• Journal of the East Asian Society of Dietary Life
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• v.25 no.5
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• pp.880-886
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• 2015

The objective of this study was to determine the proximate composition and antioxidant activities of Dioscorea spp. Samples were divided into Dunggeunma (D. bulbifra L), Danma (D. polystachya Turcz), Jangma (D. batatas Decaisne) and Danpungma (D. quinqueloba Thunb). The samples were extracted with 70% ethanol and analyzed for total flavonoid contents, polyphenol contents, DPPH radical scavenging activity, and ABTS radical scavenging activity. The moisture contents ranged from 11.96% to 15.01%. The crude protein contents were in the range of 7.86% to 11.55% (Dunggeunma 11.55%, Danpungma 10.48%, Danma 9.43%, Jangma 7.86%). The crude fat contents were between 0.37% and 0.43% (Danpungma 0.43%, Jangma 0.37%, Dunggeunma 0.37%, Danma 0.37%). In the antioxidant activities assay, total polyphenol content of Danma was significantly higher than those of other species at 115.47 mg/100 g gallic acid equivalent (GAE) (p<0.05), whereas it was significantly lowest in Jangma at 66.31 mg/100 g gallic acid equivalent (GAE) (p<0.05). ABTS and DPPH radical scavenging activities of Danma were significantly highest at 104.43 and 56.72 mg trolox eq/100 g (p<0.05). Therefore, antioxidant activities of Dioscorea spp. provide a possible scientific basis for assessing the performance of functional material of Dioscorea spp.

• Journal of the Korean Society of Radiology
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• v.16 no.6
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• pp.779-786
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• 2022

This study is designed to examine the effects of Dioscorea Quinqueloba extract as a natural radiation protection agent on the prostate and heart of male rats. Dioscorea Quinqueloba extract is well known to prevent the male-specific disease and heart disease. In this study, the Gamma-ray 10 Gy was irradiated in whole body of male rat to identify radioprotective effect by Dioscorea Quinqueloba extract. After irradiation, tissue change, SOD (Superoxide Dismutase) activity changes and hematological changes were observed. DQ+IR group showed higher lymphocyte, white blood cell, platelet levels than the IR group. In the NC and DQ groups, the number of prostate gland cells and the gap between cells were relatively narrow. But in the IR group, the cells died significantly and the gap widened. In the DQ+IR group, the gap between cells increased similarly to the IR group, but the number of dead cells was noticeably smaller. In the NC and DQ groups, the cardiovascular and myocardium are clearly separated, and cell nuclei are in good condition. But in the IR group, the cardiovascular and myocardium boundaries were disrupted, and the number of dead cell nuclei was high. In the DQ+IR group, although the boundaries were widened, but not disrupted and the number of dead cell nuclei was high. Therefore, Dioscorea Quinqueloba extract is judged to have radioprotective properties for the prostate and cardiovascular.

• Korean Journal of Plant Taxonomy
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• v.45 no.4
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• pp.380-390
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• 2015

The morphological characters were observed in six taxa in the genus Dioscorea of Korea (D. polystachya, D. japonica, D. nipponica, D. quinqueloba, D. tenuipes, and D. dokoro). The underground structure and the formation of bulbil were useful characters for separating sect. Enanatiophyllum from sect. Stenophora. The important characters for discriminating taxonomic entities were as follows: the position of the anther and the shape of the pistil in the microstructural characters, including the protuberance of the base of the petiole, the shape and color of the flower, the shape of the fruit, and the shape of the seed wing. Based on the results, a key to Korean Dioscorea is provided and the distribution of these species in Korea is described.

• Korean Journal of Pharmacognosy
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• v.24 no.3
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• pp.187-191
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• 1993

Three compounds were isolated from the rhizomes of Dioscorea quinqueloba and identified as $diosgenin\;3-O-{\alpha}_-L-rhamnopyranosyl(1{\rightarrow}2)-{\beta}-_D-glucopyranoside$, dioscin and gracillin by chemical and spectroscopic means.

• The Korean Journal of Mycology
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• v.27 no.3 s.90
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• pp.211-219
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• 1999

This paper is the ninth contribution towards taxonomic studies on Cercospora and allied genera, and contains ten species of Korean cercosporoid fungi; viz., Cercospora citrullina, C. gomphrenae, C. mirabilis, C. plantaginis, C. tabacina, Mycovellosiella ariae, Pseudocercospora contraria, P. lythracearum, P. rubi var. subhyalina, and Ramularia wisconsina. Morphological characteristics of taxonomic value are described and illustrated for these species to contribute towards a mycological monograph of Korean cercosporoid fungi.

