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천연 추출물 첨가에 의한 생굴(Crassostrea gigas)의 식품학적 품질 유지
오도경 ( Dokyung Oh ),이도하 ( Do-ha Lee ),조두민 ( Du-min Jo ),조경진 ( Kyung-jin Cho ),박슬기 ( Seul-ki Park ),심연주 ( Yeon-ju Sim ),조정빈 ( Jeong-bin Jo ),운재호 ( Jae-ho Woon ),김영목 ( Young-mog Kim ) 한국수산과학회 2023 한국수산과학회지 Vol.56 No.6
Oysters are a highly consumed seafood throughout Korea, but they have a short shelf life because they support rapid microbial growth due to their of high moisture content and fragile muscle tissue. We examined natural food additives including lactic acid bacteria fermentation powder, rosemary extract, and lemon juice for their ability to preserve raw oyster Crassostrea gigas quality. Samples were stored at 4℃, and microbiological and physicochemical analyses were conducted. Among the natural additives tested, lemon juice was the most effective. Lemon juice was thus applied at different concentrations (50-300 ppm) to quantitatively assess its effect on total viable cell count, pH, glycogen, soluble protein, and turbidity. 200 ppm was confirmed to be optimal, and is projected to extend shelf life by 2 days compared to the control group.
오도경(Do Kyeong Oh),박철현(Cheol Hyun Park) 한국피해자학회 2016 被害者學硏究 Vol.24 No.2
This study is on sexual–harassment victimizations in public transports of the woman students(N=501) of D university in Busan, S. Korea, through a victim survey. Sample was selected with quota sampling by the distribution of departments. This data was analyzed with logistic regression technique on binary response, using SAS and SPSS. All hypotheses were inferred from lifestyle theory and routine activity theory and these hypotheses were divided into the proximity and expose with criminals, target attractiveness, and the absence of guardianships. Analysis on this data shows that these three factors, related with rational choice perspective, have some significant effects on sexual harassment victimization in public transports, but their effects is very differential in their effect sizes. Some variables of the proximity and expose with criminals and some variables of the absence of guardianships have only a small effects on sexual harassment victimization. But mainly wearing a showy and sexy dress, which is a variable of target attractiveness in sexual–harassment victimization, has a strong effect on sexual harassment victimization. Also, mainly wearing a showy and sexy dress has a stronger effect on serious sexual harassment victimizations(such as a sexual contact or grouping) than mild sexual harassment victimizations(such as a verbal harassment, a leaning, a picturing a part of body, and etc..)
HACCP 의무적용 식품 및 소규모 HACCP 제도 개선방안
이한철,박민지,오도경,김찬영,정은선,김채영,임지유,김중범,Lee, Han-Cheol,Park, Min-Ji,Oh, Do-Gyung,Kim, Chan-Yenog,Jeong, Eun-Sun,Kim, Chea-Young,Im, Ji-Yu,Kim, Jung-Beom 한국식품과학회 2022 식품과학과 산업 Vol.55 No.3
As a result of analyzing the domestic and foreign HACCP systems, advanced countries mandated HACCP system on all foods to strengthen food safety management and USA, EU and China do not apply small-scale HACCP system. Looking at the cases of food safety accidents in Korea and the non-compliance rate of HACCP certification evaluation by size, the accident rate of companies without HACCP certification was 31.2% higher than that of companies with HACCP certification. The nonconformity rate of food inspection standards was analyzed to be 89.0% higher than that of HACCP certification companies. Based on the international trend of food safety management and the frequency of food safety accidents, it is proposed to gradually expand the mandatory application of HACCP system in Korea to all foods, and to change the small-scale HACCP standard from less than 500 million Korean won or 21 employees to less than 500 million Korean won.
