전통 주류의 미량무기원소 함량에 관한 연구

김윤성,용금찬,황선일,이성봉,문선애,김현주,서미영 한국식품영양과학회 2011 한국식품영양과학회 학술대회발표집 Vol.2011 No.10

HPLC/MS/MS를 이용한 음료류 중 인공감미료 동시분석에 관한 연구

이성봉,용금찬,황선일,김영수,정유정,서미영,이창희,성진희,윤미혜 한국식품위생안전성학회 2014 한국식품위생안전성학회지 Vol.29 No.4

A method for analysis of five artificial sweetners (sodium saccharin, aspartame, acesulfame-K,sucralose, cyclamate) in beverage samples was developed using high-performance liquid chromatography/triple quadrupolemass spectrometry (HPLC/MS/MS). The method uses a single-step dilution for sample preperation. Seperationwas achieved on a C18 column (2.1 × 150 mm, 3.5 μm) with A- 2% methanol (1 mM ammonium acetate), B-95%methanol (1 mM ammonium acetate) as mobile phase with gradient mode. The quantitation of target compounds wasperformed by external calibration in selected reaction monitorning (SRM) mode. The coefficient of determination ofcalibration curve for sodium saccharin, aspartame, acesulfame-K, sucralose and cyclamate were 0.9957, 0.9991,0.9943, 0.9982 and 0.9948, respectively. The limits of detection (LODs) and limits of quantitation (LOQs) were in therange of 0.001~0.022 mg/L and 0.004~0.073 mg/L, repectively. Recoveries for beverage samples were in the range of92.76~113.50% with RSD < 10.91%. The method has applied to the determination of the five sweetners in 102 beveragesamples. Three artificial sweetners-aspartame, acesulfame-K, sucralose were detected from 42 samples. Sodiumsaccharin and cyclamate were not detected in all samples.

경기도에서 분리한 병원성대장균의 역학적 특성 및 PFGE, 항생제 내성 연구

김경아,용금찬,정진아,허정원,허은선,박성희,최연숙,윤미혜,이정복,Kim, Kyung-A,Yong, Kum-Chan,Jeong, Jin-A,Huh, Jeong-Weon,Hur, Eun-Seon,Park, Sung-Hee,Choi, Yun-Sook,Yoon, Mi-Hye,Lee, Jong-Bok 한국미생물학회 2014 미생물학회지 Vol.50 No.4

병원성 대장균은 최근 3년간 경기도에서 발생한 학교급식식 중독의 주된 원인균으로서 그 역학적 특성을 정리하고 PFGE typing과 항생제 감수성 시험으로 분리균주의 특성을 알아보고자 하였다. 2010년부터 2012년까지 19건의 학교급식 식중독에 대한 역학조사보고서를 분석한 결과, 급식의 주된 운영방식은 직영(18건, 95%)이며, 고등학교에서 주로 발생하였다. 계절적 요인으로는 13건(65%)이 6월부터 9월에, 특히 여름방학 후 학기 초인 8월말부터 9월에 더 많이 발생하였다. 수요일(7건, 37%)과 목요일(7건, 37%)에 최초환자가 발생되어, 목요일 7건(37%) 금요일 5건(26%)에 주로 신고가 이루어 졌다. 추정위험에는 월요일(4건, 21%), 화요일(7건, 37%), 수요일(4건, 21%)에 노출되었고, 추정원인체로서 가능성이 높은 식품은 김치류가 50%(5건)를 차지하였다. 분리된 98균주는 EPEC, ETEC, EAEC, EHEC가 각각 50%, 34%, 15%, 1%이며, 항생제 감수성 시험 결과 ampicillin, nalidixic acid, sulfamethoxazole/trimethoprim, tetracycline에 대하여 각각 40%, 37%, 24%, 19%의 내성을 나타내었고, 2, 3세대 cephalosporins계, cabarpenem계, aminoglycosides계, 2세대 quinolones계 항생제에는 감수성이 있었으며, cefalotin, ampicillin/sulbactam, chloramphenicol에는 각각 29%, 25%, 6%가 중간내성을, 그리고 70%에서 한 가지 이상의 항생제에 내성이 관찰되었다. PFGE 분석결과, 57.6%의 similarity로 8개의 group과 32개의 profiles로 분류되었다. 개별적인 소규모 식중독에서 항생제 감수성과 유전자형의 연관성을 찾기가 어려웠으며, 동시에 발생한 대규모 식중독의 경우, 항생제 내성과 PFGE 유형이 매우 유사하여 동일 기원으로부터 유래한 병원성대장균에 의해 식중독 사고가 발생한 것으로 추정이 가능하였다. This study was conducted to survey the epidemiological characteristics and the isolated strains for pathogenic E. coli which was the major causative organisms for food poisoning occurred at school food services in the Gyeonggi-do area during the past three years. We investigated 19 accidents of food-borne disease outbreaks by pathogenic E. coli at school food services from 2010 to 2012. Food-borne disease outbreaks by pathogenic E. coli were usually occurred at direct management type (18 accidents, 95%) and high schools. For the seasonal factors, 13 accidents (65%) were occurred in June to September, especially the end of August and September after the summer holidays. The first patients were occurred on Wednesday (7 accidents, 37%) and Thursday (7 accidents, 37%), and they were mainly reported on Thursday (7 accidents, 37%) and Friday (5 accidents, 26%). The exposure of risk was estimated in Monday (4 accidents, 21%), Tuesday (7 accidents, 37%) and Wednesday (4 accidents, 21%), and kimchi (5 accidents, 50%) was estimated as the food of the high risk responsible for the outbreaks. 98 isolates of pathogenic E. coli consisted of PEC (50%), ETEC (34%), EAEC (15%), and EHEC (1%). The antibiotic resistance of pathogenic E. coli showed in the descending order of ampicilline (40%), nalidixic acid (37%), trimethoprim/sulfamethoxazole (24%), and tetracycline (19%). The antibiotics of second and third generation cephalosporins, cabarpenem, aminoglycosides, and second generation quinolones had antimicrobial susceptibilities and cefalotin, ampicillin/sulbactam and chloramphenicol showed medium resistance at 29%, 25%, and 6% respectively, and 70% of isolates were resistant to more than one antibiotic. By the PFGE analysis, they were classified into nine major groups and 31 profiles with 57% pattern similarity. It was very difficult to find the correlation of antimicrobial susceptibilities and genotype in the small scale-food poisoning, but the similarity of antimicrobial resistance and PFGE patterns in the large scale-food poisoning enabled the outbreaks to estimate the same pathotype of E. coli derived from identical origins.

