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해수 염 처리에 의한 유채의 지방산 조성과 무기이온 수준 변화
이영화 ( Yong Hwa Lee ),이태성 ( Tae Sung Lee ),김광수 ( Kwang Soo Kim ),장영석 ( Young Seok Jang ),조현준 ( Hyun Jun Cho ),남상식 ( Sang Sik Nam ),서세정 ( Sae Jung Suh ),박광근 ( Kwang Geun Park ) 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.4
Effects of different salinity levels (Ground water and EC 4, 8, 16 dS m-1) on six Korean rapeseed cultivars and four lines were examined. Plant height, dry weight and seed yields decreased approximately linearly as salinity levels increased. Under various salinity levels, Tammiyuche, Tamlayuche, and Sunmang had the highest seed yields of all the cultivars or lines examined, whereas Naehanyuche and Mokpo#114 had the lowest. In addition, proline content dramatically increased under seawater treatment of EC 8 and 16 dS m?1, whereas the level of proline in EC 4 dS m?1 was similar to the control indicating that the plant growth was significantly affected at EC 8 dS m?1 and above. Furthermore, under the three different salinity levels, fatty acid compositions and mineral nutrition accumulation in the rapeseed were investigated. Oleic acid content increased slightly at EC 4 dS m?1, when compared to control plants. The composition of other fatty acids was almost not changed. Absorption rates of mineral ions were determined for the six cultivars and four lines. Salinity significantly increased Na+ and Mg2+ in leaves, whereas it reduced K+. Overall plant response depends on the kinds of salts contributing to salinity.
한국 유채 6 품종의 개화기 침수처리에 따른 습해반응 분석
이영화 ( Yong Hwa Lee ),이태성 ( Tae Sung Lee ),김보빈 ( Kwang Soo Kim ),하수옥,김광수,장영석 ( Young Seok Jang ),최인후 ( In Hu Choi ) 한국국제농업개발학회 2014 韓國國際農業開發學會誌 Vol.26 No.3
Soil waterlogging is a serious constraint to crop production. In this study six Korean rapeseed varieties (‘Sunmang’, ‘Tammi’, ‘Tamla’, ‘Naehan’, ‘Youngsan’, and ‘Halla’) were subjected to waterlogging treatments (3, 6, 9, and 12 days) during flowering stage. We investigated physiological responses, yield components, and seed yields of six rapeseed varieties. Three days of waterlogging treatment on six different varieties showed no differences, when it compared with control plants. However, four to nine days of waterlogging treatments caused flowering shoots to bend and break, which appeared to be the most prompt and serious waterlogging response. Secondary branches were developed from the broken flowering shoots. Waterlogging for six days and more over during flowering stage decreased plant height, yield components (pod number, seed number, 1,000 seed weight), and seed yields, significantly. Seed yields of six varieties after six days of waterlogging were reduced to ‘Sunmang’ (54%), ‘Tammi’ (35%), ‘Tamla’ (33%), ‘Naehan’ (78%), ‘Youngsan’ (70%), and ‘Halla’ (32%), respectively, when compared to non-waterlogging control. However, fatty acid compositions of the six rape varieties were not almost affected by waterlogging treatments. Overall, ‘Youngsan’ variety was shown to be the most resistant to waterlogging stress among the six varieties.
유채 종간잡종 F1과 F2 집단의 종자크기 및 지방산 조성 변화
이영화 ( Yong Hwa Lee ),이태성 ( Tae Sung Lee ),김광수 ( Kwang Soo Kim ),서태철 ( Tae Cheol Seo ),장영석 ( Young Seok Jang ),이경보 ( Kyeong Bo Lee ) 한국국제농업개발학회 2015 韓國國際農業開發學會誌 Vol.27 No.2
Seed size is an important component of yield in rapeseed (Brassica napus L.). In this study seed size (determined by 100-seed weight) in six rapeseed crosses between B. napus (maternal (♀) variety: Tammi, Tamla, Halla, Mokpo CGMS) and B. rapa (paternal (♂) variety: Sarso, Sarson, Sarsyun) were analyzed including parents and F1 and F2 generations. Differences in the mean 100-seed weight of F1 and F2 generations were detected in six crosses (Mokpo CGMS × Sarso, Mokpo CGMS × Sarson, Tammi × Sarsyun, Tammi × Sarson, Tamla × Sarsyun, Halla × Sarsyun). Mean 100-seed weight was highest in Tammi × Sarsyun cross. Several lines in F2 generations of three cross combinations (Tammi × Sarsyun, Tamla × Sarsyun, and Halla × Sarsyun) showed about 0.7g of 100-seed weight. Fatty acid compositions in the three cross combinations were further analyzed. The large seed lines were accompanied by a simultaneous increase in erusic acid that derived from paternal parents. Based upon these results, large rapeseed seed lines with low-erusic acid would be selected in subsequent generations.
