• Advances in Traditional Medicine
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• v.3 no.1
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• pp.1-7
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• 2003

Some Korean plants were found to inhibit HIV-1 protease activity. The extracts of Acanthopanax koreanum (stem bark), Berchemia berchemiaefolia (stem), Berchemia berchemiaefolia (bark), Distylium racemosum (leaves), Distylium racemosum (stem), Lindera erythrocarpa (leaves), Physalis alkekengi var. francheti (root), Platycarya strobilacea (stem), Rodiola rosea (root), Rosa davurica (stem), Syringa dilatata (leaves), Viburnum awabuki (stem) and Viburnum awabuki (leaves) showed significant inhibitory effect against HIV-1 protease. Camelliatannin H from Camellia japonica and uvaol from Cratagus pinatrifida were potent active inhibitors of HIV-1 protease with $IC_{50}$ values of $0.9\;{\mu}M$ and $5.5\;{\mu}M$, respectively. The cure and prevention of AIDS have been a global challenge since it was discovered in the ealy 1980s. However, the development of anti-HIV agent that can effectively treat or prevent this disease are still demanded.

• Proceedings of the PSK Conference
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• 2001.10a
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• pp.146.1-146.1
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• 2001

• Korean Journal of Environment and Ecology
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• v.7 no.2
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• pp.155-163
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• 1994

To investigate the structure and the conservation strategy of natural forest at Paekryunsa-Hyangcho kpong area in Tokyusan, 21 plots (400$m^2$) set up with random sampling method. Four groups were classified by cluster analysis. High positive correlations was proved between Tripterygium regelii and Acer tschonoskii var. rubripes, Viburnum sargentii and Betula ermanii, Corylus heterophylla var. thunbergii and Stephanandra incisa, Betula costata and Cornus controversa, Acer mono and Tilia amurensis, Tilia amurensis and Kalopanax pictum, Lonicera maackii and Viburum sargentii, and Betula ermanii, Acer tschonoskii var. rubripes and Taxus cuspidata, and Viburnum sargentii, and High negative correlations was proved between Acer pseudo-sieboldianum and Viburnum sargentii, Tripterygium regelii and Stephanandra incisa, Acer tschonoskii var. rubripes, and Stephanandra incisa. Species diversity(H') of investigated area was calculated 0.9402~1.2473. Taxus cuspidata, Betula ermanii and Abies koreana at Hyangchokpong area in Tokyusan should be conserved.

• Korean Journal of Environment and Ecology
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• v.26 no.3
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• pp.362-366
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• 2012

To explore on the defense strategies against hervivory of five Viburnum species, morphological characteristics of the leaf, leaf domatia structure and the number, herbivores insects and mites on the leaves, collected from the trees growing in Wonju-si, Pyeungchang-gun, Taebaek-si, Taean-gun, Bonghwa-gun, Sancheung-gun and Jinju-si were investigated from May 2009 to October 2011. Domatia of V. carlesii reveals pocket type, these of V. burejaeticum, V. dilatatum and V. wrightii reveal tuft type, and that of V. odoratissimum var. awabuki reveals pouch type. Domatia number per leaf proves the highest figures, 24.0/leaf for V. burejaeticum, and the lowest, 4.9/leaf for V. carlesii. Leaf surface trichomes of four Viburnum species except for V. odoratissimum var. awabuki are mainly stellate and hispid on the leaf-blade and veins, and dense stellate trichomes on the upper leaf surface of V. carlesii, V. burejaeticum, and V. dilatatum are observed till late growing season. Extrafloral nectaries(EFN) on the terminal veins of five Viburnum species are observed. Pellucid dots on the lower leaf surface of V. dilatatum and V. wrightii might be a good defense strategies against herbivores. We observe many predatory mites eating nectar on large pellucid dots of V. dilatatum. Predatory mites number per leaf proved highly significant differences among tree species, and mean of mites number was highest values 8.1/leaf for V. burejaeticum, and the lowest 2.6/leaf for V. odoratissimum var. awabuki. These results indicate that temperate broadleave trees develop various defense strategies against herbivores for survival. The more studies on the defense strategies against herbivores of tree species might be needed for sustainable forest ecosystem.

