• Korean Journal of Plant Resources
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• 제19권2호
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• pp.365-373
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• 2006

This study was conducted to develop the efficient propagation method of fern Phyllitis scolopendrium using In vitro culture. The influence of the origin of the donor explant sources (rhizome, stipe, three parts of blade) and the homogenization of explants was investigated. Rhizome and stipe explants showed the organogenic capacity among the five explant sources and plant regeneration was promoted by homogenization of culture material. Optimum condition for vigorous and excellent growth of multiple shoots was the half-strength MS medium with 1% sucrose concentration. Generally, addition of $NaH_2PO_4$ to media enhanced shoot multiplication. The highest rate of shoot proliferation was observed on the media containing $5{\mu}M$ NAA. Also, combination of activated charcoal $(0.1{\sim}0.2%)$ and growth regulators to growth medium prevented the formation of multiple bud primordia, 'nodule'-like bud clusters and improved the normal morphogenesis of sporopytes in P. scolopendrium.

• Korean Journal of Plant Resources
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• 제19권2호
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• pp.277-295
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• 2006

Vascular plants of Mt. Daedeok were composed of 81 families, 266 genera, 358 species, 1 subspecies, 69 varieties and 14 forma, totaling 442 taxa. Seventeen species among the 442 species were Korean endemic and 15 rare plants such as Anemone koraiensis, Eranthis stellata, Aristolochia manchuriensis, Viola albida, Viola diamantiaca, Acanthopanax senricosus, Acanthopanax chiisanense, Anagaltidium dichotomum, Scrophularia koraiensis, Adenophora grandiflora, Lilium cernuum, Lilium medeoloides, Lloydia triflora, Iris odaesanensis and Cypripedium macranthum were also investigated. The naturalized plants were 6 families, 15 genera, 16 species, totaling 16 taxa. Life form spectra was $H-D_4-R_5-e$ type and the use of plants were composed edible 43.2%, pasture 41.0%, medical 32.8%, ornamental 12.6%, respectively. The forest vegetation of Mt. Daedeok was classified Quercus mongolica community group with Betula emanii-Quercus mongolica community and typical community and Juglans mandshurica community.

• Korean Journal of Plant Taxonomy
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• 제44권4호
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• pp.257-260
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• 2014

While preparing a floristic study of Korean Pteridophytes, we discovered the following two unrecorded species from Jeju Island: Cyclosorus penangianus (Hook.) Copel. and Pteris fauriei Hieron. C. penangianus can be distinguished from other Korean congeners of the genus Cyclosorus by having exindusiate sori, toward with sinus of ultimate segments of veinlets more than 4. P. fauriei can be distinguished from other Korean congeners of the genus Pteris by having ultimate segments with entire margins, veins reaching to leaf margin and membraneous petiolar scales.

• Korean Journal of Plant Taxonomy
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• 제43권2호
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• pp.90-93
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• 2013

Asplenium septentrionale (L.) Hoffm., belonging to the family Aspleniaceae, was recently recorded for the first time in Gyeongsangbuk-do, Uljin-gun, Buk-myeon, Docheon-ri. This species is distributed in Northern America, Europe, and Asia. This species, which is related by taxa of Asplenium, is distinguished in that it possesses a leaf blade that is more or less dichotomously divided, forked 1-2(-3) times, and narrowly linear (5- 20 mm length) sori. The newly given Korean name, 'Sol-ip-go-sa-ri' reflects the presence of a linear leaf similar to Korean pine needles. A description of the key characteristics, an illustration, and photographs of the habitats of this plant are provided in this report.

