• Preventive Nutrition and Food Science
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• 제17권1호
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• pp.46-52
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• 2012

This study was performed to investigate the effects of pre-treatment and storage temperature and periods on the quality characteristics of ginger paste. The pH of the ginger paste remained constant during room temperature storage but increased with prolonged refrigerated storage periods. During five months of frozen storage, regardless of pre-treatment, the pH of most of the samples decreased slightly and then remained constant. In the color value of ginger paste stored at room temperature, the samples with and without chemical additives changed in color more prominently than fermented or pasteurized samples. Intriguingly, the color value for samples containing chemical additives changed more dramatically when stored under refrigerated conditions. However, the L, a, and b values of samples stored under frozen storage conditions did not change even after ten months. Most of the samples contained glucose and fructose, except for the fermented samples. The free sugar content of samples slowly decreased with increasing storage periods, while the organic acid content generally decreased also, regardless of sample type. Depending on pre-treatment and storage temperature, the gingerol content of the samples was either retained or decreased with prolonged storage time.

• 한국균학회지
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• 제43권4호
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• pp.286-289
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• 2015

순활물기생체인 Plasmodiophora brassicae는 병원성 검정을 위해서 반드시 뿌리혹을 장기적으로 보관하는 것이 매우 중요하기 때문에 그동안 병원성을 유지하는 것이 관건이다. 특히 기존의 방법은 100년 이상 사용되어온 저장법으로 개선이 필요하여 그 효율적인 방법을 밝히고자 하였다. 이 결과 장기적으로 병원성의 저하를 최소화하며 장기간 뿌리혹을 저장할 수 있는 방법은 $-70^{\circ}C$ 냉동고에 보관하는 것으로 확인되었고, 저장 조건은 뿌리혹을 그대로 보관하거나 뿌리혹을 갈아 균질화한 후 여러 겹의 거즈에 거른 것이 6가지 저장조건 중에 가장 효과적인 저장법으로 밝혀졌다.

• Food Science and Biotechnology
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• 제17권3호
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• pp.534-539
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• 2008

This study investigated the effects of pretreatment and storage conditions on the properties of stored chestnuts. Effects on chestnuts of refrigerated storage (RNT) and frozen storage (FNT) with no pretreatment, frozen storage after oxalic acid treatment without blanching (FON) and with blanching (FOB) were examined. Water binding capacity, swelling power, solubility, and viscosity of the starch produced from RNT, FNT, and FON were similar to those of the starch produced from control (CON). FOB showed significant differences in these properties from CON. Textural properties of starch gels prepared from stored chestnuts except FOB also were very similar to those of CON starch gels. The sensory characteristics of steamed FON and FNT were similar to those of steamed CON except in brown color and hardness. Steamed FNT tended to have higher brown color and lower hardness than steamed FON. Steamed RNT showed significant differences in all the sensory properties except in hardness and cooked chestnut flavor. Steamed FOB was significantly higher than steamed CON in water release and off-flavor. Among the storage conditions examined, frozen storage with oxalic acid treatment is recommended for the long-term storage of chestnuts.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집D
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• pp.683-688
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• 2001

Cryogenic LNG(Liquefied Natural Gas) which is stored in the cylindrical storage tanks of $100,000m^{3}$ has very complex flow phenomena and the changes of thermal properties with exterior conditions and operation mdoes. These complex thermofluid behaviors are affected by the storage, exterior conditions of LNG, design specifications and heat transfer characteristics of tanks, Also, those have influence on the stable storage and supply of LNG in the storage tanks. Thus this study performed the analysis on the 2-D heat transfer of the tank with exterior conditions, on the Cool Down Process in order to cool down the LNG Storage Tank at the initial normal state, and on the Filling Process considered for incoming and rising of LNG. The analysis on the Mixing LNG Storage was studied too. At last, the visualized program on the complex thermofluidodynamic analysis was developed on the basis of the above analyses. The development of this program becomes to be used to the basic design of the commercial tanks as well as to assure technical skill of the analysis on the thermal stability of the stored LNG in the LNG Storage Tank.

• 한국식품저장유통학회지
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• 제1권2호
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• pp.87-92
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• 1994

For the measurement of the change of respiration rate caused by the gas content of storage atmosphere which furnishes important data for the interpretation of ULO storage, GC was used. It has been shown that the respiration rate and respiratory heat generation rate of Fuji apple is more than doubled in normal low temperature storage when compared with ULO storage, and that in ULO storage the respiration rate and respiratory heat generation rate directly proportional to the concentration of O2 in storage atmosphere as well as inversely proportional to that of CO2. It was possible to establish a functional formula for the respiratory heat generation rate of Fuji apple in all the storage conditions in terms of u=-0.7638+0.0003 O2-0.0007 log(CO2)+0.1369 log(Tb) concerning temperature and the concentration of O2 and CO2

• 한국식품저장유통학회지
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• 제6권2호
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• pp.143-147
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• 1999

양파의 저장조건을 저온(2-4$^{\circ}C$, 80% RH), 움식(3-15$^{\circ}C$, 75-85% RH), 실온방열(10-23$^{\circ}C$, 75-98% RH) 및 상온(2-$25^{\circ}C$, 62-72% RH)으로 구분하여 저장 중 물리적 및 화학적 변화를 조사하였다. 저장 중 양파의 발아율은 저온 저장된 양파를 제외하고는 모두 높게 나타났으며, 저온 저장된 양파에서는 저장 11개월까지 거의 발아되지 않았다. 양파의 부패율은 실온방열 저장된 양파를 제외하고는 7개월까지 낮았으나 7개월 이후에는 모두 급격히 부패되었다. 중량감소는 기간이 경과함에 따라 계속되었으며, 저온 저장된 양파에서 가장 적게 일어났다 수분함량은 저온 및 움식 저장된 양파에서 증가하였으나 실온방열 및 상온에서 저장된 양파에서는 감소하였다. 전당과 환원당의 함량은 시간의 경과와 함께 완만하게 감소하였다. Vitamin C는 저장 중 큰 변화가 없었으나 저온 저장된 양파의 경우에는 다소 증가하였다.

