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Mycobacterium fortuitum의 스테로이드 9alpha-하이드록실라제의 분리 및 부분정제
강희경(Hee Kyoung Kang) 대한약학회 1997 약학회지 Vol.41 No.5
The steroid 9alpha-hydroxylase activity has been detected in cytosol fraction, 100,00OXg supernatant of cell free extract of Mycobacterium fortuitum. The activity was not linear viith protein concentration in the assay suggesting 9alpha-hydroxylase is a multicomponent enzyme. The 9alpha-hydroxylase system was partially purified through fractional saturation of ammonium sulfate, strong anion exchange (Mono Q) column chromatography, gel filtration (Superose 12) column chromatography, and testosterone affinity gel chromatography. Ammonium sulfate 50~60% saturated fraction of the cytosol gave 9alpha-hydroxylase activity. For further purification, the half-saturated ammonium sulfate fraction was applied to Mono Q, Superose 12, or affinity gel column. The purification factors of 9alpha-hydroxylase containing fraction after Mono Q, Superose 12, and affinity gel chromatography was 13, 11, and 17 respectively.
강희경 ( Hee Kyoung Kang ),이자연 ( Ja Yeon Yi ),안상교 ( Sang Kyo Ahn ),송홍선 ( Hong Seon Song ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2014 한국환경복원기술학회지 Vol.17 No.2
This text was analyzed and investigated the morphological character, production time and germination characteristic of seed that collect in Chungnam, in order to offer the basic informations for slope restoration and revegetation using Indigofera amblyantha of wild shrub. Legume was cylindrical type and length 31.5mm, width 2.5mm, and seed number of per legume was full ripe 5.5, unripe 0.9. Seed was elliptical type and length 2.4mm, width 1.7mm, and weight of 1,000 seeds was 5.9g. Because seed matured within December and next year January, optimum time of seed production was in mid of January. In the treatment H2SO4 of 15 minutes, seed germination rate was the highest as 91.0%, and seed germination time (days) was the shortest as 6.7 days. Seed germination time by temperature was the shortest from 25°C. Therefore, seed germination of Indigofera amblyantha was very useful in the treatment H2SO4 of 15 minutes from 25°C temperature.
硏究論文 : 절개사면 녹화지역과 인접 자연지역의 식생 비교
강희경 ( Hee Kyoung Kang ),송홍선 ( Hong Seon Song ),조용현 ( Yong Hyeon Cho ),박봉주 ( Bong Ju Park ),김원태 ( Won Tae Kim ),신경준 ( Kyung Jun Shin ),어양준 ( Yang Joon Eo ),윤택승 ( Taek Seong Yoon ),장광은 ( Kwang Eun Jang 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2012 한국환경복원기술학회지 Vol.15 No.6
This study was compared to the differences in the habitat, species composition and community structure of revegetation and nature area in Korea. Plant number in plot of revegetation and nature area was 10.3 and 15.0 taxa, respectively, and coverage was 90.6 and 88.1%, respectively. Revegetation and nature area was very heterogeneous, due to low similarity index (0.38) and less common plants. Festuca arundinacea frequency (56.7%) was highest in revegetation area, and Oplismenus undulatifolius frequency (66.7%) was highest in nature area. Plant appearing of revegetation and nature area was 111 and 136 taxa, respectively. Herb appearing of revegetation and nature areas was 93 (83.3%) and 72 (52.9%) taxa, respectively, tree was 18 (16.2%) and 64 (47.1%) taxa, respectively. Plant communities of revegetation area was classified into Lespedeza bicolor, Indigofera amblyantha, Alnus sibirica, Festuca arundinacea, Eragrostis curvula, Miscanthus sinensis, Humulus japonicus, Setaria faberii, Rudbeckia bicolor, Pueraria lobata community. Plant communities of nature area was classified into Pinus densiflora, Quercus aliena, Quercus acutissima, Quercus variabilis, Quercus serrata, Castanea crenata, Pinus rigida, Robinia pseudoacacia, Populus tomentiglandulosa, Phyllostachys bambusoides community. Habitat, species composition and community structure of revegetation and nature area showed a large difference.
연구논문(硏究論文) : 녹화용 벼과식물 종자의 채종시기 및 온도별 발아특성
강희경 ( Hee Kyoung Kang ),이자연 ( Ja Yeon Yi ),조용현 ( Yong Hyeon Cho ),송홍선 ( Hong Seon Song ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2016 한국환경복원기술학회지 Vol.19 No.2
This text was experimented and investigated the optimum production time and germination characteristics of seed that collect in Korean Chungnam, in order to offer the basic informations for slope restoration and revegetation using Poaceae plant. Optimum time of seed production was mid-late October of Miscanthus sinensis, Pennisetum alopecuroides, early November to late October of Themeda triandra var. japonica and M. sacchariflorus, and mid November of Phragmites communis. Epiphytic amount of seed full ripe was the most times in mid October of M. sinensis, P. alopecuroides and M. sacchariflorus, early November of T. triandra var. japonica, and mid November of P. communis. Seed rate of maturity was the highest times in early November of M. sinensis, P. alopecuroides and M. sacchariflorus, and mid November of T. triandra var. japonica and P. communis. Germination rate by seed collection time was the highest times in early October of M. sacchariflorus, mid October of T. triandra var. japonica, early November of M. sinensis and mid November of P. communis. Germination days by seed production time was the shortest times in early November of M. sinensis and M. sacchariflorus, mid November of T. triandra var. japonica and P. communis. Optimum temperature of germination was 20~25°C in M. sinensis and P. alopecuroides, 25°C in T. triandra var. japonica, and 25~30°C in P. communis.