• Journal of Life Science
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• v.26 no.7
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• pp.782-788
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• 2016

To check the possibility of using natural extracts for cosmetic substances, we tested the bioactive effects of 11 crude extracts originating from native plants grown in the Republic of Korea on anti-oxidant and anti-wrinkle activities. When DPPH scavenging activities were measured, the crude extracts of Vitex rotundifolia, Scirpus triangulatus, S. wichurae, S. tabernaemontani, and Aeschynomene indica assays had more than 70% of DPPH scavenging activities at 100 μg/ml concentration. The data from the hydrogen peroxide scavenging assay revealed that the crude extracts from the 10 species, except for Eleocharis mamillata var. cyclocarpa, could scavenge more than 90% at 1,000 μg/ml concentration. The crude extract of V. rotundifolia had the highest xanthine oxidase scavenging activity at a 1,000 μg/ml concentration. Based on the four anti-oxidant assays, the crude extracts of V. rotundifolia, S. triangulatus, S. wichurae, S. tabernaemontani, and A. indica were shown to have excellent anti-oxidant capacities overall. In addition to the anti-oxidant capacities, the crude extract from S. wichurae exhibited high collagenase inhibitory activity, therefore, it could be a promising candidate for a cosmetic ingredient with anti-oxidant and anti-wrinkle qualities. The results of this study indicate that many wild plants native to the Korea Peninsula can be used as excellent natural substances for cosmetics based on their bioactive effects.

• Korean Journal of Pharmacognosy
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• v.44 no.2
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• pp.168-175
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• 2013

Aldose reductase (AR) plays a central role in the development of the diabetic complications. Eighty one Korean herbal medicines have been investigated for inhibitory activities on AR. Among them, fourteen herbal medicines exhibited a significant inhibitory activity compared with 3,3-tetramethyleneglutaric acid (TMG) as positive control. Particularly, Xanthium strumarium (fruit, whole plant), Ilex cornuta (stem and leaf), Vitex rotundifolia(stem), Sophora flavescens (whole plant), Platycarya stobilacea (flower) showed two times more potent inhibitory activity than 3,3-tetramethyleneglutaric acid (TMG).

• Korean Journal of Pharmacognosy
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• v.25 no.3
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• pp.214-220
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• 1994

From the Viticis Fructus n-hydrocarbons, ${\beta}-sitosterol$ $3-O-{\beta}-_D-glucoside$ and hesperidin along with the known polyoxygenated flavonoids such as vitexicarpin, artemetin and luteolin, and vanillic acid were isolated and identified by means of spectroscopic methods. HPLC analysis of the flavonoid components from the MeOH extract was established. Phytochemical analyses of the domestic plant sample and the imported ones were conducted and the flavonoid compositions of the domestic samples were greatly different from those of the imported ones.

• Ocean and Polar Research
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• v.24 no.1
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• pp.79-86
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• 2002

It was found that 14 coastal habitats in South Korea have comparetively natural vegetation. The habitats were classified into three types - intertidal flats, sand dunes, and estuaries. There were four intertidal flats, five sand dunes and five estuaries. Except for Cynodon dactylon and Tetragonia tetragonoides, all of the main halophytes and sand dune plants were found in the habitats. These two species were mainly distributed on the southern coast. This study identified coastal vegetation, such as pure stands of Suaeda japonica on intertidal flats, mixed halophyte communities around the high-water mark, pure stands of Vitex rotundifolia on stable sand dunes, mixed communities dominated by Carex kobomugi on unstable sand dunes, and pure stands of Phragmites communis in estuaries. The types of coastal vegetation may depend on sediment types, the inundation time of seawater and the stability of sediments.

• The Korean Journal of Ecology
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• v.21 no.3
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• pp.257-262
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• 1998

A syntaxonomical study about coastal sand dune vegetation in Kyungpook province was carried out. This study was accomplished by the methods of classical block-structure seeking and had-sorting of the $Z\"{u}rich-Montpellier$ School. The main purpose of this study is to clarify the syntaxonomical, synecological, syngeographical and syndynamical characteristics of coastal sand dune vegetation in Kyungpook province. The dune shrubs communities in Kyungpook province are consisted of 2 communities: Vitex rotundifolia community of southern type and Rosa rugosa community of northern type. And the dune grasslands communities are also consisted of 2 communities: Elymo-Caricetum kobomugi Ohba, miyawaki et $T\"{u}xen$ 1973 and carex kobomugi typical community. The subsidiary knowledges from this study will make possible to accumulate qualitative and quantitative information in the distribution pattern of coastal sand dune vegetation, and also will provide practical information for national biodiversity and conservation of coastal ecosystem.ecosystem.

• The Korean Journal of Ecology
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• v.22 no.6
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• pp.317-324
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• 1999

A research on the coastal mantle communities in South Korea and Japan was carried out. This study was accomplished by using syntaxa and hierarchical system of the coastal mantle communities in South Korea and Japan in terms of the Zurich-Montpellier School's method. The coastal mantle communities in South Korea and Japan are included in the Rosetalia rugosae of northern type and the Viticetea rotundifoliae of southern type, which are characterized by Rosa rugosa and Vitex rotundifolia, respectively. The coastal mantle communities in South Korea are subordinated and are considerably corresponded to those which already identified in Japan. Each syntaxon of the coastal mantle communities in South Korea and Japan is briefly characterized floristically and ecologically, and their distribution is shown on maps.

