• 농업과학연구
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• 제19권2호
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• pp.145-152
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• 1992

배 '신고(新高)'의 저장 중 신선도(新鮮度) 유지(維持)를 위한 적합한 저장전 처리방법을 찾기 위하여 수확 후 60일이 경과된 과실을 대상으로 polyethylene film포장(包裝), ethylene 제거제(除去劑) 및 피막제(被膜劑)의 효과(效果)를 검토하였다. 우리나라 '신고(新高)' 배의 저장에서 과실의 신선도(新鮮度) 저하에 크게 영향하는 요인으로 과도(過度)한 수분상실(水分喪失)에 의한 감량의 발생과 이에 따른 조직(組織)의 노화(老化)가 중요한 요인인 것으로 확인되었다. PE포장은 과실의 감량방지(減量防止)에는 효과적이나 흑변(黑變)의 발생(發生)을 증가(增加)시키고 장기저장시(長期貯藏時)에는 조직의 노화(老化)와 심부과(心腐果)의 발생(發生)을 증가(增加)시키므로 부적합(不適合)하였다. 과실 피막제(被膜劑) Prolong의 신선도(新鮮度) 유지효과(維持效果)가 인정되지 않아 동양 배의 저장전(貯藏前) 처리로는 부적합(不適合)한 것으로 밝혀졌으며 PE포장시 ethylene제거제(除去劑)의 처리(處理)는 옅은 흑변(黑變)의 발생을 다소 감소(減少)시켰다.

• Journal of Biosystems Engineering
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• 제27권3호
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• pp.195-202
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• 2002

In order to make a winter cereal wrap silage, a tractor attached round bale wrapper was developed locally. Its specific structure and various functions were reported in the last submitted paper. In this study a control system of bale wrapper combining with the actuators of various processes was developed to make round bale wrapper compatible in the field. Also. its performance was tested by making the rye round bale. The results can be summarized as fellow. 1. The field capacity of round bale wrapping was investigated around 0.5 ha/hr, and the operating time of bale wrapper was about 3 min for each 500kg round bale 2. Plastic film which has maximum elongation rate of 796% was stretched to 150∼170% of original length and was lessened to 80∼90% of original width. 3. In the quality test of bale produced by developed bale wrapper, there was no significant changes of moisture contents if it was wrapped more than 4 layers of 25 ㎛-plastic film. 4. Also. temperature of the wrapped bale was about 33$\^{C}$ in the beginning of fermentation and was stabled to 26∼29$\^{C}$ during one month or more storage. Therefore, wrapping performance of the developed bale wrapper was properly.

• 농업과학연구
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• 제29권1호
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• pp.15-23
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• 2002

관행적인 수확기인 11월 6일에 수확한 '후지' 사과는 80% 이상이 밀증상을 나타내었으나 에틸렌 발생량을 기준으로 볼 때 climacteric stage에 도달하지는 않았다. 모의 수출 전 2 개월 저장기간 중 밀증상은 점차 감소하였다. 저장기간 중 가용성 고형물 수준은 일정하지 않았으나 경도와 생체중 감소가 저장기간일 길수록 증가하였다. 저장기간에 따라 모의 수출과 소매과정을 경과시킨 과실의 품질은 전반적으로 낮아졌지만 무처리에 비하여 30 um 플라스틱 필름 포장, 에틸렌제거제 처리는 전반적으로 과실의 품질을 소매단계까지 우수하게 유지시키는 결과를 보였다. 반면에 왁스처리는 외관품질을 우수하게 유지시켰지만 갈변장해를 일으켜 바람직하지 않았다. 따라서 수출용 과실은 건조한 환경에서 장기간 수송되고 판매되므로 품질저하가 심하여 이를 방지하기 위해서는 플라스틱 필름과 같은 moisture barrier 및 에 틸렌 제거 환경으로 선적하는 것이 바람직할 것으로 판단된다.

