• Title/Summary/Keyword: Ethylene gas

Search Result 52, Processing Time 0.107 seconds

Study on the Manufacture of Ethylene Gas Absorbing Corrugated Board (에틸렌 가스 흡착 기능성 골판지 제조를 위한 기초연구)

  • Lee, Ji Young;Kim, Chul Hwan;Kim, Eun Hea;Park, Tae Ung;Choi, Jae Sung
    • Journal of Korea Technical Association of The Pulp and Paper Industry
    • /
    • v.48 no.2
    • /
    • pp.20-27
    • /
    • 2016
  • Ethylene gas is a natural hormone that directly affects the freshness of agricultural products, so it is very important for the maintenance of freshness to remove ethylene gas from corrugated board boxes. Many methods for the removal of this and other gases have been reported. In this study, the utilization of an absorbent using activated carbon was adopted for the removal of ethylene gas from a corrugated board box. Activated carbon powders were prepared by grinding in a laboratory and were used to treat the surface and to laminate paperboards with a starch solution. The ethylene gas absorption was evaluated by using a gas chromatography to measure the residual ethylene gas concentration. About 60% of the ethylene gas was absorbed by the activated carbon itself. However, the paperboards that were surface-treated and laminated with starch and activated carbon showed lower than 20% ethylene gas absorption. This was because the starch and smaller particles of activated carbon blocked the surface pores of activated carbon particles. Therefore, either the use of the binders must be minimized for the surface treatment of paperboards, or activated carbon packs can be used as absorbents in corrugated boxes.

Development of Inner Packaging Material for Maintaining the Freshness of Fruits and Vegetables

  • Won, Jong-Myoung;Song, Je-Yun
    • Journal of Korea Technical Association of The Pulp and Paper Industry
    • /
    • v.39 no.1
    • /
    • pp.64-68
    • /
    • 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.

Ethylene gas adsorption capacity and preserving effect of fruit freshness of Charcoal-fiberboard by wet forming process (습식공법으로 제조한 목탄-목재섬유복합재료의 에틸렌가스 흡착력과 과일 신선도 유지 효과)

  • Lee Hwa Hyoung;Kim Gwan Eui
    • Journal of the Korea Furniture Society
    • /
    • v.14 no.1
    • /
    • pp.1-9
    • /
    • 2003
  • This research was carried out for packing materials and building materials to examine thylene gas adsorption and effect of keeping fruit fresh of wet formed charcoal-fiber mposite made from defibrated fiber of Pinus densiflora Sieb. et Zucc. and white charcoal from uercus variabilis Bl.(wood fiber: charcoal=8:2, 6:4, 4:6, 2:8), with/without phenol formaldehyde resin(PF, Non volatile content:$52\%$, resin content $1,3,5\%$). The results are summarized as follows: 1. The higher the charcoal content, the more the ethylene gas adsorption. At the same mixing ratio of fiber to charcoal, $\#100-200$ of charcoal particle size gave the better reslts than $\#60-100$. 2. Adding PF into the charcoal fiber composite decreased the capacity of ethylene gas adsorption but there was no significant difference until $5\%$ adding amount of PF. 3. For keeping fruit fresh for a long time, Charcoal fiber composite was $66\%$ longer than control. The higher the white charcoal content, the longer fresh time.

  • PDF

A Study on Thermodynamic Properties of Ethylene Gas Hydrate

  • Lim, Gye-Gyu
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.23 no.E1
    • /
    • pp.10-15
    • /
    • 2007
  • The gas hydrates are probably most sensitive to climate change since they are stable only under specific conditions of high pressure and low temperature. One of the main factors responsible for formation of gas hydrates is the saturation of the gases with water vapor. Quantitative phase equilibrium data and understanding of the roles of water component in the phase behavior of the heterogeneous water-hydrocarbon-hydrate mixture are of importance and of engineering value. In this study, the water content of ethylene gas in equilibrium with hydrate and water phases were analyzed by theoretical and experimental methods at temperatures between 274.15 up to 291.75 K and pressures between 593.99 to 8,443.18 kPa. The experimental and theoretical enhancement factors (EF) for the water content of ethylene gas and the fugacity coefficients of water and ethylene in gas phase were determined and compared with each other over the entire range of pressure carried out in this experiment. In order to get the theoretical enhancement factors, the modified Redlich-Kwong equation of state was used. The Peng-Robinson equations and modified Redlich-Kwong equations of state were used to get the fugacity coefficients for ethylene and water in the gas phase. The results predicted by both equations agree very well with the experimental values for the fugacity coefficients of the compressed ethylene gas containing small amount of water, whereas, those of water vapor do not in the ethylene rich gas at high temperature for hydrate formation locus.