• Korean Journal of Environment and Ecology
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• v.21 no.6
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• pp.544-553
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• 2007

This study is focused on the cultivation of seedlings and cuttings of roundleaf chastetree(Vitex rotundifolia L. f.) according to the sorts of soil and fertilization methods. The results are summarized as follows: When roundleaf chastetree seedlings(aged 1-0) and cuttings(aged 1-0) were cultivated in three different kinds of soil- sand, granite soil, and yellow silt- without any fertilization, 70% of the seedlings survived in sand and granite soil, and 35% did in yellow silt; 90% of the cuttings survived in granite soil and 80% did in sand and yellow silt. The general growth of both seedlings and cuttings was good in granite soil, and sand but relatively inferior in yellow silt. Seedlings showed good stem growth while cuttings had fine root growth. In case of cultivation of seedlings with different kinds and quantities of fertilizer adjusted and with granite soil as basic soil, seedlings and cuttings survived in the experimental section where only the organic fertilizer was used as basic fertilization; in contrast, seedlings grown in the experimental section were all dead where both inorganic and liquefied fertilizer were used. Cuttings showed considerably higher survival rates than seedlings at the experimental fertilization section; particularly, the survival rate of cuttings was twice as much as that of seedlings at the experimental section with low fertilization. This study results revealed that cuttings are desirable than seedlings in general rootage, growth, adaptability to soil, and cuttings have lower demand for soil fertility in time of growing roundleaf chastetree saplings.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.8 no.6
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• pp.59-68
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• 2005

This study was carried out to investigate soil properties, ordination, and vegetation of the coastal sand dune in Sinduri, Taean-Gun. 1. The Orobanche coerulescens and Ixeris repens that are a peculiar species were found in Sinduri coastal sand dune and the Salix purpurea var. japonica that is an endemic species of korea was found in that place. The plant communities was categorized into seven groups, such as Rosa rugosa community, Vitex rotundifolia communit, Carex kobomugi community, Imperata cylndrica var. koenigii community, Carex pumila community, Artemisia capillaris community, and Calamagrostis epigeios community. 2. The soil organic matter, total nitrogen, available phosphorous concentrations, and cation exchange capacity were lower in the study sites than in forest soil of seashore. There was little difference in soil exchangeable Ca, Mg, and K concentrations between in the study site and in the forest soil of seashore. The soil pH was ranged from 5.69 to 7.63. The soil texture in the study site was sand or loamy sand. 3. The results of the correlation between Sinduri coastal sand dune community and environmental factor are as follows; the soil pH was the most effect to the community distribution, and CEC, total nitrogen, soil organic matter, and the amount of silt in soil have some correlation with community distribution. 4. The results of the correlation between Sinduri coastal sand dune community and soil characteristics are as follows; the Calamagrostis epigeios community was found in area that have high soil moisture content; the Rosa rugosa community was found in area that have high soil CEC, organic matter concentration, and total nitrogen concentration, and low soil pH; the Vitex rotundifolia community, Carex kobomugi community, and Artemisia capillaris community were found in area that have low soil CEC, organic matter concentration, and total nitrogen concentration, and high soil pH; the Imperata cylndrica var. koenigii community and Carex pumila community were found in area that have medium soil CEC, organic matter concentration, total nitrogen concentration, and soil pH.

• Korean Journal of Plant Resources
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• v.21 no.5
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• pp.374-387
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• 2008

This study was carried out to investigate the distribution of the useful resources plants and the flora of the sand dune on South Coast and Jeju Island. The flora of sand dune on South Coast and Jeju Island was investigated from February to November in 2006. Vascular plants of this area consist of total 171 taxa; 1 forma, 18 varieties, 152 species, 130 genera, 51 families. The dominant species in the vegetations of the south coast sand dune were Calystegia soldanella, Ischaemum anthephoroides, Vitex rotundifolia, Carex pumila, Carex kobomugi. It corresponds to 11.1 % of totally 4,071 taxa appeared in Korea. Useful plants of this area were investigated 113 taxa. It corresponds to 66% of collected plants in this area under our study. Among the useful plants, there are 73 taxa of edible source, 61 taxa of medicinal source, 22 taxa of pasture source, 16 taxa of ornamental source, 7 taxa of fiber source, 1 taxa of timber source. Korean endemic plants were composed 1 taxa.

• Journal of the Korean Institute of Landscape Architecture
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• v.41 no.4
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• pp.17-23
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• 2013

The purpose of this study was to provide information on management and apply it to a roadside ground cover plant understanding the capacity of calcium chloride in the plant. The experimental group was composed of the ratio control group of calcium chloride, 0.5%, 1.0%, and 3.0% in 500g of soil. Plant materials were selected and measured according to their ecological characteristics such as ground cover plant, Pachysandra terminalis, Hosta plantaginea, Trachelospermum asiaticum, Vitex rotundifolia, Euonymus japonica and Callicarpa japonica. The acidity of the amended soil was increased gradually depending on the treatment and conductivity was continually decreased. The EX-Ca increased after the treatment, but decreased in the middle of the experiment. Pachysandra terminalis, Trachelospermum asiaticum and Euonymus japonica were able to grow and survive at the ratio of 0.5%. Hosta plantaginea and Vitex rotundifolia were able to survive at the ratio of 1.0%. Hosta plantaginea, the possible state can absorb salts due to moisture and, can be applied to ground cover plants in the roadside. The growth and development of Callicarpa japonica was poor and the leaves were open to grow for calcium chloride treatment except the control group. It was concluded that Callicarpa japonica was very sensitive to calcium chloride.