• 펄프종이기술
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• 제39권1호
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• pp.64-68
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• 2007

The oak and pine charcoal were used to develop the inner packaging material for maintaining the freshness of vegetables and fruits, and to investigate the possibility in the application for inner packaging. The effects of the charcoal type, species, particle size, and grammage on the adsorption efficiency of ethylene gas were studied. White charcoal has superior ethylene gas adsorption performance to those of black charcoal. Pine charcoal was superior to oak charcoal in the ethylene gas adsorption. Higher gas adsorption was obtained by the higher grammage sheet. The difference in the adsorption efficiency was not significant between ONP and KOCC.

• 월간포장계
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• 통권144호
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• pp.74-80
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• 2005

• 한국포장학회지
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• 제13권3_4호
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• pp.89-95
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• 2007

식물성 천연항균제인 BAAG와 기능성 무기계 첨가제인 zeolite를 이용하여 항균 및 ethylene 가스 포집 능력을 갖는 포장원지를 제조하였다. 기능성 포장원지의 인장강도와 파열강도는 항균제와 zeolite를 첨가하지 않았을 때보다 다소 감소하는 경향을 나타내었고, 반면에 강성과 인열강도는 항균제와 zeolite를 첨가하지 않았을 때보다 증가하는 경향을 나타내었다. 과채류 숙성 호르몬인 ethyene 가스는 포장원지에 zeolite를 첨가하면서 빠르게 감소하였다. 포자원지의 발수성은 중성 사이즈제인 AKD를 첨가하면서 높은 내수성을 나타내었다.

• 한국포장학회지
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• 제28권1호
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• pp.47-53
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• 2022

최근 식품의 품질을 확인하는 소비자의 관심이 높아짐에 따라 지능형 식품포장 기술이 점차 발전하고 있다. 지능형 포장의 중요한 요소인 indicator는 특정 물질을 감지하거나 식품 품질 변화를 나타내기 위한 색변화를 나타낸다. Gas indicator는 식품 품질이 변할 때 방출되는 휘발성 물질을 감지하기 위해 식품 포장에 내장될 수 있다. 에틸렌 가스는 후숙과일의 호흡을 증가 시키며 후숙과일이 숙성이 진행됨에 따라서 에틸렌가스가 다시 생성된다. 포장된 과일의 경우 headspace의 에틸렌가스 농도는 과일의 숙성도와 밀접한 관련이 있다. 이와 관련하여 에틸렌 가스 흡수제를 제조하여 에틸렌가스를 제거하는 방법도 적용된다. 하지만 이는 소비자가 적숙기의 과일을 섭취하는데 도움이 되지 않는다. 과일 포장에 사용할 수 있는 에틸렌가스 지시계가 있다면 소비자는 최적의 시간에 과일을 섭취할 수 있을 것이다. 본 논문에서는 금속 물질 환원반응 활용 지시계, fluorescence 활용 지시계, pH 지시약 활용 지시계, 리포솜 활용 지시계 등의 다양한 에틸렌가스 지시계를 비교하여 지금까지 개발된 에틸렌가스 지시계의 특성과 장단점을 분석하였다. 각 지표를 분석한 결과, 금속 물질 환원반응 기반 지표인 몰리브덴(Mo)에 팔라듐(Pd)을 촉매화하여 물리적 장벽의 수단인 SiO₂와 30PDDA(polydiallyl dimethyl ammonium chloride)의 다중층에 적용한 지시계가 안정성, 에틸렌가스에 대한 민감도, 시각적 변화를 통한 정보 제공력에서 가장 적합한 지시계로 가능성이 높을 것으로 사료된다.

• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2006년도 PAN PACIFIC CONFERENCE vol.2
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• pp.455-458
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• 2006

The oak and pine charcoal were used to develop the internal packaging raw material for maintaining the freshness of vegetables and fruits, and to investigate the possibility in the application for pulp mold packaging. The effects of the charcoal type, species, particle size, and grammage on the adsorption efficiency of ethylene gas were studied. White charcoal has superior ethylene gas adsorption performance to those of black charcoal. Pine charcoal was superior to oak charcoal in the ethylene gas adsorption. Higher gas adsorption was obtained by the higher grammage sheet. The difference in the adsorption efficiency was not significant between ONP and KOCC.

• 한국포장학회지
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• 제23권3호
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• pp.151-162
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• 2017

본 연구의 목적은 세절된 생울금의 포장방법에 따른 저장기간 중 품질변화를 관찰하고자 수행되어졌다. 세절된 생울금은 가스배출밸브(DVP), 이산화탄소 흡수제(CAP), 미세천공필름(MPP) 등을 적용한 포장방법을 이용하여 포장되어졌으며 $4^{\circ}C$와 $23^{\circ}C$에서 15일간 각각 저장하면서 품질의 변화를 관찰하였다. 이때 생울금의 품질변화 관찰을 위한 지표로써 중량감소, CIE $L^*a^*b$ 색차와, 포장내부의 가스조성변화, 커큐민 함량, 세절 생울금의 경도 등을 조사하였다. DVP는 생울금의 호흡에 의해 발생한 이산화탄소의 외부배출에 효과적이지 못하였다. 또한 MPP는 생성된 가스의 외부배출에는 적절하였으나 천공된 구멍으로 외부의 산소가 다량 유입되어 빠른 갈변현상과 짓무름 현상이 발생하였다. 내부에 생성된 탄산가스의 제거를 위해 이산화탄소 흡수제가 봉입된 CAP는 갈변과 생성된 이산화탄소에 의한 포장의 팽창 현상의 억제 및 중량감소를 최소화할 수 있는 포장방법으로 가장 효과적인 것으로 확인되었다.