• Archives of Plastic Surgery
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• 제43권1호
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• pp.84-87
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• 2016

Titanium micro-mesh implants are widely used in orbital wall reconstructions because they have several advantageous characteristics. However, the rough and irregular marginal spurs of the cut edges of the titanium mesh sheet impede the efficacious and minimally traumatic insertion of the implant, because these spurs may catch or hook the orbital soft tissue, skin, or conjunctiva during the insertion procedure. In order to prevent this problem, we developed an easy method of inserting a titanium micro-mesh, in which it is wrapped with the aseptic transparent plastic film that is used to pack surgical instruments or is attached to one side of the inner suture package. Fifty-four patients underwent orbital wall reconstruction using a transconjunctival or transcutaneous approach. The wrapped implant was easily inserted without catching or injuring the orbital soft tissue, skin, or conjunctiva. In most cases, the implant was inserted in one attempt. Postoperative computed tomographic scans showed excellent placement of the titanium micro-mesh and adequate anatomic reconstruction of the orbital walls. This wrapping insertion method may be useful for making the insertion of titanium micro-mesh implants in the reconstruction of orbital wall fractures easier and less traumatic.

• 한국생물환경조절학회:학술대회논문집
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• 한국생물환경조절학회 2007년도 춘계 학술대회 및 정기총회
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• pp.235-239
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• 2007

• Journal of Biosystems Engineering
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• 제39권3호
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• pp.194-204
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• 2014

Purpose: The aim of this study was to develop long-term storage technology for Chinese cabbage in order to extend the period of availability of freshly harvested products. The scope of the paper deals with the use of a cooler with a remote monitoring and control interface in conjunction with use of packaging film. Methods: A cooler with a real time monitoring system was designed as a low-temperature storage facility to control temperature and relative humidity (RH). The effects of storage in high-density polyethylene (HDPE) plastic boxes, 3% chitosan dipping solution, polypropylene film (PEF) with perforations, and mesh packaging bags on physiological responses were investigated. The optimal storage temperature and humidity for 120 days were below $0.5^{\circ}C$ and 90%, respectively. Physiological and biochemical features of cabbage quality were also analyzed: weight loss, texture, and sugar salinity, chlorophyll, reducing sugar, and vitamin C contents. Results: The cooler with a remote monitoring and control interface could be operated by an HMI program. A $0.5^{\circ}C$ temperature and 90% humidity could be remotely controlled within the cooler for 120 days. Postharvest freshness of Chinese cabbages could be maintained up to 120 days depending on the packaging method and operation of the remote monitoring system. In particular, wrapping the cabbages in PEF with perforations resulted in a less than a 5% deterioration in quality. This study provides evidence for efficient performance of plastic films in minimizing post-harvest deterioration and maintaining overall quality of cabbages stored under precise low-temperature conditions with remote monitoring and a control interface. Conclusions: Packaging with a modified plastic film and storage in a precisely controlled cooler with a remote monitoring and control interface could slow down the physiological factors that cause adverse quality changes and thereby increase the shelf life of Chinese cabbage.

• 한국식물병리학회지
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• 제12권2호
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• pp.219-255
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• 1996

사과 겹무늬썩음병의 주 전염원은 가지 병반에서 형성되는 자낭포자 및 병포자이므로, 가지에서의 포자형성 또는 포자의 분산을 화학적 또는 물리적 방법으로 저해할 수만 있다면 효과적으로 병을 방제할 수 있을 것으로 생각했다. 전염원을 줄이기 위한 첫 번째 시도로 1992년 이른봄 가지에 형성된 사마귀를 호미로 제거한 결과, 병포자의 분산과 과실발병 억제효과에 있어서 무처리와 유의적인 차이가 인정되지 않았다. 두 번째 시도로 포자의 분산을 막기 위해 1993년 이른봄에 겹무늬썩음병에 걸린 가지를 비닐필름으로 감고 5월부터 9월까지 20일 간격으로 살균제를 살포한 결과, 통계적으로 유의성이 인정되는 병 방제효과가 있었고, 나무의 생육에 있어서도 콜크층이 이상 비대하는 것 이외에 별다른 이상이 없었다. 이 개념을 더욱 발전시켜 1994년 이른봄에는 병든 가지를 수용성 고분자 물질인 polyvinyl alcohol로 도포하고 수배 분산 포자의 수를 조사한 결과, 포자의 분산량이 크게 줄어져 실용화의 가능성이 시사되었다.

