifolium was more effective than the ethyl acetate, n-butanol and methanol extracts which were active against Acinetobacter baumannii 25, with minimum inhibitory concentrations(MIC) ranging from 0.8 mg/ml to 1.6 mg/ml. Tetracycline had no effect on Acinetobacter baumanniii. The hexane extract was highly active against Candida albicans IFO 6258, with an MIC of 1.5 mg/ml. In contrast, the ethyl acetate, n-butanol and methanol extracts showed no activity against the 5 pathogenic microorganisms. Furthermore, a combination of hexane extract and ethyl acetate extract was significantly more active against the 5 Acinetobacter baumannii strains than n-butanol and methanol. These results suggest that Zanthoxylum schinifolium extracts have great potential as antimicrobial compounds against multi-drug resistant pathogens, and further studies are warranted.

• Journal of Microbiology and Biotechnology
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• 제10권4호
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• pp.488-495
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• 2000

Strain SA72 was isolated from Jeot-gal and identified as producer of a bacteriocin, which showed some bactericidal activity against Lactobacillus delbrueckii ATCC 4797. Strain SA72 was tentatively identified as Lactococcus lactis according to the AOI test. Lactococcus lactis SA72 showed a broad spectrum of microorganisms, tested by the modified deferred method. The activity of lacticion SA72, named tentatively as a bacteriocin produced by Lactococcus lactis SA72, was detected during the mid-lon growth phase, reached a maximum during the early stationary phase, and then declined after the late stationary phase. Lacticin SA72 also showed a relatively broad spectrum of activity against non-pathogenic and pathogenic microorganisms when assessed by the spot-on-lawn method. Its anitimicrobial activity on sensitive indicator cells disappeared completely by protease XIV treatment. The inhibitory activity of lacticin SA72 remained after treatment for 15 min at $121^{\circ}C$, 문 was stable in a pH range of 2.0 to 9.0 and all organic solvents examined. It demonstrated a typical bactericidal mode of inhibition against Lactobacillus delbrueckii ATCC 4797. The apparent molecular mass of lacticin SA72 was in the region of 3-3.5 kDa, determined by SDS-PAGE.

• Preventive Nutrition and Food Science
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• 제7권4호
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• pp.386-396
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• 2002

This study screened 76 Korean traditional patent medicines and 58 medicinal herbs for antimicrobial activity against pathogenic bacteria. Among the prescriptions methanol and hot water extracts of Samsoum, Chujunghwang-yont'ang, and Sashinhwan showed antimicrobial activities against E. coli and Chujunghwang-yont'ang showed the strongest antimicrobial activity. Among the medicinal herbs, hot water and methanol extracts of Terminalia chebula, Caesalpinia sappan, and Coptis chinensis showed the strongest antimicrobial activities against Escherichia coli O157, Staphylococcus aureus, Shigella flexnery, Shigella sonnei and Salmonella typhimurium. An interesting characteristic of the traditional medicines such as Samsoum, Chujunghwang-yont'ang, and Sashinhwan was that both methanol and hot water extracts were active. Chujunghwang-yont'ang exhibited the strongest antimicrobial activities against the microorganisms tested. Water and methanol extracts of Terminalia chebula, Caesalpinia sappan, and Coptis chinensis showed the strong of inhibitory effects on the growth of all microorganisms tested.

• 한국축산식품학회지
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• 제37권4호
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• pp.477-485
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• 2017

Novel, effective methods to control and prevent spoilage and contamination by pathogenic microorganisms in meat and meat products are in constant demand. Non-thermal pasteurization is an ideal method for the preservation of meat and meat products because it does not use heat during the pasteurization process. Atmospheric pressure cold plasma (APCP) is a new technology for the non-thermal pasteurization of meat and meat products. Several recent studies have shown that APCP treatment reduces the number of pathogenic microorganisms in meat and meat products. Furthermore, APCP treatment can be used to generate nitrite, which is an essential component of the curing process. Here, we introduce the effectiveness of APCP treatment as a pasteurization method and/or curing process for use in the meat and meat product processing industry.