• 분석과학
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• 제27권1호
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• pp.66-77
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• 2014

본 연구는 국내외에서 생산되는 다양한 식용유지에 대한 탄소 안정동위원소 비율 및 지방산 조성을 분석하고, 국내 유통 식용유지의 순수 여부 등 과학적 관리 방안을 위한 기초자료를 마련하고자 수행되었다. 본 연구에 수집된 식용유지의 탄소 안정동위원소 비율은 참기름 등 $C_3$ 식물군, $C_4$ 식물군인 옥수수유, 유의적인 차이가 인정되는 미강유 등 총 3개 그룹으로 구분이 가능하였다. 수거된 식용유지의 지방산 조성은 각각의 지방산 마다 식용유지별로 유의성을 나타내었다. 또한, 탄소 안정동위원소 비율만으로 구분이 어려웠던 $C_3$ 식물 기원의 식용유지는 지방산을 동시 활용한 산점도 분포 분석을 통해 대표적인 저가 식용유지인 콩기름과 고가 식용유지인 참기름의 구분이 가능하였다. 따라서 탄소 안정동위원소 비율과 지방산 조성을 동시 활용하여 식용유지의 판별이 부분적으로 가능하였으며, 이는 추후 식용유지류 관리 방안으로 검토할 예정이다.

• 대한영양사협회학술지
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• 제22권4호
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• pp.320-339
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• 2016

This study was conducted to identify risk factors to ensure food safety by evaluating cook supervisors' perceived performance of vegetable safety management at Korean food restaurants in Daegu. Recognition of the potential foodborne illness caused by vegetables was 2.60/5 on average. Inspection items with low scores by respondents during food safety inspection by government agencies were "Wash and sanitize vegetables" and "Keep washed and cut vegetables in the refrigerator". As for storage, perceived performance of "Store vegetable in the refrigerator less than 70% of the refrigerator capacity" scored less than 4 out of 5. About 86% of respondents answered "Water-only washing" for vegetable washing. For perceived performance of vegetable cooking, service, and leftover handling, 11 and three items out of 13 were significantly different depending on the size of restaurants and possession of culinary arts certificates, respectively. Based on results, it is necessary to provide food safety training programs for handling vegetables in order to increase knowledge of cook supervisors. In addition, intensive on-site guidance for safety management of vegetables is needed.

• 한국지역사회생활과학회지
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• 제16권3호
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• pp.87-96
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• 2005

This survey was conducted to assess the perception of hazards and washing behavior of vegetables of 500 housewives in Korea. The subjects were selected by the stratified random sampling method. The survey was performed using a structured questionnaire through telephone interviews by skilled interviewers. Most people have bought vegetables and fruits in the supermarket or (traditional) markets rather than stores, department stores, or direct transactions. Eighteen percent of the subjects felt vegetables were secure and were not concerned about safety. But $42.8{\%}$ were concerned about vegetable safety. The perceptions of vegetable-related hazards differed significantly by the respondent's socioeconomic characteristics. Higher concern about vegetable safety was reported by subjects with higher income, children, and who usually buy vegetables in supermarkets or department stores. Most subjects ($88.6{\%}$) perceived that residues of chemical substances such as pesticides were the most significant potential vegetable risk factor, followed by heavy metal, and pathogens. Housewives mainly rinsed vegetables in flowing-water ($85.2{\%}$ of subjects), 3${\~}$4 times ($63.8{\%}$ of subjects), and without detergent ($90.6{\%}$). Subjects believed that hazards decreased by blanching or boiling vegetables rather than washing. Subjects realized more or less correctly the removal rate of pesticide and pathogen through the washing and cooking processes. However, the removal rate of heavy metals was less than subjects thought it would be. Therefore, the scientifically assessed results on safety in the washing and cooking process should be opened to the public to provide the right-to-know and assure confidence in consumers.