• Journal of the Korean Society of Environmental Restoration Technology
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• 제5권2호
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• pp.34-38
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• 2002

This studies were performed to determine the effects of indoor relative humidity conditions on the growth of Arachniodes aristata and Pyrrosia lingua in native fern and investigate an applicable possibility of indoor plants. The response of Arachniodes aristata and Pyrrosia lingua was evaluated in growth chamber (KG-8407-87) to 3 relative humidity and 3 soils. Relative humidity was applied to 25%, 50%, 90%; soils were prepared based on soil mixture(SM), top field soil(TF), masa soil(MS). Results of experiments are as follows ; 1. Under a low humidity condition, such as 25%, Water contents, chlorophyll content, ornamental value of Arachniodes aristata and Pyrrosia lingua decreased much more a 50-90%. 2. The growth of Arachniodes aristata were best in pots under a soil mixture(SM) but Pyrrosia lingua were field top soil(FT) under 25%. It seemed that Pyrrosia lingua due to tolerance of desiccation more than Arachniodes aristata. Though these studies, coefficient of relative humidity and soil was plays an important role in Arachniodes aristata and Pyrrosia lingua growth in indoor environments.

• Korean Journal of Microbiology
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• 제43권3호
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• pp.227-231
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• 2007

Many of antimicrobial components used in the mouthwash have disadvantages such as coloring of periodontal tissue and homing sensation. To find the more biocompatible antimicrobial agent, we have screened the 2,125 kinds of natural plant extracts obtained from by the Plant Extract Bank (Daejeon, Korea). The antimicrobial activity was determined by spectrophotometric growth inhibition assay for the major dental pathogens. For the Porphyromonas gingivalis, 19 plant extracts had an antimicrobial activity, 17 plant extracts for the Prevotella intermedia, 45 plant extracts for the Haemophilus actinomycetemcomitans and 85 plant extracts for the Streptococcus mutans. Among these effective extracts, 8 kind of natural plant extracts had an antimicrobial activity for more than 3 species of dental pathogens. In our experiment, Cudrania tricuspidata, Morus bombycis and Mallotus japonicas have antibacterial effects on the all kinds of major dental pathogens. Therefore these plant extracts have a possibility to be a candidate for major antibacterial components in dental products.

• Journal of Korean society of Dental Hygiene
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• 제14권2호
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• pp.173-179
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• 2014

Objectives : The purpose of this study is to provide the basic data for the development of oral health education program and to make schoolchildren practice the right oral health care behaviors. Methods : Data were collected from 259 elementary school students including 134 boys and 125 girls in Busan from November 26 to December 20, 2012. The groups were tooth brushing group and dental clinic group. All statistical analyses were analyzed by frequency analysis and chi-square test using SPSS 18.0 program. Results : School dental clinic group showed higher awareness level of fluoride and sealant effect of prevention(p=0.000). Toothbrushing facility group showed higher awareness level of brushing tooth(p=0.011). School dental clinic group showed higher awareness level of fluoride toothpaste(p=0.000). Both school dental clinic group and toothbrushing facility group showed higher awareness level of oral health education(p=0.001). School dental clinic group showed higher awareness level for tooth brushing method after education(p=0.000). Both school dental clinic group and toothbrushing facility group showed higher level of education. Conclusions : School dental clinic group showed higher level for oral health knowledge and toothbushing facility group showed high level for oral health behavior. Both School dental clinic group and toothbrushing facility group showed higher level of oral health education and tooth brushing method after education. Both school dental clinic group and toothbrushing facility group proved to promote oral health. Activation of school toothbrushing facility is very important to change the oral health workforce.

• Journal of dental hygiene science
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• 제1권1호
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• pp.39-45
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• 2001

This study is based on the survey conducted on handicaps in randomly chosen 6 welfare facilities and medical institutions located in Seoul and Kyonggi-do. This survey has been conducted from September 20 and October 23, 1999. The results of this study are as follows: (1) 49.7% of individuals have answered that their dental health are not well maintained. (2) The number of brushing activity per day varied according to different physical and mental condition of each individual. (p<0.05) (3) 56.7% of people have answered that they have no experience with scaling. (4) 58.9% of people have answered that they have experienced toothache and gum bleeding problem. (5) 64.4% of individual have answered that they would like to attend seminars on maintaining dental health. (p<0.05) (6) 65.1% of individual infrequently visit to dental facilities. (7) 41.6% of individual possess health care card. (8) 61.8% have answered that disabilities and dental health are closely related. (p<0.05)

• Korean Journal of Plant Resources
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• 제10권4호
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• pp.275-291
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• 1997

