• 생약학회지
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• 제34권1호통권132호
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• pp.91-99
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• 2003

Ras proteins play an important role in intracellular signal transduction pathways involved in cell growth and the mutated twas genes have been found in thirty percent of human cancers. Ras proteins (H-, K- and N-Ras) are small guanine nucleotide binding proteins that undergo a series of posttranslational modifications including the farnesylation onto cysteine 186 at C-terminal of Ras by farnesyl protein transferase (FPTase). This is a mandatory process for retention of transforming ability. Therefore, inhibitors of FPTase have a promising to be effective antitumor agents. In our screening program for FPTase inhibitors, the methanol extracts of 193 plants were screened for the inhibitory activity against FPTase partially purified from the rat brain. Extracts of 7species plants including Areca catechu, Saururus chinensis, Curcuma longa, Artemisa princeps, Paeonia suffruticosa, Spatholobus suberectus, Cinnamomum cassia, Cinnamomum japonicum inhibited more than 60% of FPTase activity at a concentration of $100\;{\mu}g/ml$.

• 한국환경생태학회지
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• 제33권1호
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• pp.52-63
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• 2019

일본 특별천연기념물로 지정된 후쿠오카현(福岡?) 카스야군(粕屋郡) 다치바나산(立花山) 일원의 녹나무군락지를 대상으로 식생구조 특성을 분석했다. 본 조사지의 녹나무는 교목층(수고 약 30m, 평균흉고직경 92.79cm)에서 우세했으나, 아교목층과 관목층에서는 출현하지 않았다. 아교목층과 관목층에는 녹나무의 경쟁종이자 난온대 천이 후기종인 구실잣밤나무 후박나무 참식나무 생달나무 등이 주로 분포했다. 또한 이곳은 종다양성이 전반적으로 낮아, 전형적인 상록활엽수림과 다른 식생구조를 보였다. 이는 과거 귀한 가치가 있던 장뇌(樟腦)를 생산하기 위해 적극적으로 녹나무를 조림하여 보호 육성했기 때문으로 짐작된다. 이곳은 장뇌 원료를 채취하지 않으면서 90년 동안 인위적 관리가 없었는데도 독특하게 식생천이가 진행되지 않았다. 이는 녹나무가 수관층을 압도적으로 우점하여 숲틈이 발생되지 않아 식물종의 유입이 제한되고, 녹나무의 타감효과로 인해 치수 발아가 방해된 것이 원인으로 생각된다.

• Journal of the Korean Wood Science and Technology
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• 제50권6호
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• pp.414-426
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• 2022

The Lauraceae family has commercial uses, such as in the food, pharmaceutical, and perfume industries. This study was conducted to investigate anti-asthmatic activity of essential oils from the seven species in the Lauraceae family. The essential oils were extracted from the leaves of seven species, and the chemical composition was investigated by gas chromatography-mass spectrometry. The major constituents of essential oils differed depending on the species, even if they belonged to the same family. The main constituents were camphor (89.09%) in Cinnamomum camphora, linalool (26.91%) in Cinnamomum cassia, 1,8-cineole (23.90%) in Cinnamomum japonicum, d-limonene (10.27%) and β-eudesmol (10.03%) in Lindera obtusiloba, δ-cadinene (13.85%) and α-phellandrene (11.57%) in Machilus japonica, cis-,trans-β-ocimene (13.80% and 12.06%) and elemol (11.46%) in Neolitsea aciculata, and cis-β-ocimene (37.94%) and sabinene (24.91%) in Neolitsea sericea. The anti-asthmatic activity of essential oils was investigated using the lipopolysaccharide-induced NCI-H292 cells. The relative expression levels of the pro-inflammatory cytokines [interleukin (IL)-1β and IL-6] and mucus gene (MUC5AC and MUC5B) were significantly reduced by essential oils from seven species in the Lauraceae family. Among the seven essential oils, the essential oil from L. obtusiloba had the most superior anti-asthmatic activity. These results suggest that the essential oil of L. obtusiloba leaves could be used as an agent to suppress mucus hypersecretion.

• 한국가구학회지
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• 제20권1호
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• pp.15-20
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• 2009

Marvelous calligraphy-woodcarving artwork was made by using the mysterious beauty of anatomical structure of wood. The wooden artwork uses not only beautiful external appearance of wood, but it also uses the mysterious beauty of anatomical micro structure of wood which can only be observed through optical microscope or scanning electron microscope. The characteristics of anatomical structure of wood were presented through various carving techniques. The used wood species for the artwork include Quercus acutissima Carruth., Cinnamomum japonicum Sieb., Betula davurica PALL, Magnolia kobus A.P.DC, Populus maximowiczii HENRY, Betula schmidtii REGEL and Plerocaya stenoptera DC. These various types of woodcarving techniques are anticipated to be applied to the techart marketing for architecture as a field of environment art.

• The Korean Journal of Ecology
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• 제6권3호
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• pp.208-226
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• 1983

The vegetation of Odongdo island was surveyed over twenty-nine times from April, 1982 to August, 1983. This island is located at 127。46'05'∼127。39'37'E. longitude and 34。40'20'∼34。48'14'N. latitude. The vegetation of this island consisted of 94 families, 261 genera, 314 species, 53 varieties and 6 formae. And among them were 170 species of woody plants and 203 species of herbs. The community of evergreen broad-leaved trees comprised a total of 44 species including Sasa coreana Nakai and camellia japonica L. and the distribution of evergreen broad-leaved trees was good in this island as a whole. Sasa coreana Nakai, Castanopsis cuspidata var. sieboldii Nakai, Ficus erecta Thunb., Ficus nipponica Fr. et Sav, Stauntonia hexaphylla (Thunb.) Decne, Cinnamomum japonicum Sieb., Machilus thunbergii S. et Z., Lozoste lancifolia (S. et Z.) Bl., Ilex intergra Thunb., Camellia japonica Thunb., Hedera rhombea Bean and Ardisia japonica Bl. etc. in this island were autochthonous flora and their preservation is required.