• Journal of Microbiology and Biotechnology
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• 제19권11호
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• pp.1415-1420
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• 2009

The aim of the present study was to examine the prevalence of thermophilic Campylobacter spp. (Campylobacter jejuni and Campylobacter coli) in soil, poultry manure, irrigation water, and freshly harvested vegetables from vegetable farms in Malaysia. C. jejuni was detected in 30.4% and 2.7% of the soil samples, 57.1 % and 0% of the manure samples, and 18.8% and 3% of the vegetable samples from farm A and farm B, respectively, when using the MPN-PCR method. Campylobacter spp. was not found in any of the irrigation water samples tested. Therefore, the present results indicate that the aged manure used by farm A was more contaminated than the composted manure used by farm B. Mostly, the leafy and root vegetables were contaminated. C. coli was not detected in any of the samples tested in the current study. Both farms tested in this study were found to be contaminated by campylobacters, thereby posing a potential risk for raw vegetable consumption in Malaysia. The present results also provide baseline data on Campylobacter contamination at the farm level.

• 한국안전학회지
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• 제26권6호
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• pp.7-12
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• 2011

In recent years, environmental concerns have been raised on the use of poorly biodegradable fluids in electrical apparatus in regions where spills from leaks and equipment failure could contaminate the surroundings. The newly invented vegetable insulating oil is highly biodegradable and have negligible impact on the environment, human health and the ecosystem. For development of the environmental-friendly pole transformer using vegetable insulating oil, the dielectric constructions of the pole transformer were discussed in this paper. Depending on the dielectric constructions, the AC breakdown characteristics of the Nomex insulating papers and the vegetable insulating oil were studied by simulated electrode systems. Based on the experimental results, the maximum design stress($E_{max}$) for insulation design of the environmental-friendly pole transformer were suggested.

• 한국안전학회지
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• 제25권6호
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• pp.81-85
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• 2010

In recent years, environmental concerns have been raised on the use of poorly biodegradable fluids in electrical apparatus in regions where spills from leaks and equipment failure could contaminate the surroundings. The vegetable insulation oils are highly biodegradable, have negligible effect on the environment, human health and ecosystem. Therefore, to assure their safe use in electrical power systems, it may require some processing and modification to improve some of their physical, chemical, thermal and electrical properties. This paper provides a comparative results of the electrical breakdown properties of several vegetable insulation oils and mineral oil to use as dielectric fluid in environmental-friendly pole transformer. Also, the electrical breakdown property of the Nomex and kraft insulation papers in vegetable insulation oil is examined.

• Safety and Health at Work
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• 제14권3호
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• pp.287-294
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• 2023

Background: Fruit and vegetable market is an abundant source of bioaerosols. Exposure to organic and inorganic waste and long-term inhalation of bioaerosols during working hours leads to chronic respiratory symptoms. Hence, this study aimed to determine the prevalence of chronic respiratory symptoms and related factors among fruit and vegetable workers compared with the control group in Addis Ababa, Ethiopia. Methods and materials: A comparative cross-sectional study was conducted from 2020 to 2021. Data were entered in EpiData 3.1 and exported to Statistical Package for the Social Sciences (SPSS) version 25. Logistic regressions were computed to depict the data and related factors. The culture method was done to count and compare bacterial and fungal concentrations between fruit and vegetable workers and office workers. Results: In this study, the prevalence of chronic respiratory symptoms (PR = 2.87, 95% confidence interval [CI]: 1.772-4.66) was significantly higher among fruit and vegetable workers (46.7%) than controls (23.4%). Sex (adjusted odds ratio [AOR] = 2.11, 95% CI = 1.12-3.98), educational status (AOR = 1.34, 95% CI = 0.78-2.32), working hours per day (AOR = 3.91, 95% CI = 1.586-9.65), and working department (AOR = 3.20, 95% CI = 0.90-11.40) were associated with chronic respiratory symptoms. Bacterial and fungal concentrations were significantly higher in the air of the vegetable market (276 colony-forming unit) than the air in the workplace of controls (7 colony-forming unit). Conclusion: The fruit and vegetable market workers (greengrocers) had a higher prevalence of chronic respiratory symptoms relative to office workers. Respiratory protective devices should be given to deliver preventive measures.

