• Journal of Bio-Environment Control
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• v.27 no.4
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• pp.349-355
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• 2018

This study was aimed at predicting the yield of paprika (Capsicum annuum L.) through analyzing the growth characteristics, yield pattern and greenhouse environment. In the greenhouse of the Gyeongnam area (667 m above sea level), the red paprika 'Cupra' and the yellow paprika 'Fiesta' were grown from July 5, 2016 to July 15, 2017. The planting density was $3.66plants/m^2$ and attracted 2 stems. During the cultivation period, the average external radiation of the glasshouse was $14.36MJ/m^2/day$ and the internal average temperature was controlled as $20.1^{\circ}C$. After 42 weeks of planting, the growth rate of 'Cupra' was 7.3 cm/week and that of 'Fiesta' was 6.9 cm/week. The first fruit setting of 'Cupra' appeared at 1.0th node and 'Fiesta' at 2.7th node. The first harvest of 'Fiesta' was 11 weeks after planting and 'Fiesta' was 14 weeks. Comparing the yield per 10 a until the end of the cultivation in July, 'Fiesta' was 19,307 kg, which was 2.4% higher than that of 'Cupra'. And the fruit weight ratio of over 200 g of 'Cupra' was 27.7% which was 7.7% higher than that of 'Fiesta'. The average required days to harvest after fruit setting of 'Cupra' was 72.6 days and 'Fiesta' was 63.8 days. According to the relationship between the average required days to harvest and the cumulative radiation (during from fruit setting to harvest), the more radiation increases the less required days to harvest increases after February. In terms of yield, 'Cupra' increased in yield as the cumulative radiation increased, while 'Fiesta' showed an irregular pattern. Cumulative radiation from fruit setting to harvest was negatively correlated with required days to harvest after February in both cultivars. But in relation to yield, there were difference between 'Cupra' and 'Fiesta'.

• Journal of Bio-Environment Control
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• v.30 no.4
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• pp.271-277
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• 2021

In this study, experiments of local heating on crown and supplying warm nutrient for energy saving and improving growth of 'Seolhyang' strawberry were conducted. The temperature of inside and crown in greenhouses which were control (space heating 8℃) and test (space heating 5℃+crown heating) was measured. In the control greenhouse, the average of temperature and humidity in December was 7.1℃, 87.2%, respectively. In the test greenhouse, the average of temperature and humidity in December was 5.7℃, 88.7%. The temperature of crown and inside the bed were 7.9℃, 10.8℃ in control, 9.3℃, 12.7℃ in test. During the test period, the total 16,847×10³ kcal of energy was consumed in control greenhouse including space heating. In test greenhouse including space heating, crown heating and warm water supplying, total 9,475.7×10³ kcal of energy was consumed. So, energy consumption in test was 43.8% less than in the control. The total yields of strawberry during test period were 412.7g/plant for test greenhouse and 393.3g/plant for control greenhouse respectively.

• Journal of Food Hygiene and Safety
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• v.26 no.4
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• pp.289-295
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• 2011

Produce, including leafy vegetables, has been implicated in several outbreaks of food illness. To evaluate microbiological safety of lettuce and it's cultivation area, a total of 147 samples were collected from lettuce farms and post harvest facility at Icheon, Gyeonggi province. The collected samples were assessed for presence of sanitary indicator microorganisms (Aerobic plate count, coliform count, Escherichia coli) and foodborne pathogens (Escherichia coli O157:H7, Salmonella spp., Staphylococcus aureus, Listeria monocytogenes, Bacillus cereus). The population of APC was over 4.0 log CFU from most of the samples. While the numbers of APC, and coliform of lettuce at 62 days after transplanting were 4.18 log CFU/g, and 1.00 log CFU/g, respectively, those of 10 days after transplanting were 5.37 log CFU/g, and 2.87 log CFU/g, respectively. B. cereus was highly detected from soil and balance which were contaminated with 3.5 log CFU/g, and 2.6 log CFU/100 $cm^2$, respectively. The number of E. coli recovered from gloves was 3.5 log CFU/hand. However, E. coli O157:H7, Salmonella spp., and L. monocytogenes were not detected. These data suggested that risk management system should be introduced to lettuce farms to enhance safety of lettuce.

