• Journal of Wetlands Research
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• v.13 no.1
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• pp.117-127
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• 2011

The aim of this study was to examine the fate of tetracycline resistant bacteria (TRB) and tetracycline resistant genes (TRG) according to the spatial and operational wastewater treatment factors. As part of the effort, TRB and TRG of water samples at each unit processes of three different wastewater treatment plants (WWTPs) were analyzed over seven month study periods. With the data about different spatial and operating conditions of these WWTPs, TRB and TRGs, principal component analysis (PCA) was performed to find out any general correlation trend. Based on the statistic analysis results, the extent of TRB concentration in the activated sludge (TRBAS) is much related to the TRB concentration in primary clarifier effluent (TRBPE). Also, the study results indicated that the fate of TRB and TRG are significantly affected by the SRT variations.

• Journal of Wetlands Research
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• v.13 no.2
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• pp.181-187
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• 2011

The overall objective of this study is to develop the engineering-friendly-methodology which can investigate the fate of antibiotic resistance in environment microbial community. For this purpose, effective concentration (EC) concept was adopted with cultural based method which is currently used in engineering practice. When a tetracyline antibiotic was present as selective pressure agent among microbial community, activated sludge, the $EC_{50}$ and/or $EC_{90}$ of tetracycline in microbial community were statistically increased compared to control, especially higher growth rate and organic loading conditions of SBRs. Therefore, these results strongly suggested that the continuous monitoring of EC in microbial community can be used for characterizing the fate of tetracycline resistance community in environmental samples.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2002.10a
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• pp.102-103
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• 2002

옥시테트라싸이클린(OTC)은 테트라사이클린계 항균물질로 비브리오병, 지느러미 붉음병, 인린 병, 아가미 썩음병 등과 같은 수산동물 질병 치료에 많이 사용되고 있는 항균제이다. 어류의 질병을 치료하기 위해 투여된 항생제에 대하여 어체내의 잔류농도에 대한 과학적 규명없이 관습적이고 반복적으로 사용되고 있어 과잉투여에 의한 경제적 손실, 과소투여에 의한 내성균의 발현, 양식 어류 체내의 항생물질 잔류 농도등 항생제 사용 문제는 양식산업뿐 아니라 수산가공 입장에서도 매우 중요한 현안으로 대두되고 있다. (중략)