콩나물중 benzimidazole계 농약의 추출방법과 잔류성

박준조(Jun-Jo Park),용금찬(Kum-Chan Yong),정진아(Jin-A Jeung) 한국농약과학회 2000 농약과학회지 Vol.4 No.1

2014년 경기지역에서 발생한 해외유입 홍역 바이러스의 분자역학적 특성 분석

윤희정,박포현,황선일,허정원,남수정,용금찬,윤미혜,Yun, Hee-Jeong,Park, Po-Hyun,Hwang, Sun-Il,Huh, Jeong-Weon,Nam, Soo-Jung,Yong, Kum-Chan,Yoon, Mi-Hye 한국미생물학회 2017 미생물학회지 Vol.53 No.1

Measles virus is a highly contagious, exanthematic virus, preventable by the use of an effective live-attenuated vaccine. However, measles virus remains endemic in many area of the world causing nearly 200,000 deaths per year and still a major cause of child mortality, mostly in developing countries. In March 2014, Republic of Korea was certified as a 'national measles elimination' by the WHO as a result of a high-quality case-based surveillance system and population immunity, which was achieved by a high vaccination rate (>95.0% since 1996). But, since the beginning of 2014, the Gyeonggi province has experienced a resurgence of measles cases. In this study, we investigated the characteristics of measles viruses isolated from confirmed measles in Gyeonggi province during January 1, 2014 ~ July 31, 2014, 60 isolates were obtained from 72 confirmed measles specimens. Genotypic distributions and genetic diversities of isolated measles virus were analyzed by sequencing of nucleoprotein (N) gene. 58 (96.7%) imported cases were identified. The predominant genotype was B3, which reflects the circulating measles virus in adjacent countries. The sequences of nucleoprotein (N) gene of isolated MeV were showed that the strains characterized showed the highest degree of identity (99%) with the Philippine related strains in 2013-2014. Therefore, infected traveler returning from the Philippines transmitted secondary infection in Korea. 홍역바이러스(Measles virus)는 전염성이 매우 높은 발진성 열병을 일으키는 바이러스이며, 약독화된 생백신 접종으로 충분히 예방할 수 있다. 그러나 대부분의 개발도상국에서 어린아이들의 주요 사망원인이며 해마다 20만명이 사망하는 풍토병이다. 우리나라는 1996년 이후부터 국가적으로 시행된 정기예방접종으로 인한 높은 백신 접종률(>95.0%)로 획득된 집단면역과 고도의 기술적 감시체계의 결과로 홍역이 퇴치되었으며, 2014년 3월 WHO로부터 '홍역퇴치국가'로 인증 받았다. 그러나 2014년 초부터 경기도에서 홍역환자가 다시 발생하였다. 본 연구에서는 2014년 1월부터 2014년 7월까지 경기도에서 발생한 홍역 확진 환자를 대상으로 홍역바이러스의 유행양상 및 유전형 분포양상을 분석하였다. 72건의 홍역바이러스 양성검체에서 60주의 홍역바이러스를 분리하였고, nucleoprotein(N) 유전자의 염기서열 분석을 통하여 유전형의 확인 및 유전자변이를 분석하였다. 총 60건의 홍역 확진검체를 분석한 결과 58건(96.7%)에서 B3 genotype을 확인하였다. 또한 nucleoprotein(N) 유전자 부위의 유전자 변이 분석결과, 경기도내 분리주들이 2013년에서 2014년 필리핀에서 유행한 홍역 분리주들과 99% 일치하였다. 따라서 필리핀 등에서 감염된 후 국내에 유입되어 2차 감염이 된 것으로 사료된다.