• The Korean Journal of Food And Nutrition
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• v.31 no.2
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• pp.252-257
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• 2018

It is noted that Dioscorea quinqueloba is a medicinal herb that is widely used to treat cardiovascular disease and is assessed as useful to treat other various medical conditions. The immunopotentiating effects of the protein extract (DQP-1) from Dioscorea quinqueloba were thus formally investigated in vivo under incident of cold stress. In this case study, the spleen and thymus weight in mice was shown to have decreased after a measured exposure to cold stress, while the adrenal gland weight in the mice was shown to have increased. The systematic oral administration of DQP-1 significantly recovered the weight loss of the spleen and suppressed the adrenal gland hypertrophy during the association with cold stress. Additionally, the DQP-1 also restored the ascorbic acid level in the adrenal gland reduced after cold stress. The cold stress exposure lowered the percentage of $CD4^+$ and $CD8^+$ cells in the mouse thymus as determined by the flow cytometric analysis, as well as the levels of some serum immunological cytokines(interleukin-2, interleukin-12, and interferon-${\gamma}$) in the studied mice. The resulting identified weakened immunity caused by cold stress was also recovered by a treatment with DQP-1. The DQP-1 significantly suppressed the formation of serum enzymes of alanine aminotransferase, aspartate aminotransferase, and lactate dehydrogenase, which were systematically elevated during the cold stress episode. These results indicate that DQP-1 can improve immunity in mice that are characteristically weakened under stress.

• Korean Journal of Environment and Ecology
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• v.23 no.1
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• pp.22-29
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• 2009

To investigate the vegetation structure of mountain valley from Cheonwangbong to Seonneotang, 23 plots($400m^2$) set up with random sampling method were surveyed. Two groups of Abies koreana community, Fraxinus mandshurica-Acer pseudo-sieboldianum community were classified by cluster analysis. Abies koreana was a major woody plant species in the valley area from Cheonwangbong to Mapogpo, and Pinus koraiensis, Acer pseudo-sieboldianum and Sorbus amurensis was partly occupied. High positive correlations was proved between Picea jezoensis and Sorb us amurensis, Taxus cuspidata, Fraxinus sieboldiana, Kalopanax pictus; Betula costata and Betula platyphylla var. japonica, Corn us controversa; Abies koreana and Pinus koraiensis; Stephanandra incisa and Betula ermani, Acer tegmentosum, Prunus sargentii; Acer pseudo-sieboldianum and Betula ermani; Fraxinus mandshurica and Deutzia prunifolia, Acer tschonoskii var. rubripes; Sorbus amurensis and Kalopanax pictus; Betula platyphylla var.japonica and Cornus controversa; Lindera erythrocarpa and Lespedeza maximowiczii, Quercus serrata, Styrax obassia; Lindera obtusi/oba and Abies holophylla; Carpinus laxiflora and Lespedeza maximowiczii; Fraxinus sieboldiana and Acer tschonoskii var. rubripes, Pinus koraiensis, Taxus cuspidata; Acer tschonoskii var. rubripes and Taxus cuspidata; Quercus mongolia and Rhododendron schlippenbachii; Quercus serrata and Styrax obassia, and relatively high negative correlations was proved between Abies koreana and Deutzia prunifolia; Lindera obtusi/oba and Pinus koraiensis. Species diversity(H') of investigated groups was ranged $2.7478{\sim}2.9573$.

• Journal of the Korean Institute of Landscape Architecture
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• v.42 no.2
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• pp.33-40
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• 2014

The purpose of this study is to examine vegetation of the outer walls of the Jeongyi Town Wall in Jeju and analyze the characteristics and problems identified, for suggesting preliminary data for selecting species of plants appropriate for the greening of the walls in the southern temperate climate region, including Jeju. The result of this study is as follows. The number of plants growing naturally around the walls of the town was identified to be 52 taxa. Based on the list of naturalized plants, there are 5 taxa; Sonchus oleraceus, Houttuynia cordata, Crassocephalum crepidioides, Erigeron annuus and Lamium purpureum. The number of species by district was from 3 to 14 taxa with 7.1 taxa on average. Analyzing by the constancy class, plants in class III included Sedum bulbiferum, Trichosanthes kirilowii, Hedera rhombea and Boehmeria nivea. Manipulation of the species composition table shows that the number of plant species growing naturally around the walls of Jeongyi Town Wall is a total of 52 taxa, including 11 taxa by differential species of community and 41 taxa by companion species. The types of plants very useful for the covering of the walls are evergreen climbing vine, such as Hedera rhombea, Ficus thunbergii and Euonymus fortunei and deciduous climbing vine, such as Parthenocissus tricuspidata, Trichosanthes kirilowii and Paederia scandens. In addition, Ficus stipulata is identified as a vegetation more appropriate for the southern-ward lattice-blocked walls. Woody plants, such as Akebia quinata, Celastrus flagellaris, Ampelopsis brevipedunculata for. citrulloides, Rubus hirsutus, Clematis apiifolia and herbaceous plants, such as Dioscorea tenuipes, D. quinqueloba, D. nipponica, Cayatia japonica and Paederia scandens var. angustifolia are highly useful materials for climbing plants for covering the walls of the southern province. Pteridophyte, such as Lemmaphyllum microphyllum, Pteris multifida, Cyrtomium falcatum and Lygodium japonicumare suggested as very useful for increasing unique regional characteristics of the southern province, including Jeju.