이영화(Lee, Yong-Hwa),이태성(Lee, Tae-Sung),장영석(Jang, Young-Seok),김광수(Kim, Kwang-Soo),조현준(Cho, Hyun-Jun),김덕근(Kim, Deog-Keun),박광근(Park, Kwang-Geun) 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.11
최근 식물성 기름으로부터 생산된 바이오디젤의 보급이 활발해지면서, 그 원료의 안정적 확보에 대한 어려움과 원료가격 상승의 문제점이 발생하고 있다. 이러한 문제점을 극복하기 위한 대안으로 다양한 종류의 기름이 검토되고 있으며, 그 중 하나가 축산 폐유지를 이용한 바이오디젤의 생산이다. 그러나 축산 폐유지로부터 생산된 바이오디젤은 저온유동성이 열악하여 개선이 필요하다. 축산 폐유지 바이오디젤의 저온필터막힘점은 6{sim}8?C로 국내 동절기 품질 기준 0?C 이하를 만족하지 못한다. 본 연구에서는 축산 폐유지로부터 생산된 바이오디젤의 열악한 저온특성을 개선하기 위해 저온필터막힘점 개선 첨가제 6종을 사용하여 각각의 첨가제 혼합에 의한 저온유동성 개선 효과를 분석하였다. 각각의 첨가제를 1,000 ~ 5,000ppm 범위에서 폐돈지 및 폐우지 바이오디젤에 첨가하였다. 그 결과, Wintron을 제외한 나머지 첨가제는 폐돈지 바이오디젤의 저온필터막힘점을 최저 0?C까지 개선할 수 있었다. 하지만 폐우지 바이오디젤의 경우, 첨가제에 의한 저온유동성 개선의 효과는 매우 적었다.
이태성(Lee, Tae-Sung),이영화(Lee, Yong-Hwa),김광수(Kim, Kwang-Su),조현준(Cho, Hyun-Jun),장영석(Jang, Yong-Sek),박광근(Park, Kwang-Geun) 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.11
바이오디젤의 생산은 원료유의 순도와 촉매 종류, 알코올의 양, 반응시간, 반응 온도와 같은 다양한 조건을 이용하여 최적의 조건을 찾아내는 것이 중요하며 이는 곧 생산단가와 직결된다. 바이오디젤 전환 시 고체촉매를 이용하면 후처리 공정의 단순화가 가능하며 글리세린의 순도가 약 98%로 매우 높아져 고부가 물질 생산 원료로 활용이 가능하다는 장점이 있으며 생산 단가를 4~20% 가량 낮출 수 있다. 본 연구에서는 바이오디젤의 경제적인 생산을 위하여 정제공정을 단순화 시킬 수 있는 방안으로 3종의 고체촉매를 이용하여 동 식물성 유지의 바이오디젤로 전환 실험을 수행 하였다. 촉매 활성화를 위하여 고체촉매를 700?C에서 3~5시간 소성하고 동 식물성 유지를 이용 전이에스테르화 반응실험을 수행하여 30분 간격으로 시료를 수집 하였다. 실험 결과, 동물성 폐유지로부터 반응 120분 후에 최대 90% 이상의 지방산 메틸에스테르로의 전환율을 얻을 수 있었으며 식물성 유지인 팜유에서는 86%, 유채유에서는 64%의 전환율을 나타냈다. 동 식물성 유지의 초기 산가는 0.45~2mg KOH/g 사이로 나타났다.
이태성(Lee, Tae-Sung),이영화(Lee, Yong-Hwa),김광수(Kim, Kwang-Soo),김욱(Kim, Wook),김관수(Kim, Kwan-Su),장영석(Jang, Young-Seok),박광근(Park, Kwang-Geun) 한국신재생에너지학회 2012 신재생에너지 Vol.8 No.4
Biodiesel was produced by transesterification of vegetable oils and animal fats as an alternative to petroleum diesel. The research analysed the fuel characteristics of biodiesel, the yield of by-products and biodiesel, using several vegetable oils - rapeseed oil, camellia oil, peanut oil, sesame oil, perilla oil, palm oil, olive oil, soybean oil, sunflower oil and animal fats such as lard, tallow, and chicken fat. The results showed the yields of biodiesel made from the vegetable oils and animal fats were 90.8{pm}1.4{sim}96.4{pm}0.9% and 84.9{pm}1.1{sim}89.6{pm}1.5% respectively. Production rates and oxidation characteristics were different depending on the fats applied.
이태성(Tae-Sung Lee),이영화(Yong-Hwa Lee),김광수(Kwang-Soo Kim),장영석(Young-Seok Jang),이경보(Kyeong-Bo Lee) 한국신재생에너지학회 2015 신재생에너지 Vol.11 No.3
Biodiesel, which is most commonly derived from vegetable oils, and waste cooking oil, is an alternative to petroleumbased fuels. Since vegetable oils are also an important commodity in the food market, their prices are expected to increase substantilly given their broadening usage. Hence, waste animal fats are being considered as a promising cheap alternative feedstock for biodiesel production. Animal oil is extracted mainly from rendered tissue fats derived from livestock animals like pigs, chickens and cows. The objective of this study is to study the effects of extraction method of animal fatty tissues. Our extraction method is composed of high temperature extraction (100~140℃, 0.10 Mpa) is first applied to 40 kg of fat tissue for 2~3 h. Following this, the second step (70~ 100℃, -0.09 MPa), is applied for 60 min. This method resulted in a recovery of 69.4% of the total fat oil of the tissue. Major fatty acids from the extracted animal oils were palmitic, stearic, and oleic acid. Average contents and ranges of saturated fatty acids (SFA) palmitic acid and stearic acid, were 25.8% (23.5~28.9%), and 11.4% (7.8~14.4%), while those of unsaturated fatty acids (USFA) oleic acid and linoleic acid were 46.4% (41.6~51.7%) and 3.1% (1.4~8.1%), respectively.