Response of Korean Ginseng (Panax ginseng C. A. Meyer) to 2, 4- D II. Effects of 2, 4-D Foliar Application on Photosynthesis, Ethylene Gas Production and Plant Growth (제초제 2, 4-D에 대한 고려인삼의 반응 II. 2, 4-D의 경엽처리가 인삼엽의 광합성, 에칠렌가스 발생 및 지상부 생육에 미치는 영향)

  • 조재성;원준연;신최순
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.36 no.2
    • /
    • pp.107-111
    • /
    • 1991
  • This study was conducted to define the effect of 2, 4-D foliar application on the plant growth. photosynthesis ability and ethylene gas production of the ginseng plant. Neither abnomal foliar changes occured nor any inhibition in the leaf and stem growth was resulted for the plants treated with 2,4-D concentrated three times of the recommended dosage. The angle of petiole to the stem became wider by 2, 4-D foliar application. The higher concentration treatment of 2,4-D made the petiole angle significantly wider. Foliar application of the herbicide 2,4-D inhibited photosynthesis of the ginseng leaf. The inhibition rate of photosynthesis was significantly increased with the application concentration of 2, 4-D. Inhibition in photosyn-thesis ability by 2,4-D application with doubled concentration was recovered in three days after treatment. When 2,4-D was treated with a concentration tripled the recommended dosage, 12 days were needed to recover the photosynthesis ability of the ginseng leaf. Ethylene gas was not detected from the ginseng plants treated with 2 times concentrated 2, 4-D. However, the ginseng plants produced 0.03-0.04 ppm ethylene gas when the application rate was increased 3 times. The amount of ethylene gas produced by ginseng plant treated with 3 times concentrated 2, 4-D was only 1/20 compared with the amount produced by the soybean plant treated with the recommended dosage of 2, 4-D.

  • PDF

Pulp Mold as a Packaging Material for Maintaining the Freshness of Fruits and Vegetables

  • Won, Jong-Myoung;Song, Che-Yun
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
    • /
    • /
    • pp.455-458
    • /
    • 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.

  • PDF

Procedures for Analyzing Ethylene by Gas Chromatograph (Gas Chromatograph를 이용한 에틸렌 분석 기술)

  • 이승구
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.34 no.s01
    • /
    • pp.33-39
    • /
    • 1989
  • Ethylene gas classified as one of five major plant hormones plays an important role in various plant metabolism. The precise analysis of ethylene production of plants or plant parts is a valuable research procedure because knowledge of ethylene production facilitates measures of the physiological activity within the tissue. This paper describes procedures for analyzing ethylene from plant tissues by gas chromatography and discusses problems associated with extracting gas samples either by introducing a vacuum to plant samples or by using a hypodermic syringe. Introduced are a continuous flow system for efficient analysis and an automated system for sampling, analyzing, calculating and recording ethylene production data.

  • PDF

Development of Charcoal Containing Paper for Packing Grades( I ) - Ethylene Gas Adsorption - (숯을 활용한 포장재 개발에 관한 연구 (제1보) - 에틸렌 가스흡착 -)

  • Seo, Young-Bum;Jeon, Yang;Lee, Hwa-Hyung;Jung, Tae-Young;Lee, Jong-Seok
    • Journal of Korea Technical Association of The Pulp and Paper Industry
    • /
    • v.35 no.2
    • /
    • pp.46-51
    • /
    • 2003
  • The charcoal is known to have gas adsorption capability and is used frequently to mitigate the unpleasant smells from food and clothing. It is also used to treat water to remove dissolved organic and inorganic substances. In this paper, we applied the several different kinds of charcoals to the papers in three different ways to investigate if charcoal application method affects its gas adsorption capability. Wet end addition, making multiply, and coating method were tested. Specific ethylene gas adsorption capabilities were measured. Experimental results shows that manufacturing conditions of the charcoal itself changed its gas adsorption properties. The boxes used for agricultural produces, and the packaging paper for flowers are to be well fitted application for the charcoal added paper. Mulch paper, which needs opacity and air permeability with proper strength properties, is another candidate for the application of charcoal added paper.

Development of MA Packaging Materials for Freshness Extension of Fruits and Vegetables(2) (과실 채소류의 MA포장용 소재의 효과제고에 관한 연구(2))

  • Park, Hyung-Woo;Park, Jong-Dae;Kim, Byung-Sam;Kim, Hoon;Yang, Han-Chul
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
    • /
    • v.4 no.1
    • /
    • pp.17-21
    • /
    • 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.

  • PDF

Analysis of Physical Properties and Water Repellency Property in Functional Packaging Paper (기능성 포장원지의 물성변화 및 내수성 분석)

  • Kim, Chul-Hwan;Cho, Sung-Hwan
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
    • /
    • v.13 no.3_4
    • /
    • pp.89-95
    • /
    • 2007
  • Functional packaging paper containing botanical antimicrobial agent (BAAG) and inorganic zeolite was developed for antimicrobial activity and adsorption of ethylene gas of the paper. The physical properties of the packaging paper showed different characteristics with addition of BAAG and functional fillers: both tensile strength and burst strength were decreased, but both stiffness and tear strength were slightly increased. Zeolite also contributed to fast removal of ethylene gas known as aging hormone of fruits and vegetables. Alkyl ketene dimer (AKD) was greatly effective to endow the packaging paper with water repellency property.

  • PDF