• 생약학회지
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• 제33권1호통권128호
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• pp.69-73
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• 2002

The methanol extracts of 162 herbal medicines were screened for the inhibitory activity against VHR dualspecificity protein tyrosine phosphatase (DS-PTPase). Seventeen medicinal plants, Scutellaria baicalensis, Cuscuta chinensis, Caesalpinia sappan, Arecae pericarpium, Rubus coreanus, Machilus thunbergii, Amsonia elliptica Cinnamomum cassia, Arisaema erubescens, Pueraria thunbergiana, Dendrobium moniliforme, Mentha arvensis, Peucedanum japonicum, Salvia miltiorrhiza, Leonurus sibiricus, Siegesbeckia orientalis, Prunella vulgaris showed potent VHR DS-PTPase inhibitory activity.

• Journal of Plant Biology
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• 제27권2호
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• pp.51-60
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• 1984

Jisimdo is an island where evergreen broadleaved forests are well preserved. Soil environments and forest structures of Jisimdo were investigated, and an actual vegetation map and profile diagrams were drawn out. The natural vegetation of Jisimdo was divided into two stand units, one was evergreen broadleaved forest and the other was Pinus thunbergii forest. 26 species were identified as evergreen broadoeaved trees, and among them, Camellia japonica was the dominont of the tree layer of evergreen broadleaved forest. Profile diagram shows that Camellia japonica, with average height of 7∼8m, formed lower tree layer, and laurels like Cinnamomum japonicum, Machilus thunbergii, and Neolitsea sericea formed upper tree layer. In Pinus thunbergii forest, plants of shrub and herb layers were abundant because of much light penetrated into the forest floor, and these layers were largely composed of evergreen broadleaved trees. This fact shows the possibility of succession from Pinus thunbergii forest into evergreen broadleaved forest. Jisimdo is geographically adjacent to Jangseungpo and Okpo, and this increases the economic value of Jisimdo as a place of public resort. It will be necessary from being destroyed by land development and human interferences.

• 농업생명과학연구
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• 제46권3호
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• pp.27-36
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• 2012

지심도는 한려해상국립공원내 거제 해금강지구에 속하며 경남 거제시 일운면 옥림리에 위치하고 있다. 본 조사는 지심도 탐방로를 따라 식생구조를 파악하기 위하여 26개 조사구(단위면적$100m^2$)를 설치하여 조사를 실시하였다. 대부분의 지역에서 동백나무가 우점하고 있었으며 일부지역에서 곰솔과 머귀나무가 우점하고 있었다. 수종간의 상관관계에서는 조록나무와 광나무; 왕작살나무와 사스레피나무; 육박나무와 생달나무; 육박나무과 센달나무 등의 종간에는 높은 정의 상관이, 육박나무과 곰솔; 머귀나무와 구실잣밤나무 등의 수종들 간에는 정의상관이 인정되었고, 수종들 간에는 부의 상관이 나타나지 않았다. 조사지의 종 다양도는 0.519~1.022로 국립공원 내 다른 지역에 비해 다소 낮은 것으로 나타났다. 지심도의 탄약고 주변에 환경부에서 지정한 희귀 및 멸종위기야생식물 II 급인 애기등이 10개체가 출현하였는데, 이들에 대한 지속적인 모니터링을 통해 훼손대책을 강구할 필요가 있었다.

• 한국환경생태학회지
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• 제10권1호
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• pp.87-102
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• 1996

한반도 난대기후대의 식생구조를 연구하기 위하여 남해안 도서지방의 상록활엽수림 지역에 52개 조사구를 설치하였다. 난대상록활엽수림은 지리적 격리와 인위적 교란에 의해 지역간 식생구조가 매우 상이하였다. 조사지의 식생들은 대체적으로 자연적 식생천이가 이루어진 상록활엽수림 집단, 장기간 훼손되었거나 관리되어온 상록활엽수림 집단, 그리고 상록활엽수종으로 천이되고 있는 조림식생 집단으로 구분되었다. 52개 조사구에서 80% 이상의 상재도를 보인 수종은 후박나무, 사스레피나무, 마삭줄, 생달나무, 광나무 등이었다. 난대기후대의 극상군락이라고 추정되는 육박나무군락은 주도와 애도에 잔존하고 있었다. 과거 교란이 있었던 해안지역에서는 구실잣밤나무로 이차천이가 예상된다.

• 한국자원식물학회지
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• 제21권4호
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• pp.237-248
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• 2008

자생 상록활엽수의 부위별 재료에서 추출한 주요 정유성분으로 광나무의 꽃에는 hotrienol(9.21%), 돈나무의 잎에는 undecane(32.12%), 붓순나무의 잎에는 1,8-cineole(45.32%), 새덕이나무의 잎에는 ${\gamma}$-terpinene(15.62%), 생달나무의 잎에는 1,8-cineole(14.66%), 차나무의 잎에는 2-acetyl-5-methylfuran(54.51%), 황칠나무의 잎에는 ${\gamma}$-elemene(18.59%) 등의 성분함량이 특히 높음을 알 수 있었다.