Floristic composition and medicinal plant resources were investigated in six regions, Mt. Sorak, Mt. Jumbong, Mt. Odae, Mt. Hwaak, Mt. Taebaek, and Mt. Bangtae, represent in Kangwon province. This study was conducted from December. 1995 to October, 1997. Vascular plants in investigated regions were composed of 118 families . 529 genera, 1,138 species, 7 subspecies, 223 varieties and 43 fromae, totaling 1,411 taxa. This taxa was correspond to 34.7% of Korean flora, 4,071 taxa (Lee, 1996b),and 73.8% of Kangwon province flora, 1,913 taxa (Kangwondo, 1996), respectively. Among them, medicinal plant resources was composed of 98 families, 238 genera, 337 species, 63. varieties, and 16 formae, totaling 416 taxa (29.5% of investigated 1.411 taxa). Medicinal plant resources in each regions were distributed ranging from 211(31.4%) to 285(33.1%) taxa.

• Proceedings of the Plant Resources Society of Korea Conference
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• 한국자원식물학회 2010년도 정기총회 및 추계학술발표회
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• pp.4-4
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• 2010

식물자원은 예로부터 인류의 생활과 긴밀한 관계를 유지하면서 인류에게 삶의 터전을 제공하였으며 쾌적한 환경을 유지시켜 주는 기반이 되었음은 물론 인류의 생존을 위한 많은 재화를 공급하여 왔다. 이러한 식물자원의 가치는 인간생활의 기초적 의 식 주 뿐 만 아니라 질병치료를 위한 재료로도 활용되고 있다. 제주도는 지리적으로 아열대권 생물자원의 확보 및 관리가 용이한 위치에 있어 아열대 자원 및 동북아섬 자원의 보존과 활용을 위한 전진기지로서 최적지이며, 난대, 온대, 한대 및 아고산대에 걸쳐 2,100여종의 식물자원이 분포하는 생태계 보고로 알려져 있다. 특히, 진시황이 불로초를 찾아 신하를 보낸 곳이 제주도라고 전해지고 있는 만큼 이는 제주가 많은 자원식물이 분포하고 있음이 그 옛날에도 알려져 있었다는 증거라 할 수 있다. 제주에 분포하거나 재배되는 식물 중 약용 및 식용 식물자원으로 잠재적 가치를 갖고 있는 식물은 550여 분류군으로서, 양치식물 43종류, 나자식물 6종류, 단자엽식물 31종류, 쌍자엽식물 370종류 등이다. 이러한 자원식물 중 상록성 목본 31종류, 낙엽수 105종류, 만경류가 51종류, 초본류(1년초 또는 다년초)가 358종류이며, 뱀톱, 천남성, 박새 등 독성을 가지는 식물도 43종류가 포함되어 있다. 비록 기존 알려진 약용 및 식용 식물자원이 산업적 중요성을 가지고 있다고는 하나 그 약효나 효능의 검정이 제대로 이루어지고 있지 않은 나머지 자생식물까지 포함하면 상당수의 제주 자생식물이 자원식물로 사용될 수 있는 잠재적 가치를 가지고 있다고 할 수 있다. 최근 생활수준의 향상으로 삶의 질과 건강에 대한 관심이 집중하고 있으며, 자원식물 유래 천연물을 소재로 한 향장품 및 건강기능성 식 의약품을 포함한 기능성 상품은 안전성이 보장되며 우수한 생리활성이 있는 것으로 밝혀지면서, 자원식물을 소재로 한 기능성 상품의 개발에 대한 수요가 증가하고 있는 실정이다. 제주지역도 청정지역 제주에 자생하고 있는 자원식물의 잠재적 가치를 활용하여 미래 제주 창출을 위한 신산업육성을 위한 노력을 기울이고 있다. 특히, 제주 자원식물들의 잠재적 가치를 활용하여 부가가치를 높이기 위해 건강 뷰티 생물산업을 지역전략산업으로 추진하면서 제주 자원식물들의 새로운 잠재적 가치를 조명하고 있어 이에 대한 지역내 추진노력 및 관련 산업현황 등을 정리하여 몇가지 견해를 제기하고자 한다.