• 환경생물
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• 제31권1호
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• pp.10-18
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• 2013

Oil spills have occurred throughout the years of industrialization and represent a global challenge as they affect vast areas of the ocean. The toxicity of crude oil to aquatic organisms has been extensively investigated, but the potential impacts of crude oil on vertebrate development remain largely unknown. Here, we investigated the effects of dispersants used in treating a recent oil spill, as well as that of crude oil, on vertebrates by using the zebrafish (Danio rerio) model species, which has been widely used in empirical studies of both early embryonic development and adult physiology. Chronic exposure to crude oil resulted in marked developmental abnormalities, including pericardial edema, abnormal trunk vessel development, retardation of axonal branching, and abnormal jaw development. Embryonic development was affected more severely by exposure to the oil-dispersant combination than to the oil alone. Thus, the zebrafish in vivo model system suggests that dispersant treatment can have detrimental developmental effects on vertebrates and its potential impact on marine life, as well as humans, should be carefully considered in clean-up efforts at the site of an oil spill.

• 통상정보연구
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• 제13권3호
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• pp.119-142
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• 2011

제한된 석유자원으로 인해 세계적으로 석유를 확보하기 위한 경쟁이 치열하게 전개되고 있다. 급속한 경제성장과 정체된 국내석유 생산으로 인해 중국은 1993년 이후 석유 순수입국으로 전환되었다. 따라서 중국은 급속히 증가하는 수요에 대응하기 위해 해외석유자원의 안정적이고 장기적인 확보에 우선순위를 두고 있다. 이를 위해 다양한 전략 예를 들어 해외석유자원개발, 석유수입국의 다변화 등을 취해 왔다. 예를 들어 세계 최고의 외환보유고 2010년 기준으로 3조달러를 보유하고 있는 중국은 이를 활용하여 해외 석유자원 개발을 적극적으로 추진하고 있다. 이 논문은 중국의 해외석유자원개발전략을 분석하고 정책적 시사점을 제시하는 데 있다. 중국은 안정적인 석유확보를 위해 석유 생산국에 차관 공여, 해외 석유개발에 대한 해외직접투자, 석유탐사 및 생산업체의 인수합병 그리고 석유수입국의 지리적 다변화 등의 다양한 정책을 추진해 오고 있다. 또한 중국은 석유자원 확보를 위해 다른 국가와 협력보다는 공격적인 전략을 추진해 왔는데 이는 주변 국가와의 갈등과 자원개발에 대한 비용 급증을 가져왔다. 이제 중국은 장기적으로 협력적 관계를 모색해야 할 뿐만 아니라 재생에너지에 대한 투자를 확대함으로써 미래 지향적인 에너지 자원의 확보를 추진해 나갈 필요가 있다.

• 한국식품조리과학회지
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• 제21권3호
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• pp.283-289
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• 2005

To investigate the oxidative stability of the Lithospermum erythrorhizon extracted oil, we prepared extracted oil from the cultivated and wild roots of Lithospermum erythrorhizon by autoclave method with soybean oil. The oil were stored for 30 days at $60^{\circ}C$, and the peroxide value (POV), acid value (AV) and carbonyl value(CV) were measured periodically. The weight was highly decreased in the oil added roots of Lithospermum erythrorhizon during the storage period. POV of soybean oil containing wild and cultivated Lithospermum erythrorhizon was generally enhanced with prolonged storage time, with the POV of the samples being lower than 100 meq/kg.oil after 30 days of storage. However, the POV of soybean oil was higher than 100meq/kg.oil after 10 days of storage. The pattern of the changes of AV and CV of soybean oil containing wild and cultivated Lithospermum erythrorhizon, were almost constant during the experimental periods. Nevertheless, the pattern of the changes of AV of soybean oil was rapidly increased during 20 days of storage, and that of CV of soybean oil was rapidly increased duringdays of storage and then slowly increased during the remainder of the experimental period. However, soybein oil was rapidly increased during 20 days of storage and then slowly decreased during the reminder of the experimental period. The overall results suggest that wild and cultivated Lithosyermum erythrorhizon added antioxidant activities to the autooxidation of soybean oil.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.255-255
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• 2017

Sesame has been consumed for centuries as flavoring ingredient in eastern Asian countries, especially Korea. Sesame seeds have been used as health food for traditional medicine to prevent disease in Asian countries for several thousand years. Sesame seed has higher oil content (around 50%) than most of the known oilseeds. Sesame oil is rich in monounsaturated and polyunsaturated fatty acids. Extraction of sesame has developed significantly over the years. The mechanical method was an early means of separation which was physical pressure to squeeze the oil out. Nowadays, solvent extraction becomes the commonly used commercial technique to recover oil from oilseeds. In this study, we investigated extraction efficiency and quality of oil affected by cultivars and extraction methods of sesame seed. Different variables were investigated; roasting temperature ($170{\sim}220^{\circ}C$), extraction methods (solvent and physical pressure), forced ventilation system and cultivars. The Contents of B(a)P in sesame oil after roasting at $170{\sim}220^{\circ}C$ were 0.30~2.53 ppm. When we introduced forced ventilation system during roasting, B(a)P Contents were decreased up to 36%. The Oil extraction efficiency on sesame seed was statistically depending on the cultivars and extraction methods. The oil extraction yields of solvent and physical pressure extraction were 56.3% and 44.6%, respectively. Many of sesame cultivars and genetic resources are linolenic acid content of less than 0.5%. The results supported that we have developed a safe and high quality sesame oil processing methods for small and medium-sized companies.