• 한국식품저장유통학회지
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• 제6권1호
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• pp.43-47
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• 1999

To develop a wrapping film, which suppresses the microbial decay through the storage and distribute of greenhouse fresh produce, the antimicrobial packaging films were made and applied to the preservation of grapes(Campbell early). For the purpose the films were made by adding 1% grapefruit seed extract(GFSE) to LDPE film(Control). Graps were separately wrapped with packaging films in the state of closely-adhered packaging as well as modified atmosphere packaging(MAP). The wrapped grapes were stored at 5$^{\circ}C$ for 65 days and then the colony count of contaminated microorganims, decay ration of grapes, the gas component within the packages and chemical qualities were investigated. The antimicrobial film packaging showed the efficient results to suppress microbial growth as compared with control. The total number of containated microorganisms were decreased gradually through all the storage period. In the closely-adhered packaging and MAP the decay ratios of grapes was 31% and 19%, indivisually. After the storage period of 65 days, the interior gas components of MAP were 4.5% of O2 and 17.6% of CO2, which were efficient for the storage of grapes. In addition, no negative effects in sweetness and acidities occurred.

• 한국포장학회지
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• 제9권1호
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• pp.33-54
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• 2003

The aim of this study was to develop a model that could be used in the design of modified atmosphere packaging (MAP) for peaches. Respiratory data at 5, 10, $20^{\circ}C$ for peaches were gathered and altered for create useful respiration model. Packaging materials were conventional low density polyethylene and polypropylene with anti-fog, and anti-fungi treatments, and thickness was $30{\mu}m$ and $50{\mu}m$ each. Permeability tests were performed to find their oxygen, carbon dioxide, water vapor transmission rate as increases in temperature. Test results were then converted to logarithm format for MAP modeling. The maximum rate of oxygen uptake increased with increasing temperature. Optimum gas composition in the package system for fruits were set according to literature and upper or lower limits of oxygen and dioxide established. To predict gas composition at certain storage time, weight of fruits, film thickness, film type, and other variables, respiration rate was studied at various storage conditions. The results of tests were used to calculate Cameron's model and converted to a cubic estimation equation. The validity of the model was tested experimentally by observing actual atmospheric changes inside packages. This result of study may be useful for designing dynamic gas exchange MAP systems for similar agricultural products.

• Food Science and Biotechnology
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• 제15권5호
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• pp.683-687
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• 2006

The respiration rate of Chinese quince was measured at 0, 5, 10, and $20^{\circ}C$ to determine its tolerable range of storage temperatures. Based on the measured respiration rates, plastic films covering a wide range of gas permeabilities were used for packaging and storing individual Chinese quince at 0 and $10^{\circ}C$. Chinese quince can be categorized as low respiration fruit. Higher respiratory quotients were observed at higher temperature suggesting that the tolerable temperature range for storage is $0-10^{\circ}C$. Packages containing Chinese quince wrapped in highly gas-permeable polyolefin film PD 941 attained, with progressive decreases in volume, 9.5-10.2% $O_2$ and 1.3-1.8% $CO_2$ at $0^{\circ}C$, 8.1% $O_2$ and 2.4% $CO_2$ at $10^{\circ}C$. At these levels, PD 941 could preserve the fruit at acceptable quality levels for 152 and 50 days at 0 and $10^{\circ}C$, respectively. Less gas-permeable packages built up high $CO_2$ concentrations (above 15.8%) and low $O_2$ concentrations (less than 1.8%) causing free volume expansion and eventual dark discoloration of the fruit. The storage life realized by packaging with polyolefin film PD 941 could facilitate the availability of Chinese quinces in winter and spring for medicinal or ornamental purposes in the fresh state.

• 한국포장학회지
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• 제4권1호
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• pp.17-21
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• 1997

Zeolite powder used by molecular sieve, adsorbants and catalist. 1N HCl teated zeolite powders for freshness extension of fruits and vegetables showed that specific surface area was $300.29m^2/g$ largest then that of the others, and ethylene gas adsorbability was 29.07 cc/g. And then 0.5N NaCl Henting after 1N HCl treated zeolite powder showed that specific surface area and ethylene gas adsorbability was $329.43m^2/g$ and 35.64 cc/g largest then those of the others. Specific surface area of processed zeolite powder treated by high intensity magnetic seperator(HIMS) showed $369.67m^2.g$, ethylene gas adsorbability was 39.87cc/g. In this study, it could be employ 0.5N NaCl treat and HIMS methods as MA packaging materials for freshess extension of fruits and vegetables.