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동물 경조직 단백 성분의 조성과 생리기능에 관한 연구 - 우각 수우각 서각에서 분리한 겸 단백의 조성에 대하여
이승기,김영은,Lee, Seung-Ki,Kim, Young-Eun 생화학분자생물학회 1974 한국생화학회지 Vol.7 No.2
동물 경조직 단백에 관한 연구의 일환으로 3종의 동물의 각질(우각, 수우각, 서각)을 각각 채취하여 Gillespie 등의 방법에 의하여 0.1 M-thioglycolate로 $400^{\circ}C$에서 keratin을 추출한 후 S-carboxymethyl (SCMK) 유도체를 합성하였고 $\frac{1}{10}$ N-HCl 로 등전점 (pI 4.7~5.05)의 범위에서 침전된 단백을 각각 분리하였다. 추출된 경단백의 수득량은 건조 중량으로 16~30%이었다. 추출된 keratin의 아미노산 조성은 3종 공히 18종이었으며, 그 조성비의 차이는 별로 없었으나 단 우각에서 추출된 단백질의 Lysine 함량은 2.67%로 수우각 5.57%, 서각 4.99%에 비하여 현저한 차이가 있었으며, 우각의 S-carboxymethyl cysteine의 함량은 9.41%로 수우각 6.06%, 서각 5.96%에 비해 크므로 우각 keratin의 disulfide bridge에 의한 cross-linking 정도가 수우각, 서각에 비해 크다는 것 을 나타내고 있다. 추출 단백의 monosaccharide, sialic acid, hexosamine, 및 uronic acid의 조성을 분석한 결과 이들 총 함량을 표시하면 추출 단백질의 건조중량에 대하여 우각은 1.38%, 수우각 0.47%, 서각 1.04%이었다. Sialic acid의 함량은 추출 단백의 건조중량에 대하여 gm 당 우각 $1.26{\mu}mol$, 수우각 $0.29{\mu}mol$, 서각 $0.96{\mu}mol$로 나타났다. Hexosamine 분석에서 3종 공히 galactosamine은 검출 되지 않고 glucosamine만이 검출?瑛만? 또한 uronic acid 분석결과 glucuronic acid는 3종 공히 검출되지 않았고 galacturonic acid만이 검출되었다. 또한 중성당의 조성은 우각 및 수우각에는 glucose, galactose, xylose, fucose가 서각에는 glucose, mannose, ribose가 각각 검출되었다. We have previously reported that the abstinence syndrom of narcotic addicts was relieved by the protein extracts of animal hard tissue (from Manis pentadactyla). The protein extracts of the hard tissue were found to be a sort of keratin. Keratins were extracted from three species of animal horns (bovine horn, water buffalo horn and rhinoceros horn) with 0.1 M-Thioglycolate at $40^{\circ}C$ and S-carboxymethyl derivatives (SCMK) of the keratin were synthesized by the method of Gillespie and his co-workers. The yields of the keratin derivatives were in the range of 16% to 30% of the dry weight of the horns. In an attempt to elucidate and compare the compositions of the keratin derivatives, the analysis for amino acids, monosaccharides. hexosamines, uronic acids, sialic acids among bovine horn, water buffalo horn, and rhinoceros horn, were performed. Eighteen kinds of amino acids were found in the three keratin derivatives and there were no differences in the composition among them, with the exception of lysine contents of bovine horn protein extracts (2.67%), which was distinctively lower than those of water buffalo horn protein extracts (5.57%) and those of rhinoceros horn protein extracts (4.99%). The amounts of carboxymethyl cysteine of bovine horn are twice of those of water buffalo horn and those of rhinoceros horn. In view of these results, it is presumed that the crosslinking rate of bovine horn keratin by cystine disulfide bridge is higher than those of water buffalo horn and Rhinoceros horn. The conjugated components of the keratin derivatives, such as monosaccharides, sialic acids, hexosamines, and uronic acids were totally contained 1.38% in bovine horn keratin, 0.47% in water buffalo horn keratin and 1.04% in rhinoceros horn keratin. There are some similarities among the keratin derivatives of the three species, such as these keratins do not contain galactosamine but glucosamine, and also the existance of glucuronic acid in these keratins is not detected but galacturonic acid. The sugar moieties of these proteins consisted of glucose, galactose, xylose, fucose in bovine horn protein extracts; glucose, galactose, xylose, fucose in water buffalo horn protein extracts; glucose, mannose, ribose in rhinoceros horn protein extracts.