• Applied Biological Chemistry
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• 제41권8호
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• pp.578-582
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• 1998

Grape seed oil was characterized to assess the usefulness in the food industry. Among the various oils, the initial antioxidant activity was the highest for grape seed oil. Heating the oil at $180^{\sim}C$ for 20 min retained 86% of the initial activity. Grape seed and sesame oils showed a low peroxide value, about 2, implying a less oxidative reaction. The oxidation of grape seed oil was increased to a less extent by heat-treatment than other oils. Light exposure for 1 month resulted in a slight decrease in the antioxidant activity of grape seed oil, maintaining 96% of the initial activity. Other oils were all light-susceptible and the activities decreased significantly. The peroxide values of all the oils increased by light exposure, but the extent of oxidation was still the least for grape seed oil. The addition of grape seed oil to perilla oil was very effective, in that the peroxide value was 5-times decreased by 1 : 5 composition of grape seed oil versus perilla oil. These results indicate that grape seed oil can be used as a good cooking oil or an additive for other oils.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.148-148
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• 2017

Soybean is an important economical resource of protein and oil for human and animals. The genetic basis of seed protein and oil content has been separately characterized in soybean. However, the genetic relationship between seed protein and oil content remains to be elucidated. In this study, we used a combined analysis of phenotypic correlation and linkage mapping to dissect the relationship between seed protein and oil content. A $F_{10:11}$ RIL population containing 222 lines, derived from the cross between two Korean soybean cultivars Seadanbaek as female and Neulchan as male parent, were used in this experiment. Soybean seed analyzed were harvested in three different experimental environments. A genetic linkage map was constructed with 180K SoyaSNP Chip and QTLs of both traits were analyzed using the software QTL IciMapping. QTL analyses for seed protein and oil content were conducted by composite interval mapping across a genome wide genetic map. This study detected four major QTL for oil content located in chromosome 10, 13, 15 and 16 that explained 13.2-19.8% of the phenotypic variation. In addition, 3 major QTL for protein content were detected in chromosome 10, 11 and 16 that explained 40.8~53.2% of the phenotypic variation. A major QTLs was found to be associated with both seed protein and oil content. A major QTL were mapped to soybean chromosomes 16, which were designated qHPO16. These loci have not been previously reported. Our results reveal a signi cant genetic relationship between seed protein and oil fi content traits. The markers linked closely to these major QTLs may be used for selection of soybean varieties with improved seed protein and oil content.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2002년도 제35회 춘계학술대회
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• pp.111-119
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• 2002

• 한국석유지질학회지
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• 제14권1호
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• pp.21-35
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• 2008

오일셰일이란 케로젠이라 불리는 유기물을 포함하는 세립질의 퇴적암으로 오일셰일 내에 포함되어 있는 케로젠은 적당한 온도와 압력 하에서 중질 원유와 유사한 성분을 갖는 셰일오일로 전환이 가능하다. 전 세계적으로 약 2.9조 배럴이라는 막대한 양의 오일셰일이 매장되어 있지만, 이들에 대한 개발은 아직 초기단계 수준에 머무르고 있다. 본 논문에서는 주요 오일셰일 매장지의 지질학적 특성을 소개하고, 이들 오일셰일의 최근 개발 현황과 기술 그리고 개발 가능성에 대해 정리하였다.

• Tribology and Lubricants
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• 제24권2호
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• pp.82-89
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• 2008

The purpose of this study is to develop the proto type sensor installed inside an oil filter in order to detect oil deterioration level. The sensor is made up with two concentric cylinders with constant gap in between and a filter element inside the central area. The size will be designed as similar as real oil filters. The sensor will be tested on a test rig, which is circulating engine oil, with the same size of an oil filter adapting housing as real engines'. It will be measured the capacitance of a sample engine oil, then be able to be gotten the dielectric constant. The changes in the dielectric constant could be correlated with the engine oil deterioration level if the sensor development would be completed. In this paper, it will be shown the test results carrying out under variable temperature conditions at atmosphere pressure.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2000년도 추계학술대회 논문집
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• pp.123-128
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• 2000

The ocean is now increasingly suffering from pollution mainly caused by oil spill accidents roil increasing marine transportation. It cause not only the deterioration of ocean resources but also critical damage on the ocean ecosystem. Present study is an experimental one for the development of the oil skimmer which can collect spilled-oil actively and effectively from the sea surface. As an effort of achieving it, a new type of water wheel attached nil skimmer was devised, based upon the concept of orifice. The shapes of the water wheel, blades and oil storing tank are found to be very important factors on the oil skimming performance through systematic experimental analysis. Real oil recovery test was also carried out in square tank using the oil skimmer with their optimal shapes. Quite satisfactory result are obtained from the test which showed 99% and 98% recovery rates for light oil and heavy oil in still water condition, respectively.