• 농업과학연구
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• 제39권1호
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• pp.1-8
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• 2012

Rapid loss of grape berry quality after harvest occurs due to poor postharvest management. Understanding physiological properties between cultivars is required to develop practical technologies to control fast quality deterioration of tables grapes. Physiological characteristics of whole cluster, rachis and berries were examined to find their effects on postharvest behaviour of table grapes. 'Tamnara' showed high respiration rate and browning of rachis compared to 'Campbell Early'. Weight loss of rachis of 'Cheongsoo' was highest of three cultivars. Berry decay in 'Cheongsoo' begins at the connection portion between peduncle and berry, and berry decay of 'Cheongsoo' was the most severe among three cultivars. Precooling at $0^{\circ}C$ showed better results than cooling at $10^{\circ}C$ regardless of cultivars but cooling effect decreased when simulated marketing period increased up to 10 days. Plastic film wrapping was effective on reducing decay in general but not at higher marketing temperature. For successful commercialization of newly developed grapes, the inhibition technology of rachis browning in 'Tamnara' is required and decay control in 'Cheongsoo' through establishment of cold chain system is recommended.

• 농업과학연구
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• 제40권3호
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• pp.197-202
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• 2013

This study was aimed to find the storage potential of low temperature adapted shiitake mushroom under freezing temperature ($-3^{\circ}C$). Fresh shiitake mushroom was harvested at late Feb. and cooled to target temperature, $-3^{\circ}C$ in the cooling room for 24 hr. Cooled mushroom were then placed in plastic boxes, wrapped with plastic film ($30{\mu}m$), and stored at $-3^{\circ}C$ for 2 months. Weight loss of mushroom was ranged from 2.1 to 3.2%. Dry weight per unit fresh weight, however, was slightly increased because of moisture loss. Firmness of fruit body increased from $0.95kg/cm^{-2}$ (before storage) to $1.13kg/cm^{-2}$ (after 2 month storage). About half amount of starch was lost during 2 month storage. The amount of total and reducing sugars remained relatively constant. After storage, freshness of mushroom was recovered by thawing treatment. When recovered mushroom were packaged with styrofoam tray and PVC wrapping, and exposed to ambient and $10^{\circ}C$, respectively, brown spot on the gill of fruit body was found and slight decay symptom was also found at ambient temperature only but not at $10^{\circ}C$. Results indicated that low temperature adapted shiitake mushroom has a storage potential under freezing temperature ($-3^{\circ}C$). Freezing storage technology of fresh shiitake mushroom will contribute the increase of storability up to 2 months.

• 한국포장학회지
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• 제29권2호
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• pp.119-128
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• 2023

봄배추 저장을 위한 최적의 전처리 및 저장 조건을 확립하고자 봄배추의 적입방향과 예건/예냉 처리 및 HDPE / PVC 필름을 이용한 파렛트 단위의 modified MAP 처리하여 봄배추를 저온저장고에 저장하면서 중량감모율, 정선손실율, 수분함량, 경도, 색도, 가용성고형물함량, 관능검사 등을 비교 분석하였다. 대조구와 비교 시 예건/예냉 및 MA 포장재 처리는 중량감모와 정선손실을 억제시켰는데 이는 전처리 및 포장 처리가 신선도 유지와 탈습 억제에 적절한 영향을 미치는 것으로 생각되었다. 관능검사 결과 대조구의 경우 6주까지 판매가능한 marketable 상태를 유지하나 처리구의 경우 9주까지 5점 이상으로 장기저장이 가능한 것으로 나타났다. 배추 저장 시 선도유지 효과와 작업성 및 경제성을 동시에 고려할 경우 품질에서 미세한 차이가 나타났지만, 적입 방식 측면에서는 정방향으로 적입하는 것이 효율적인 것으로 검토되었다.