취약성과 무질서가 20대 청년의 범죄두려움에 미치는 효과
정태정 ( Jung Tae-jung ),오도경 ( Oh Do-kyeong ),박철현 ( Park Cheol-hyun ) 동의대학교 지방자치연구소 2017 공공정책연구 Vol.33 No.2
최근 범죄피해의 두려움에 대한 연구에 관심이 높아지고 있다. 이것은 최근 지역주민의 범죄피해의 두려움을 줄이는 것이 중요한 경찰활동의 목표가 되어가고 있기 때문이다. 이 연구는 기존 연구들이 주로 다루어 왔던 직접피해모델, 간접피해모델, 취약성모델, 무질서모델, 비공식 사회통제모델, 그리고 공식 사회통제모델들을 통해 범죄피해의 두려움이 주로 어떤 요인에서 기인하는지를 살펴본다. 이 연구의 자료는 2015년 11월 약 한달 정도의 기간 동안 부산과 대구에 거주하는 20대를 학원생(N=363)을 대상으로 설문조사한 자료이다. 이 자료에 대한 분석결과는 취약성과 지각된 무질서가 젊은이의 범죄피해의 두려움에 크게 영향을 미친다는 것을 보여준다. 다시 말해서 여성일수록, 그리고 지각된 무질서가 클수록 더 많은 범죄피해의 두려움을 느끼는 것으로 나타났다. 한편 직접적인 범죄피해경험도 약간의 영향을 미쳤지만, 이것은 폭행이나 절도와 같이 자주 발생하는 범죄에 한해서 범죄의 두려움에 유의미한 효과를 가진 것으로 나타났다. 그러나 간접피해경험이나 경찰에 대한 신뢰도는 다변량모델에서 유의미한 효과를 발견할 수 없었다. 이 결과는 지역주민의 범죄피해의 두려움을 줄이기 위해 보다 폭넓은 지역의 무질서를 제거하는 지역사회경찰활동이 필요하다는 것을 보여준다. 전체적으로 이러한 결과는 20대의 청년들의 범죄에 대한 두려움에는 취약성이 가장 큰 영향을 미치며, 그 다음으로 지각된 무질서가 큰 영향을 미친다는 것을 보여준다. Recently, many researchers are paying attention to fear of crime, because reducing fear of crime among local inhabitants is gradually becoming to an important goal of policing. The purpose of this study is finding important causes on fear of crime among 20s young people - existing models explaining the cause of fear of crime is largely divided to three models(victimization model, vulnerability model, and social control model). This study used survey data(N=363) on young people(98.6% is 20s) living in Busan and Daegu. They were interviewed for a month(Nov. 2015). Analysis on this data shows that vulnerability and disorder have significant effects on fear of crime - vulnerability is most important and disorder is second. In other words, girls feel more fear of crime and people who is perceived more disorder feel more fear of crime, too. Also, variables of girl and disorder relatively have strong effects on fear of crime, regardless of the types of crime. And this analysis shows that a direct victimization has a significant effect on fear of theft and assault crime, but no significant effects on robbery of sexual crime. This shows that a direct victimization has an effect on fear of only high-risk, but less serious, crimes, such as theft or assault. But an indirect victimization or a reliability on police and policing don`t have significant effects on fear of crime in our multi-variated model which controls some other theoretical variables. This result shows that community policing to reduce a disorder in local is needed.
갯장어(Muraenesox cinereus) 장으로부터 호기적 조건에서 분리된 미생물의 다양성 및 세포외 효소 생산능 분석에 관한 연구
이용직(Yong-Jik Lee),오도경(Do-Kyoung Oh),김혜원(Hye Won Kim),남개원(Gae-Won Nam),손재학(Jae Hak Sohn),이한승(Han-Seung Lee),신기선(Kee-Sun Shin),이상재(Sang-Jae Lee) 한국생명과학회 2019 생명과학회지 Vol.29 No.2
국내 삼천포 및 서천에서 채집한 갯장어(Muraenesox cinereus)의 장내기관으로부터 분리된 미생물들의 다양성 및 특성에 관하여 조사하였다. 장내 미생물의 순수 분리를 위하여 marine agar 배지를 사용하였으며 37℃에서 호기적으로 배양하였다. 순수 분리 후, 49 균주를 분리하였으며 16S rRNA 염기서열 분석 결과를 바탕으로 계통학적 분석을 실시한 결과, 3문, 13과, 14속, 34종으로 구성되어 있는 것을 확인하였다. 특히, Proteobacteria 문은 83.7%의 분포를 나타내었으며 8과, 8속, 26종으로 Aeromonadaceae, Pseudoalteromonadaceae, Shewanellaceae, Enterobacteriaceae, Morganellaceae, Moraxellaceae, Pseudomonadaceae와 Vibrionaceae로 분포하는 것을 확인하였다. 그리고 분리한 균주들이 amylase, lipase, protease와 같은 산업적으로 유용한 효소를 생산하는지 확인하기 위하여 효소 활성 평가를 실시하였으며, 39 균주가 최소 한 종류 이상의 효소 활성을 가지고 있는 것을 확인하였다. 특히 Aeromonas 속의 균주들은 테스트한 모든 효소의 활성을 나타내는 것을 확인하였다. 이러한 결과는 본 연구를 통하여 분리한 미생물들의 산업적 활용 가능성을 나타내었다. 그러므로 이번 연구는 국내 유전자원 확보 및 갯장어의 장내마이크로비옴의 과학적 지식 확장에 도움이 될 것으로 생각된다. This research confirmed the diversity and characterization of gut microorganisms isolated from the intestinal organs of Muraenesox cinereus, collected on the Samcheonpo Coast and Seocheon Coast in South Korea. To isolate strains, Marine agar medium was basically used and cultivated at 37℃ and pH7 for several days aerobically. After single colony isolation, totally 49 pure single-colonies were isolated and phylogenetic analysis was carried out based on the result of 16S rRNA gene DNA sequencing, indicating that isolated strains were divided into 3 phyla, 13 families, 15 genera, 34 species and 49 strains. Proteobacteria phylum, the main phyletic group, comprised 83.7% with 8 families, 8 genera and 26 species of Aeromonadaceae, Pseudoalteromonadaceae, Shewanellaceae, Enterobacteriaceae, Morganellaceae, Moraxellaceae, Pseudomonadaceae, and Vibrionaceae. To confirm whether isolated strain can produce industrially useful enzyme or not, amylase, lipase, and protease enzyme assays were performed individually, showing that 39 strains possessed at least one enzyme activity. Especially the Aeromonas sp. strains showed all enzyme activity tested. This result indicated that isolated strains have shown the possibility of the industrial application. Therefore, this study has contributed for securing domestic genetic resources and the expansion of scientific knowledge of the gut microbial community in Muraenesox cinereus of South Korea.