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UV-C, VUV, Ozone 및 Gamma ray에 의한 병원성 미생물의 불활성화
이오미 ( O Mi Lee ),김해연 ( Hae Yeon Kim ),김태훈 ( Tae Hun Kim ),이면주 ( Myun Joo Lee ),유승호 ( Seung Ho Yu ) 한국공업화학회 2009 응용화학 Vol.13 No.1
Batch kinetic experiments were conducted to evaluate the disinfection efficiencies of the microorganisms by UV-C, VUV, ozone and gamma radiation. The disinfection efficiency of S. choleraesuis after UV-C irradiation was 99.06% at 5 min exposure. The disinfection efficiency of E. coli K12 after VUV irradiation was 98.88% at 3 min. The ozone disinfection efficiency was 57.81% at 1 min for S. aureus. The effect of the electron beam irradiation was 99.70% at 2kGy for B. subtilis spores. The results of SEM and TEM indicated that gamma radiation showed more complete destruction of the wall of the microorganisms than other AOPs.
Acetobacter sp. A9에서 셀룰로오스 생산량이 높은 변이주 선별
이오미 ( O Mi Lee ),손홍주 ( Hong Joo Son ),이상준 ( Sang Joon Lee ) 한국환경생물학회 2011 환경생물 : 환경생물학회지 Vol.29 No.4
The mutant strain M6 derived from Acetobacter sp. A9, which produces high levels of the bacterial cellulose derived by random mutagenesis with N methyl N′ nitro N nitrosoguanidine or UV treatment, was selected by a Hestrin and Schramm medium (HSB) plate assay. The characterization of the cellulose production was studied in flask culture to improve the productivity of bacterial cellulose by Acetobacter sp. A9 and mutant strain M6. The yield of cellulose production was superior to mutant M6 than Acetobacter sp. A9. Cellulose was produced 0.12 g L 1 by Acetobacter sp. A9 at HS medium and the mutant M6 produced the cellulose 6.95 g L 1 at HS medium. Strain M6 produced less amount of gluconic acid than A9, thus showing that cellulose production is negatively relted with the gluconic acid production.
필치가 혈중 알코올농도와 간세포내 알코올대사 효소 활성에 미치는 영향
이오미(O Mi Lee),예충민(Choong Min Ye),최병철(Byung Chul Choi),이지윤(Ji Yun Lee),강혜정(Hye Jeong Kang),최윤경(Yun Kyung Choi),김창종(Chang Jong Kim),심상수(Sang Soo Sim) 대한약학회 2005 약학회지 Vol.49 No.4
To investigate the effect of Feelch on alcohol metabolism, we measured both blood alcohol concentration in human and hepatic alcohol metabolizing enzyme activity in rats. The blood alcohol concentration in Feelch-ingested group was significantly lower than that in water-ingested group at 0, 40, and 80 minute after alcohol intake. The blood alcohol concentration between male and female taken 300 ㎖ of 21% alcohol showed the significant differences; the peak value of blood alcohol concentration in male and female were 0.0837±0.014% and 0.108±0.018%, respectively, In alcohol-fed rats, aldehyde dehydrogenase (ALDH) activity was significantly increased, whereas alcohol dehydrogenase (ADH) activity was not changed. In both Feelch-fed group and Feelch plus alcohol-fed group, ADH and ALDH activity were significantly increased as compared with each control group. Feelch decreased phospholipase A₂ activity and lipid peroxidation in hepatic tissue and activities of serum aminotransferases as compared with control. These results suggest that Feelch may have a hepato-protective effects and this is likely due to lower blood alcohol concentration via the increment of hepatic ADH and ALDH activity.
회분식 발효조에서 미생물을 이용한 라군 슬러지 질산염 폐액의 탈질 공정 평가
오종혁,이오미,황두성,최윤동,황성태,조병렬,박진호,Oh Jong-Hyeok,Lee O-Mi,Hwang Doo-Seong,Choi Yun-Dong,Hwang Sung-Tae,Jo Byung-Real,Park Jin-Ho 한국방사성폐기물학회 2006 방사성폐기물학회지 Vol.4 No.2
It is a serious task to the decommissioning of the uranium conversion plant that the demolition of the lagoon sludge. The main component of the sludge is ammonium nitrate and that is the very explosive material. Therefore, the bio-denitrification is a attractive process to remove the nitrate. In this work, some process variables was tested such as incubation temperature, nitrate concentration, electron donor, C/N ratio, seeding ratio, and pH with an anaerobic bacteria as Pseudomonas halodenitrificans. The results would be used as basic data to the continuous bio-denitrification process.
우리나라 식물검역 격리재배 시스템과 2005-2012년 실적보고
이시원(Siwon Lee),박정안(Jungan Park),이오미(O-Mi Lee),신용길(Yong-Gil Shin) 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.4
우리나라의 격리재배는 102속, 약 250여종의 식물에 대해 실시하고 있으며, 직접경검법, 배양법, 선택배지, 생리생화학, ELISA 및 PCR 검사방법을 사용한다. 2005-2012년, 우리나라에서 수행된 격리재배는 총 8,307건이며 이중 구근류가 5,165건(62.2%)로 가장 많았고, 묘목류가 2,119건(25.0%), 종자 796건(9.6%), 삽수 150건(1.8%), 접수 70건(0.8%) 및 기타 7건(0.1%) 이었다. 불합격 사례는 총 413건으로 약 4.97%였고, 발견된 병의 종류는 총 47종으로 나타났다. 종류별로는 바이러스가 27종으로 가장 많은 수를 차지했으며, 곰팡이 16종, 바이로이드 1종, Chromalveolata 1종 및 기타 2종으로 나타났다. 가장 많은 검역건을 올린 병원체는 Arabis mosaic virus (77건), Tobacco rattle virus (70건), Lily symptomless virus (46건), Penicillium expansum (46건)이다. In Korea, isolated cultivation has been implemented for 102 genera, including about 250 species, each of which has underwent microscopic inspection, cultivation of bacteria in selective medium, analysis of physiology and biochemistry, enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR). The number of isolated microorganisms was 8,307 in the period of 2005-2012, and bulbs and tubers had the greatest diversity of microorganisms, of 5,165 (62.2%), followed by 2,119 (25.0%) sapling, 796 (9.6%) seed, 150 (1.8%) cutting slip, 70 (0.8%) branch graft and 7 (0.1%). The number of cases which were disqualified were 413 (4.97%), after the detection of 47 disease causing species of microorganism. Viruses predominated, with 27 species, followed by 16 fungi, a viroid, a Chromalveolata and 2 further species. Top on the list of detection was Arabis mosaic virus (77 cases), followed by Tobacco rattle virus (70 cases), Lily symptomless virus (46 cases) and Penicillium expansum (46 cases).