• Horticultural Science & Technology
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• v.34 no.1
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• pp.94-101
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• 2016

The purpose of this study was to establish postharvest management techniques including a temperature pre-conditioning protocol for maintaining fruit quality in newly developed early-season Korean pear cultivar 'Hanareum' (Pyrus pyrifolia Nakai). The fruits were treated with three different pre-conditioning temperatures (21, 25, or $29^{\circ}C$) for 4 days according to the harvest time (103 or 110 days after full bloom, DAFB). The percent weight loss was relatively low in the fruits subjected to low pre-conditioning temperature regardless of harvest time. The firmness of the fruits treated with pre-conditioning at $21^{\circ}C$ remained high during 20 days of simulated marketing at $25^{\circ}C$, although all treated fruits showed a general decline of firmness with extended time of simulated marketing. These fruits also showed higher appearance and a lower incidence of mealiness disorder symptoms. During the experimental periods, the production of ethylene was lower in the fruits pre-conditioned at $21^{\circ}C$ in comparison with those of treated at 25 and $29^{\circ}C$. High respiration rates were obvious in the fruits pre-conditioned at high temperature ($29^{\circ}C$), especially in the optimum-harvested fruits, where respiration was approximately two times higher than that of fruits exposed to $21^{\circ}C$ during pre-conditioning. However, the respiration rate was similar during simulated marketing at $25^{\circ}C$ regardless of harvest time. These results demonstrated that temperature pre-conditioning at $21^{\circ}C$ is a simple and effective postharvest technique for summer harvested Korean pear cultivars including 'Hanareum'.

• Life and Agrochemicals
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• s.283
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• pp.45-47
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• 2012

파프리카(Paprika)는 착색단고추로 1995년부터 본격적으로 재배, 수출용으로 소비되었으나 최근에는 피자, 샐러드용으로 국내소비도 많아지고 있다. 재배양식은 여름형과 겨울형이 있다. 여름재배는 3월 중순경 정식, 6월 중순부터 12월까지 수확한다. 겨울재배는 9월 초순정식, 12월 초부터 7월까지 수확하여 연중 재배되고 있다. 시설 내 파프리카 생육적온은 주간 $21-27^{\circ}C$, 야간 $18-19^{\circ}C$이며 습도는 70-80%로서 시설내 발생하는 미소해충들이 번성하기에 좋은 조건이다. 해충 방제는 피해를 정확히 진단하고 발생초기에 적절한 방제수단을 강구하여야 피해를 최소화 할 수 있다. 따라서 재배유형별로 작기 전 기간에 걸쳐 종합적인 해충관리대책이 수립되어야 하며, 어린모 구입시 건전묘 구입, 해충 수시 예찰과 조기방제, 작기 후 포장위생을 철저히 하여야 한다.

• Air Cleaning Technology
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• v.22 no.2
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• pp.31-39
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• 2009