• Journal of the East Asian Society of Dietary Life
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• v.13 no.5
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• pp.433-438
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• 2003

To select new useful domestic plants with antimicrobial activities, thirty five samples of berry plant were distributed from Plant Diversity Research Center in Korea Research Institute of Bioscience and Biotechnology. Their extracts with methanol were tested against Escherichia coli, Salmonella typhimurium, Staphylococcus aureus, Listeria monocytogenes by paper disc method. The methanol extracts from Viburnum dilatatum, Viburnum erosum, Aralia continentalis, Camellia japonica, Acer trumcatam, Arasaema takesimense and Rhysocarpus intermedius were effective against S. aureus and the results were as follows: Viburnum erosum 6.5 mm, Viburnum dilatatum and Aralia continentalis 7.0 mm, Rhysocarpus intermedius 8.0 mm, Acer trumcatum 9.0 mm, Camellia japonica and Arisaema takesimense 9.5 mm. And only the methanol extract from Camellia japonica was effective against L. monocytogenes, 7.0 mm. Antimicrobial activities of E. coli and S. typhymurium were not detected. The minimum inhibitory concentration(MIC) of berry of Camellia japonica was examined as 1,250 $\mu\textrm{g}$/mL against S. aureus and as 1,250∼2,500 $\mu\textrm{g}$/mL against L. monocytogenes.

• Animal cells and systems
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• v.2 no.2
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• pp.183-185
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• 1998

A new acari species, ,Amblyseius arcus n. sp., is described from Korea. This species was collected on the deciduous plants, Quercus acutissima, Morus alba, and Viburnum wrightii at Whasim-ri, Soyang-myon, Wanju-gun, Chollabuk-do, Korea.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.16 no.3
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• pp.55-62
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• 2013

Generally, the radioactivity from NPP(Nuclear Power Plants) operation can be released below 3% of DRLs(Derived Release Limits) to environment. It was tried to understand which plant was efficient for absorbing radioactivity in this study. Pinus thunbergii Parl. and Viburnum awabuki K. KOCH were analyzed for radioisotope absorption. The samples were collected at three different locations depending on the distance from NPP at the vicinity 10km away, and 30km away. Gamma radionuclide was not detected from the samples, which means that the direct transition into the plant was not significant. Meanwhile, the very low level of radioactive tritium was detected in the samples. One remark was that every plant has different ability for tritium absorption. These results are expected to be applied to propagation and transplanting in radioactively contaminated area or reducing radioactivity in the soil and water near the plants.

• Korean Journal of Plant Taxonomy
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• v.38 no.4
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• pp.565-571
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• 2008

In the course of execution for Inventories and Management of Plant Resources of Korea, We found new habitats of 4 plant species which distribution ranges are obscure and/or extremely restricted. A subtropical fern distributed in Jeju-do, Woodwardia japonica (L. f.) Sm., was found in Mt. Gambang-san of Hampyeong-gun, Jeollanam-do. A saprophytic orchid, Galeola septentrionalis Reichb., was found in Mt. Ggachi-bong of Boseong-gun, Jeollanam-do. Peristrophe japonica (Thunb.) Bremek., known in Jeollanam-do, was newly found in Mt. Mudeung-san of Gwangju-si. Viburnum furcatum Blume mainly distributed in Jeju-do and Ulleung-do was found in Mt. Jabyeong-san of Gangneung-si, Gangwon-do.