기능성 쌀의 잔류농약 및 이산화황 안전성 실태조사

이유진,박명기,김기유,박은미,강흥규,임지현,조욱현,김윤호,이선영,용금찬,윤미혜 한국식품위생안전성학회 2017 한국식품위생안전성학회지 Vol.32 No.6

This study was conducted to monitor the current status of pesticide residues and sulfur dioxide in a total of 91 functional rice products from February to October 2016. Multi class pesticide multiresidue methods of 220 pesticides was performed by the GC/ECD, GC/NPD, GC/TOF/MS, LC/PDA, and LC/FLD. As a result of analysis, the pesticides were detected in 3 samples, representing a detection rate of 3.3%. The kind of pesticides was propiconazole and isoprothiolane used for germicide in agriculture or plant growth regulator purposes. The detected levels were 0.0340~0.0566 mg/kg, which were under the MRL (Maximum Residues Limits). The contents of sulfur dioxide in 91 samples by the Monier-Williams method were not detected. Risk assessment of pesticides evaluated using human health exposure with the ratio of EDI (Estimated daily intake) to ADI (Acceptable daily intake). %ADI (the ratios of EDI to ADI) were 0.24~1.25% with safety level.

경기도내 유통 다소비 생선류의 중금속 및 셀레늄 함량

조윤식,김기철,김경아,강석호,정유정,곽신혜,이필석,이운형,모아라,용금찬,윤미혜 한국식품위생안전성학회 2017 한국식품위생안전성학회지 Vol.32 No.3

A total of 100 seafoods commonly consumed in Gyeonggi-do were investigated to determine the concentration of lead (Pb), total mercury (Hg), methyl mercury (MeHg), cadmium (Cd) and selenium (Se). Concentration of heavy metals and selenium was measured by using mercury analyzer, ICP-MS and GC-ECD. The average content (mg/kg) of heavy metals in the seafood samples was as follows; Pb 0.0915 (0.0021-0.4490), Cd 0.0084 (ND- 0.1773), and Hg 0.0412 (0.0013-0.3032). All the levels were below the recommended standards of the MFDS in Pb (0.5 mg/kg), Cd (0.2 mg/kg), Hg (0.5 mg/kg). The methylmercury was detected in the hairtail (0.0677 mg/kg) and cod (0.2941 mg/kg). After the average content of heavy metals in seafood was determined, the exposure assessment for heavy metals was conducted. Relative hazardous levels compared to PTWI were lower than the official standards of the JECFA for Pb (0.97%), Hg (3.42%) Cd (0.45%). In conclusion, the levels presented in this study are presumed to be safe for consumption.

실험동물에 대한 para-phenylenediamine을 함유하는 염모제의 피부 및 눈에 대한 시험

김정진(Jung Jin Kim),이순우(Sun Woo Lee),용금찬(Km Chan Yong) 대한약학회 1994 약학회지 Vol.38 No.5

Now para-phenylenediamine(PPDA) is generally used as component of most hairdyes because it can be used more conveniently and effectively than the others. But PPDA became known to cause side effects such as skin sensitization, contact dermatitis and eye irritation. So this study was done to restudy the safety of hairdyes containing PPDA. The results of experiment were as follows. 1. As a result of primary skin irritation test and eye irritation test in white rabbits, the solution containing 5% PPDA(in saline) were classified as weak irritant but four kinds of commercial hairdyes containing PPDA were proved not to have any irritation. 2. As a result of skin sensitization test in guinea pigs, four kinds of commercial hairdyes were classified as Class I(weak irritant) but three kinds of commercial hairdyes induced skin sensitization for guinea pig to 5% in test groups. These results indicate that the actual toxicity of commercial hairdyes(four kinds) is negligible. But based on the results of experiment, it is thought that there is possibility of some commercial hairdyes to induce skin sensititization.