최근 식생활의 다양화와 식품 안전에 대한 관심 증가에 따라 식품 공장의 청정화와 작업장의 위생 관리에 대한 노력이 많이 이루어지고 있다. 그 중에 서도 농식품 분야에서는 최근 들어서 신선한 과일과 채소류를 식품소재로 이용한 신선편이 가공 농산물의 수요가 늘어나고 있다. IFPA(The International Fresh-cut Produce Association)의 정의에 따르면 신선편이 농식품은 박피되거나 절단되어져 신선함을 유지한 채로 소비자들에게 높은 영양과 편이성 및 풍미를 제공하는 포장형태의 100% 이용 가능한 과일 및 채소제품을 말한다. 이러한 신선편이 농식품은 식재료공급에 있어 안전성 및 편이성이 있으나 수확 후 처리시설에 대한 위생 개념이 도입되지 않고는 양질의 식재료를 공급하는 것은 어렵다. 그러나 신선편이 농식품은 살아있는 생체 조직으로 박피, 절단 등의 과정을 거치면서 세포가 파괴되어 급격한 품질 변화가 나타 날 수 있으며, 최소한의 비가열 가공공정만을 거치게 되므로 식품원료 내에 존재하는 미생물이 그대로 유지 될 수 밖에 없는 문제점을 가지고 있다. 또한 일반적으로 선선편이 제품의 가공과정에서 절단 처리시 표면에 묻어 있던 미생물이 과육 부위로 옮겨지면서 식품 세포 조직의 체액을 영양성분으로 활용하여 급격히 증식함으로서 식품의 변질을 일으키거나 섭취시 질병을 일으킬 수 있는 가능성이 있다. 특히, 신선편이 농식품 중에서 가장 많이 소비되는 엽채류는 수확 직후 잎 표면에 토양과 물에 의한 다양한 미생불이 부착되어 식품의 변질 가능성이 크다. 그러므로 농산물의 유통 및 보관단계에서 미생물 오염 가능성이 있기 때문에 신선편이 농식품은 원료 구입 후 제품 생산 및 포장에 이르는 과정에서 각 작업 단계별 위해요소를 분석하고, 식품 안전성을 확보하여 철저한 위생 관리가 중요하다. 따라서 본 자료는 농식품 작업장중 세척공정을 거치는 신선편이농산물과 세척공정을 거치지 않는 신선농식품 작업장에 대한 위생관리 및 관련 설비 기술 개발을 위한 기초 자료로 활용하고자 현재 운영중인 작업장을 중심으로 직접 현지 조사한 자료이다.

• Journal of Food Hygiene and Safety
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• v.29 no.3
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• pp.181-188
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• 2014

The objective of this study was to analyze the microbiological hazards of Astragalus membranaceus Bunge on the post-harvest processing. Samples from processing equipments (cleaner, water, cart, table, tray and packaging machine), personal hygiene (hand) and harvested crops (before washing, after washing, after sorting, and after drying) were collected from four farms (A, B, C, and D) located in Chungchengbuk-do, Korea. The samples were analyzed for sanitary indication bacteria and pathogenic bacteria. First, total aerobic bacteria and coliform in processing facilities were detected at the levels of 0.93~4.86 and 0.33~2.28 log CFU/$100cm^2$ and/mL respectively. In particular, microbial contamination in hand (5.43~6.11 and 2.52~4.12 log CFU/Hand) showed higher than processing equipments. Among the pathogenic bacteria, Bacillus cereus was detected at the levels of 0.33~2.41 log CFU/$100cm^2$, 1.48~3.27 log CFU/Hand and 0.67~3.65 log CFU/g in equipments, hands, and plants and Staphylococcus aureus were detected in cleaner, table, hand and harvested crops (before washing and after sorting) by qualitative test. Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella spp. were not detected. These results indicated that personal hygiene and processing equipments should be managed to reduce the microbial contamination of A. membranaceus Bunge. Therefore, management system such as good agricultural practices (GAP) criteria is needed for hygienic agricultural products.

• Proceedings of the Korean Society of Food and Cookery Science Conference
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• 2003.10a
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• pp.89-89
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• 2003

고사리(Pteridium aquilinum)는 봄철에 어린싹을 삶아 물에 담구었다가 먹거나 건조시켜 저장해서 이용하는데 현재 유통되고 있는 건고사리는 수확, 건조 및 저장 중에 비위생적인 관리 둥에 의해 미생물의 중식 및 해충의 발생 등으로 품질이 크게 저하되어 저장상 많은 어려움을 안고 있다. 살균, 살충을 위한 방사선의 식품에의 이용은 그 건전성과 경제적 타당성이 인정되어 여러나라에서 실용화 되고 있다. 방사선 조사된 건고사리는 선행연구에서 재수화성이 증대되었고, 조리에 의한 연화시간이 단축되어 에너지 절감의 효과가 있었다. (중략)

• Proceedings of the Korean Society of Crop Science Conference
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• 2005.04a
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• pp.40-41
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• 2005

• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.194-195
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• 2011