동물 경조직 단백 성분의 조성과 생리기능에 관한 연구 우각 수우각 서각에서 분리한 경단백의 조성에 대하여
이승기,김영은 ( Seung Ki Lee,Young Eun Kim ) 생화학분자생물학회 1974 BMB Reports Vol.7 No.2
We have previously reported that the abstinence syndrom of narcotic addicts was relieved by the protein extracts of animal hard tissue (from Manis pentadactyla). The protein extracts of the hard tissue were found to be a sort of keratin. Keratins were extracted from three species of animal horns (bovine horn, water buffalo horn and rhinoceros horn) with 0.1 M-Thioglycolate at 40℃ and S-carboxymethyl derivatives (SCMK) of the keratin were synthesized by the method of Gillespie and his co-workers. The yields of the keratin derivatives were in the range of 16% to 30% of the dryweight of the horns. In an attempt to elucidate and compare the compositions of the keratin derivatives, the analysis for amino acids, monosaccharides, hexosamines, uronic acids, sialic acids among bovine horn, water buffalo horn, and rhinoceros horn, were performed. Eighteen kinds of amino acids were found in the three keratin derivatives and there were no differences in the composition among them, with the exception of lysine contents of bovine horn protein extracts(2.67%), which was distinctively lower than those of water buffalo horn protein extracts(5.57%) and those of rhinoceros horn protein extracts (4.99%). The amounts of carboxymethyl cysteine of bovine horn are twice of those of water buffalo horn and those of rhinoceros horn. In view of these results, it is presumed that the crosslinking rate of bovine horn keratin by cystine disulfide bridge is higher than those of water buffalo horn and Rhinoceros horn. The conjugated components of the keratin derivatives, such as monosaccharides, sialic acids, hexosamines, and uronic acids were totally contained 1.38% in bovine horn keratin, 0.47% in water buffalo horn keratin and 1.04 in rhinoceros horn keratin. There are some similarities among the keratin derivatives of the three species, such as these keratins do not contain galactosamine but glucosamine, and also the existance of glucuronic acid in these keratins is not detected but galacturonic acid. The sugar moieties of these proteins consisted of glucose, galactose, xylose, fucose in bovine horn protein extracts; glucose, galactose, xylose, fucose in water buffalo horn protein extracts; glucose, galactose, mannose, ribose in rhinoceros horn protein extracts.
SURF 기반 실시간 영상인식 최적화 시스템 설계 및 구현
이승기(Seung-Gi Lee),박진렬(Jin-Lyul Park),김영진(Young-Jin Kim),최승환(Seung-Hwan Choi) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.6
There has been research about visual recognition for video surveillance and various algorithms are advancing. This paper proposes a optimized system designed to improve rate of visual recognition using SUHF(Speed Up Robust Feature) algorithm that has been widely used with a scale and rotation invariant feature descriptor. We have also implemented visual recognition system using constraints of properties of homography matrix and RANSAC(Random Sample Consensus) for removing mismatched feature points.
논문 : 농산물,식품가공공학 ; 구기자 품질향상을 위한 적정 건조조건 구명
이승기 ( Seung Ki Lee ),김웅 ( Woong Kim ),김훈 ( Hoon Kim ),이효재 ( Hyo Jae Lee ),한재웅 ( Jae Woong Han ) 한국농업기계학회 2011 바이오시스템공학 Vol.36 No.4
This study was carried out to define the optimum drying conditions for Lycium chinense Miller as a useful healthy food, because recently the cultivation area and yield of this fruit are increased. The experiments of two varieties were performed at the temperature of 45℃, 50℃, 55℃ and 60℃. The drying ratio was the slowest and quality was the best at the drying temperature of 45℃. The drying temperature was higher, drying ratio was more faster and the quality became worse. The difference of drying ratios between the varieties was insignificant. The energy consumption per hour was the minimum at the drying temperature of 45℃, but the total energy consumption was the maximum for the long drying time. Also, the energy consumption at the drying temperature 50℃, 55℃ and 60℃ was not very different from others. Considering the drying ratio, quality and energy consumption, the drying time of 36 hours at the drying temperature of 50℃ was the most optimum condition.