• Journal of Life Science
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• v.26 no.11
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• pp.1225-1231
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• 2016

In this study, our investigated the antioxidant activities and compared other bioassay including anti-microbial, antifungal activities and total polyphenol contents of functional healthy drinks from some medicinal herbs and coffee mixture. The kind of medicinal herbs, chaga mushroom (Inonatus obliqurs), moringa (Moringa Oleifera), gravila (Anona muricata), mulberry (Morus alba), Dioscoreaceae (Dioscorea quinquelaba), Berberidaceae (Epimedii Herba), Asteraceae (Artemisia capillaries) and siberian ginseng (Acanthopanax senticous,). The functional healthy drinks, named C1, C2, C3, C4, C5, C6 and C7 were summered in Table 1. The in vitro antimicrobial activity was examined against Gram positive bacteria, Gram negative bacteria and a fungus. The functional healthy drinks were broad spectrum of anti-microbial activity without antifungal activity against Candida albicans KCTC7965. In particularly, the C7 showed strong activity against Methicillin Resistant Staphylococcus aureus CCARM3089, CCARM 3115 and CCARM3561. And, the C7 showed 88% of free radical scavenging effect on 0.5 mg/ml using 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. Functional healthy drink C7 was mulberry extracts from Morus alba, chaga mushroom from Inonatus obliqurs and moringa from Moringa olifera in additionally coffee extracts. Its results confirm that the potential use of mulberry extracts as a good source of antibacterial compounds or as a health promoting food and health drinks.

• Korean Journal of Plant Resources
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• v.12 no.2
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• pp.125-132
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• 1999

This study has investigated the growing features and vegetation of Acanthopanax chiisanensis and Acanthopanax koreanum in Mt. Jiri and Halla from Sep. 1997 to Aug. 1998. As to Acanthopanax chiisanensis, it occupied surrounding areas of Nogodan in Mt. Jiri of the height of 1,507m, ImgeolyoungJae of 1,300m and the Mt. Halla. of 1,100m of There were rather high constancy degree with Quercus mongolica, Schizandra chinensis, Hydrangen serrate for. acuminata, Acer pseudo-sieboldianum, Dryopteris crassirhizoma, Actaea asiatica, Thalictrum filamentosum, Abies koreana, Arundinella hirta from the sorts. The common species in Mt. Jiri and Halla are Acer pseudo-sieboldianum, Dryopteris crassirhizoma, Callicarpa japonica, Parthenocissus tricuspidata, Acer mono, Ligularia fischeri, Disporum smilacinum, Viola acuminata Aconitum kusnezofii. On the other hand, concerning of Acanthopanax koreanum community, it possessed the small areas of wedo weoltae village in Chejudo. In this area, a liana e.g. Dioscorea tenuipes, Hedera rhombea, Lygodium japonicum, Akebia quinata, Vitis thunbergii, Dunbaria villosa, Trachelospermum asiaticum var. intermedium, Vitis amurensis, Paederia scandens, lives with Pinux thunbergii, Celtis aurantiaca, Mallotus japonicus and so forth in tree layer and subtree layer. There is artificial change no move in the researching sites, Acanthopanax chiixanensis will be transformed into Abies koreana - Acanthopanax chiisanensis community. Soil characteristics showed the high value such as pH 6.56 and conductivity 0.258mmho/cm in Acanthopanax koreanum community of Mt. Jiri, they also indicated digit as follows: the content of organic matter and total nitrogen are from 25.16 through 25.35% and 7.58 through 9.30mg/g respectably. The soil characteristics at Acanthopanax chiisanensis community in Mt. Jiri and Halla, was high as like pH 5.76, conductivity 0.238mmho/cm, total nitrogen 9.30mg/g, total phosphorus 0.126mg/g in Mt. Halla.