• Journal of Life Science
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• v.29 no.6
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• pp.671-678
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• 2019

Antibacterial and antioxidant activities of plant sources have attracted a wide range of interest across the world over the last decade. This is due to the growing concern for safe and alternative sources of antibacterial and antioxidant agents. In this study, we focused on the antibacterial and antioxidant activities and the chemical composition of a methanol extract from Viburnum sargentii seeds. The chemical composition was determined by gas chromatography-mass spectroscopy (GC-MS), and the antibacterial activity was screened by a disc diffusion assay. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined using the microbroth dilution and spread plate method, respectively. The V. sargentii extract showed growth inhibition activity on all tested Gram-positive (Listeria monocytogenes, Staphylococcus aureus, and Staphylococcus saprophyticus) and Gram-negative (Escherichia coli, Pseudomonas putida, and Proteus vulgaris) pathogenic bacteria. The MIC and MBC ranged from 0.156~1.25 mg/ml for Gram-positive and 0.625~5.0 mg/ml for Gram-negative tested bacteria. The GC-MS results revealed the presence of several phytochemicals such as ${\beta}-sitosterol$ and vitamin E, which are known for their pharmacological applications. The antioxidant activities of V. sargentii extract were investigated by three different methods: the 2,2-diphenyl-1-picrylhydrazyl free radical scavenging assay, the reducing power assay, and the total antioxidant capacity assay. The results showed a concentration-dependent antioxidant potential for all three used methods. In sum, our findings suggest that the methanol extract of V. sargentii seeds has the potential to inhibit the growth of pathogenic bacteria and provide antioxidant compounds, making it therefore worthy of further investigation.

• Journal of Forest and Environmental Science
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• v.14 no.1
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• pp.24-47
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• 1998

This study examined ecophysiological characteristics, cultivation methods and planting uses of tree and shrub species native to Kangwon province and valuable as landscape plants. The results were as followos : 1. 73 species selected as shrubs were ; Rhododendron brachycarpum, Rhododendron micranthum, Abelia mosanensis, Abeliophyllum distichum, Acanthopanax sessiliflorus, Acanthopanax senticosus, Alangium platanifolium var. macrophyllum etc. 2. 38 species selected as trees were ; Cornus controversa, Sorbus commixta, Malus baccata, Prunus padus, Acer triflorum, Acer tegmentosum, Styrax japonica, Styrax obassia, Sorbus alnifolia etc. 3. Shade-tolerant species were ; Abies koreana, Rhododendron brachycarpum, Rhododendron micranthum, Prunus padus, Sorbus commixta, Acer triflorum, Rhus japonica, Cornus kousa, Kalopanax pictus, Chionanthus retusa, Sorbus alnifolia, Magnolia sieboldii, Sorbaria sorbifolia var. stellipila, Berberis koreana, Lindera obtusiloba, Rhododendron schlippenbachii and Euonymus alatus. 4. Species growing well even in less fertile soils were ; Pinus thunbergii, Quercus dentata, Koelreuteria paniculata, Rhus japonica, Quercus acutissima, Albizzia julibrissin, Sorbus alnifolia, Staphylea bumalda, Philadelphus schrenckii, Clerodendron trichotomum, Deutzia coreana, Weigela florida, Zanthoxylum schinifolium and Lindera obtusiloba. 5. Salt-tolerant species were ; Pinus thunbergii, Quercus aliena, Prunus padus, Styrax japonica, Quercus dentata, Kalopanax pictus, Chionanthus retusa, Albizzia julibrissin, Tilia amurensis, Forsythia koreana, Lonicera maackii, Symplocos chinensis for. pilosa, Clerodendron trichotomum, Sambucus williamsii var. coreana, Abelia mosanensis, Deutzia coreana, Viburnum carlesii, Rhus japonica, Rhododendron yedoense var. poukhanense, Zanthoxylum schinifolium, Callicarpa dichotoma, Rhododendron schlippenbachii and Euonymus alatus. 6. Pollutant-tolerant species were ; Styrax japonica, Prunus padus, Quercus dentata, Kalopanax pictus, Chionanthus retusa, Gleditsia japonica var. koraiensis, Styrax obassia, Forsythia koreana, Kpiraea salicifolia, Clerodendron trichotomum, Viburnum sargentii, Viburnum carlesii, Weigela florida and Rhododendron yedoense var. poukhanense.