• 한국포장학회지
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• 제27권1호
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• pp.9-16
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• 2021

The present study was conducted to accomplish management efficiency by preparing preemptive measures for consumer dissatisfaction and overcome risks caused by Global Warming through studies of model cases in packaging. Through this study, we made it possible to find a way for companies to prepare for Global warming and consumer dissatisfaction. By contributing to eco-friendly packaging, we are trying to preemptively respond to recent major issues through packaging. Through this experiment, we tried to measure the degree of penetration of Plodia interpunctella H. larva into the insect repellent film produced by printing Ink containing a natural repellent. The control experiment was conducted with an untreated LDPE film to which no insect repellent was applied. The numbers decreased from 17 to 7 when the film was processed with repellent to show experimental results verifying effects of repellent by decrease in 10 (58.8% Decrease). Such results show that it is safe when the film is unfolded but in the case where the film is folded, the Plodia interpunctella H. punches through the film to lead to consumer dissatisfaction and it suggests that this can bring on risks to corporate management. Considering that most of the film is folded in the case of PE bag packaging, the direction which the corporations should take in terms of preparing for climate change countermeasures and consumer dissatisfaction has been clarified. Due to it receiving satisfactory results in safety rest results for printing film applied with pest repellent as well as the Quality analysis to test repellent contents of repellent film, it is certain that the importance of repellent method in packaging will increase in preparing for consumer dissatisfaction and actions against climate change henceforth.

• 한국포장학회지
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• 제25권3호
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• pp.89-94
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• 2019

Among the many packaging materials used in cushion packaging, there is a lack of optimum design for the tray cup pad used in fruit packaging for export and domestic distribution. It causes over-packaging due to excessive material input, and this could be solved by applying various parameters needed to optimize the design of the tray cup pad considering the packaging material and the quantity of fruits in the box. In the case of a tray cup for fruits, the economic efficiency of material and thickness should be considered. Therefore, it is possible to design a tray cup pad depending on the packaging material used by applying appropriate design parameters. The static and dynamic characteristics of the materials used for packaging of pears were analyzed by using the FEM (finite element Method) simulation technique to derive the optimal design parameters. And by applying the appropriate design parameters considering the quantity of fruit and distribution environment, it is possible to design an appropriate fruit tray cup pad. In this study, as a result of simulating the contact stresses between the fruit and the tray cup for the PP, PE, and PS materials used in the fruit tray cup, the material with the lowest contact stress was PP and the value was found to be 398 Pa. The contact displacement between fruit and tray cup using this material was about 0.0463 mm, which was the lowest value compared with other materials. Also the resonance frequency band of tray cup made of PP material was below 36.81 Hz, and the strain energy was below 12.20 J. The resonant frequency band of the pear is more than 80 Hz and it could be applied to all the tray cup materials as compared with the resonance band of 38.81 Hz or less which is the resonance band of all tray cup pads for packaging. Finally, PP is the most suitable material for the tray cup pad.

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2003년도 추계학술대회
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• pp.109-110
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• 2003

• 한국독성학회:학술대회논문집
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• 한국독성학회 2003년도 추계학술대회
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• pp.109-110
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• 2003

To validate a novel mouse model, gpt delta, for in vivo mutagenesis, the Mammalian Mutagenesis Society (MMS), a subgroup of the Environmental Mutagen Society of Japan (JEMS) (JEMS/MMS), performed a collaborative study as the third trial for transgenic animal assay. In this mouse model, point mutations and deletions re separately identified by gpt (6-thioguanine-resistant) and Spi- (sensitive to P2 interference) selections, respectively.(omitted)

• 한국식품과학회지
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• 제28권5호
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• pp.841-849
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• 1996

직접 설계한 냉각조, 침지조 및 살수조를 갖춘 냉수냉각 시스템에서 수냉각에 의한 냉각특성시험을 하므로써 향후 시스템 제작에 필요한 기초자료를 제공함과 아울러 본 시스템에 의한 농산물의 선도유지 세척효과 및 저장효과를 살펴보기 위해 당근을 시료로 수확 후의 저장기간별 품질변화를 조사하였다. 냉수냉각에 있어 냉각시간에 대해 무차원화한 온도를 semi-log로 plotting한 결과, 당근의 개체별 냉각속도계수는 $-0.0171min^{-1}{\sim}-0.0121min^{-1}\;(R^{-1}=0.99{\sim}0.95)$로, 포장 시에는 $-0.141min^{-1}{\sim}-0.0038min^{-1}\;(R^{2}=0.98{\sim}0.92)$로 나타났다. 또한, 저장온도에 따른 처리구별 저장시험에서 처리조건에 따른 수분함량 및 중량감소율은 $5^{\circ}C$ 저장에서는 미미한 차이만을 나타내었고, $15^{\circ}C$ 저장에서는 수냉처리구가 저장 $30{\sim}40$일까지 무처리구에 비해 효과가 있었다. 또한 수냉처리한 후 포장조건에 따른 저장시험에서는 PE비닐 포장이 트레이 포장시보다는 낮은 중량감소율을 나타내었다. 부패율은 수냉처리한 당근 중에도 소독처리한 시료, PE비닐 포장한 시료, 탈수처리한 시료가 타 시료에 비해 낮게 나타났으며, 색택변화도 수냉처리한 당근이 무처리한 시료에 비해 저장기간의 경과에 따라 Hunter L값 및 b값의 변화 정도가 완만하였다. 카르테노이드 함량의 변화는 처리조건에 관계없이 초기치 $0.736{\sim}0.780mg%$가 $5^{\circ}C$저장에서 40일 후, $15^{\circ}C$저장에서 20일 이내에 $9{\sim}43%$ 정도 감소되었다. 초기 미생물수도 수냉처리에 의해 상당히 감소시킬 수 있었으며 특히, 소독제 첨가에 의해 총균수 및 대장균군의 초기치 감소와 저장기간에 따른 증식 억제 효과를 확인되었다.