• 한국식품과학회지
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• 제22권7호
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• pp.762-766
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• 1990

버터에 함유된 콜레스테롤의 산화안정성에 대한 저장조건의 영향을 연구하기 위하여 버터를 포장한 것과 포장하지 않은 것을 저온과 상온에서 암소와 광원(형광등 및 자외선등)으로 조사하면서 각각 일정기간 저장하는 동안 생성되는 콜레스테롤 산화물을 TLC에 의하여 분리 확인하였다. 포장한 버터를 상온과 저온의 암소에서, 같은 조건에서 형광등과 자외선등으로 조사하면서 각각 8주간 저장 하였을 경우 콜레스테롤 산화물은 검출되지 않았다. 또한, 포장하지 않은 버터를 상온과 저온의 암소에서 저장하였을 경우 6주까지는 콜레스테롤 산화물이 검출되지 않았으나 8주 후에는 미량의 $7{\alpha}$- 및 $7{\beta}-hydroxycholesterol$이 검출되었다. 그러나 포장하지 않은 버터를 상온에서 자외선등으로 조사하였을 때는 저장 2주에, 같은 조건에서 형광등으로 조사하였을 때는 저장 6주에 각각 $7{\alpha}-hydroxycholesterol,\;7{\beta}-hydroxycholesterol$, cholestane-triol, cholesterol epoxide가 검출되었으며, 그 생성량은 저장기간이 경과함에 따라 증가하는 경향이었다.

• 원예과학기술지
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• 제31권4호
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• pp.400-406
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• 2013

This study was conducted to investigate the growth and flowering of African marigold (Tagetes erecta L.) and salvia (Salvia splendens F. Sello ex Ruem & Schult.) seedlings before and after storage under fluorescent lamps and green LED radiation conditions with different light intensities during storage. The both seedlings were kept under a storage room controlled at $8^{\circ}C$ air temperature and $40{\pm}10%$ relative humidity conditions. Light intensities were maintained at 15 and $30{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ during storage. In lighting treatments, dry weight of African marigold at 28 days after storage was not significantly different, and decreased approximately 29% compared to pre-storage under dark treatment. There was no significant difference in the leaf area of salvia seedlings stored under dark condition compared to before storage, but the leaf area under green light radiation with higher light intensity (treatment GH) was two times greater than before storage. The survival rate after transplanting of African marigold stored under dark condition was 10%, and days to flowering increased compared to those stored under fluorescent and green light with higher light intensity (treatment FLH, GH). Comparing to before storage, growth and flowering of the both seedlings after storage were significantly promoted by the light exposure during storage. The present experimental results show that the light intensity should be decided to maintain minimum growth during lighting storage and storage quality of the seedlings such as flowering promotion and extended blooming period after lighting treatment during storage period from the above results.

• 원예과학기술지
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• 제33권5호
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• pp.633-637
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• 2015

Cucumber and paprika transplants were stored at 9, 12, 15, and $18^{\circ}C$ under dark conditions for 15 days and then grown in a greenhouse for 14 days after transplanting. To determine the effects of low storage temperature and long-term continuous darkness on the quality and vigour of transplants, we investigated the quality of transplants during storage and the growth of stored transplants after transplanting. In cucumber transplants, decreasing storage temperature reduced stem elongation and decrease in SPAD value. The quality of cucumber transplants stored at $9^{\circ}C$ was well preserved during storage, but they did not survive after transplanting due to chilling damage. Growth and development after transplanting were significantly greater when cucumber transplants were stored at $12^{\circ}C$. In paprika transplants, the quality of transplants did not significantly differ before and after storage. After transplanting, there was no significant difference in the survival rate and growth, but the number of flower buds was greater in the paprika transplants stored at lower temperatures (9 and $12^{\circ}C$). These results indicate that the responses of transplants to the conditions of low temperature and darkness differed between cucumber and paprika, and storage temperature in darkness must be controlled carefully considering species-specific responses to reduce quality deterioration during storage and improve the recovery of transplants after transplanting.

• 한국유기농업학회지
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• 제13권2호
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• pp.129-143
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• 2005

Attempting to make an economic valuation of semi-liquid manure raises various complex questions. These are the valuation under different farming conditions, cost-benefit analysis in connection with the investment requirements of different semi-liquid manure systems, different storage capacities, transportation distances and treatment procedures. In the following, there questions will be discussed : 1. What value do the different types of semi-liquid manure have under different farming conditions? 2. Which storage capacities are economically justified? 3. Under which conditions is the transport of semi-liquid manure over long distances profitable?