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유통되는 쇠고기에서 분리한 대장균의 항생제 내성 조사,연구
김홍태 ( Hong Tae Kim ),이우원 ( Woo Won Lee ),정경태 ( Kyung Tae Jung ),이승미 ( Seung Mee Lee ),손은정 ( Eun Jung Son ),이강록 ( Gang Rok Lee ),김금향 ( Geum Hyang Kim ),이동수 ( Dong Soo Lee ),이근우 ( Keun Woo Lee ) 한국동물위생학회 2008 한국동물위생학회지 (KOJVS) Vol.31 No.1
In this study, antimicrobial resistance of E coli isolated from domestic beef on sale in Busan and Gyeongnam province was investigated from March to October 2007. A total of 600 beef samples were collected for the monitoring of antimicrobial resistance, and 92(15.3%) strains of E coli were isolated. Antimicrobial resistance test was carried out by agar disc diffusion method with 17 antimicrobials. In general, E coli isolates showed the highest antimicrobial resistance to doxycycline(73.9%), followed by tetracycline(70.7%) andcefazolin(63.0%). Then they showed higher resistance to several antimicrobials like norfloxacin(48.9%). However, They had low antimicrobial resistance to amikacin(4.3%), colistin(1.1%). Of 92 isolates, 82(89.1%) were resistant to more than 2 antimicrobials. Among 17 antimicrobials examined, tetracyclines were the most resistant, followed by cephalosporins, quinolone. The resistance was seemed to be correlated to amounts of antimicrobial use. In the result of this study, we suggest that there be need to regulate the abuse of antimicrobial on food-producing animals in Korea because the concern on antimicrobial resistant is gradually increased worldwide.
소와 돼지 도체표면에서 황색포도상구균의 분리 및 장독소 검출
이우원 ( Woo Won Lee ),정병열 ( Byeong Yeal Jung ),김상현 ( Sang Hyun Kim ),이승미 ( Seung Mi Lee ),이강록 ( Gang Rok Lee ),김금향 ( Geum Hyang Kim ),김용환 ( Yong Hwan Kim ) 한국동물위생학회 2010 한국동물위생학회지 (KOJVS) Vol.33 No.3
At the present study, it was aimed to explore the states of antimicrobial resistant Staphylococcus aureus isolates from 320 pigs and cattle carcass (160 pigs and 160 cattle) slaughtered in Busan province from March 2008 to November 2009. Among 320 samples, 26 of Staphylococcus aureus were isolated from pigs (10.6%) and cattle (5.6%). In antimicrobial susceptibility test, all of the isolates were demonstrated susceptibility to oxacillin, cefoxitin, cephalothin, vancomycin, rifampin and linezolid. But the isolates were showed resistance other antibiotics in order of penicillin (92.3%), gentamicin (76.9%), tetracycline (69.2%), erythromycin (65.4%), and clindamycin (61.5%). In case of enterotoxin production, 7.7% of 2 strains produced enterotoxin A.
이우원 ( Woo Won Lee ),손수경 ( Soo Kyeong Son ),이강록 ( Gang Rok Lee ),김금향 ( Geum Hyang Kim ),김용환 ( Yong Hwan Kim ) 한국동물위생학회 2011 한국동물위생학회지 (KOJVS) Vol.34 No.2
Garlic (Allium sativum L.) has long history of reputed value and actual use for its medicinal, antimicrobial and pesticidal properties. This study was conducted to find possible developments to natural food preservatives and natural antimicrobials from garlic extracts. The antimicrobial activities of raw garlic extract, heat, pH, temperature against pathogenic bacteria were investigated. E. coli, S. Enteritidis, L. monocytogenes, and S. aureus exhibited antimicrobial activities at 20% garlic extract, but no antimicrobial activity was seen in E. faecium. Raw garlic extract and garlic extract heated for 2 min at 95oC showed strong antimicrobial activities, but the antimicrobial activity of garlic extract heated for 10 min at 95oC was much less. The antimicrobial activities of 50% garlic extract adjusted pH 4.0~7.0 showed much the same, but the antimicrobial activities decreased at pH 8.0 or higher. The antimicrobial activities by storage -18oC of garlic extract showed much the same. When five strains were cultured for 72 hr at 35oC in the TSB containing 1~10% garlic extract, viable cell number of five strains were decreased to 100~104 CFU/ml even at 1% or 2.5% (E. faecium) after 24 hr, but later increased to 104~109 CFU/ml after 72 hr. When five strains were cultured for 21 day at 4oC in the TSB containing 1%, 2.5%, 5%, and 10% garlic extract, viable cell number of E. coli, S. Enteritidis, and S. aureus were decreased to 103, 100~102, 101~104 CFU/ml after 21 day, respectively, but L. monocytogenes and E. faecium increased to 108 and 106 CFU/ml after 21 day.