• 한국식품위생안전성학회지
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• 제13권1호
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• pp.68-75
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• 1998

흰주의 체중은 실험기간동안 증가하였으며, 식이 별로는 대조군이 가장 높은 체중 증가를 보였다. 콜레스테롤의 첨가는 흰쥐의 정상적인 성장을 억제하였으며, 콜레스테롤 첨가군에서는 콜레스테롤 대조군의 체중증가량이 유의하게 가장 낮았다. Rutin과 메밀 채소를 식이에 첨가하였을 때 흰쥐의 콜레스테롤에 의한 성장억제 작용을 효과적으로 감소시키는 것으로 나타났으며, 첨가량의 증가에 따라 혈청의 총 콜레스테롤 함량과 과산화지질 함량은 낮아지는 반면에 HDL-cholesterol 함량은 높아지는 경향을 보였다.

• 한국식품과학회지
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• 제36권4호
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• pp.688-691
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• 2004

본 연구에서는 전국에서 유통되는 대두유, 참기름, 올리브유, 마아가린 등 식용유지 총 205건을 대상으로 대표적 PAHs 화합물인 benzo(a)pyrene 등 8개 PAHs 화합물에 대하여 분석하였다. 분석한 식용유지의 PAHs 평균 함량은 각각 benzo(a)anthracene $0.53{\mu}g/kg$, chrysene $0.82{\mu}g/kg$, benzo(b)fluoranthene $0.50{\mu}g/kg$, benzo(k)fluoranthene $0.18{\mu}g/kg$, benzo(a)pyrene $0.35{\mu}g/kg$, dibenzo(a,h)anthracene $0.16{\mu}g/kg$, benzo(g,h,i)perylene $0.31{\mu}g/kg$, indeno(1,2,3-c,d)pyrene $0.44{\mu}g/kg$이었다. 조사결과 우리나라에서 현재 유통되는 식용유지 중 benzo(a)pyrene 등 PAHs 함량은 외국의 모니터링 결과와 유사하거나 낮았다.

• 한국식품영양과학회지
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• 제43권8호
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• pp.1207-1216
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• 2014

본 연구에서는 유기농 및 일반농 케일과 신선초를 착즙하여 다양한 실험을 통하여 안전성 및 항돌연변이 활성을 비교하였다. 유기농 채소즙의 안전성 측정을 위해 질산염과 아질산염 함량을 분석한 결과 케일즙의 경우 유기농 및 일반농의 함량이 유사하게 나타났다. 신선초즙의 경우 유기농이 일반농보다 질산염 및 아질산염 함량 모두 유의적으로 낮게 나타났다. 한편 7종류의 니트로사민 모두가 이들 채소즙에서 검출되지 않았다. 니트로사민의 저해물들이 반응하는 위에서의 변화를 알아보기 위하여 인공위액에서의 소화과정 중 질산염과 아질산염 함량을 분석한 결과, 유기농 및 일반농 채소즙의 질산염 함량은 인공소화 전보다 후의 함량이 현저히 낮아졌다. 인공 위액계에서 채소즙은 아질산염과 2급 아민에 의해 생성되는 니트로사민의 생성을 오히려 크게 억제하는 효과가 있었다. 질산염과 아질산염을 함유하고 있는 채소즙의 돌연변이 유발 및 저해 효과를 살펴보기 위해 Ames test를 한 결과 항돌연변이 활성이 있었으며, 유기농 채소즙의 항돌연변이 효과가 일반농에 비해 우수한 것으로 나타났다. 이상의 실험 결과 채소즙의 주재료가 되는 유기농 케일 및 신선초는 질산염, 아질산염 등의 함량이 낮을 뿐만 아니라 소화과정에서 전환되어 니트로사민을 생성하지 않았고 항돌연변이 효과도 우수한 것으로 나타났다.