• Korean Journal of Plant Resources
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• v.18 no.2
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• pp.223-239
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• 2005

The vascular plants collected from Dongwol Valley in Mt. Gyeryongsan, national park were composed of all 248 taxa including cultivated species, and classified into 1 phylum, 4 classes, 3 subclasses, 34 orders, 84 families, 178 species, 33 varieties and 4 forms. As compared the flora of the commonly distributing species of this region with those of the southern part, the middle part, the northern part of the Korean Peninsula, Jeju-do Island and Ulreung-do Island, the proportion of them were $90.3\%,\;98.0\%,\;79.0\%,\;73.8\%$ and $62.1\%$, respectively. One taxon of the plants distributed only in the southern part, 3 taxa of those in the middle part, 5 taxa of those in the middle-northern part and 23 taxa of those in the middle-southern part were found in this Valley. Natural resource plants were categorized into edible 118 taxa, medicinal 78 taxa, industrial 46 taxa, ornamental 39 taxa, timber 14 taxa and fiber 9 taxa. Four taxa of the Korean endemic plants are distributed in Dongwol Valley. The vegetation of the valley is Quercus and Rhododendron mixed forest, and it belongs to the boundary between the middle part and the southern part in the floral zone of the Korean Peninsula.

• Korean Journal of Food Science and Technology
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• v.31 no.3
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• pp.855-863
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• 1999

To develop new natural antioxidants, antioxidative activity of ethanol (75%) extracts from 50 edible or medicinal plants were examined on lard and palm oil by Rancimat method ($120^{\circ}C$, 20 L/hr). The extracts from Rhus verviciflua STOKES showed comparatively strong antioxidative activity on test. Of the solvents used for extraction, chloroform extract exhibited the strongest antioxidant activity. AI (antioxidant index: induction period of oil containing extract/induction period of control oil) of chloroform extract was higher than that of commercial antioxidant, such as BHT, BHA and ${\delta}-tocopherol$. Free phenolic acid fraction (200 ppm) of the chloroform extract from 75% EtOH extract of Rhus verniciflua STOKES (RCF) showed stronger activity than that of BHT, BHA, and ${\delta}-tocopherol$ at the same concentration. RCF-11 and RCF-13 fractions separated by silicagel column chromatography from the RCF showed stronger activity than other fractions by the Rancimat method.

• Korean Journal of Plant Resources
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• v.33 no.2
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• pp.138-152
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• 2020

We investigated the Riparian floras in Hwangjicheon stream from April 2017 to October 2019. 223 taxa (i.e. 203 species, 2 subspecies,18 varieties from 158 genera of 65 families) of the vasclur plants were found in Hwangjicheon stream. Among 223 taxa, we found 4 endemic species, and However, rare and endangered plants were not found in Hwangjicheon stream. The number of floristic regional indicator plants was 22 (i.e. 3 species of IV degree, 4 taxa of III degree, 7 taxa of II degree, and 8 taxa of I degree). In addition, 28 naturalized plants were identified, and the percentage of Naturalized Index (NI) and Urbanization Index (UI) were 12.5%, and 8.7%, respectively. Vascular plant usability and reclassification result is Edible 166 species (74.4%), Medicinal 187 species (83.8%), Flavor 9 species (4.0%), Industrial 99 species (44.3%), Ornamental 106 species (47.5%), Restoration 84 species (37.6%), Compost 112 species (50.2%), Unknown 5 species (2.2%). We hope that our results provide reference data to set up strategy of conservation of biodiversity in the Hwangjicheon stream and Taebaek-si areas.

• Korean Journal of Plant Taxonomy
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• v.46 no.4
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• pp.371-377
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• 2016

The succulent herbaceous perennial Sedum sarmentosum commonly grows in the southern part of the Korean Peninsula. It is a species native to China, most likely introduced into Korea due to its edible and medicinal uses. If plants were introduced from a single source, we would expect no or low levels of genetic variation in Korean populations. Alternatively, if plants were introduced from multiple sources, we would expect, in contrast, high levels of genetic diversity. To test which is more likely, we surveyed the degree of allozyme variation in ten populations of this species from southern Korea. We found that S. sarmentosum was monomorphic at all fifteen allozyme loci. However, two congeners (S. polytrichoides and S. kamtschaticum) and two related species (Hylotelephium ussuriense and H. verticillatum) maintain moderate to high levels of genetic diversity ($H_e=0.144$, 0.203, 0.201, and 0.204, respectively). We suggest that southern Korean populations of S. sarmentosum likely descended from a single introduction of a few plants and then became naturalized exclusively via vegetative spreading (as plants in Korea, but also as occurs in other parts of its native and naturalized range, are sterile).

• Proceedings of the Plant Resources Society of Korea Conference
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• 2021.04a
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• pp.37-37
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• 2021

Calystegia soldanella L. is a perennial herbaceous halophyte belonging to the convolvulaceae family, which mainly grows in coastal sand dunes in Korea. Shoots and rhizomes are edible, and roots called 'Hyoseon Chogeun' are known to have medicinal effects such as antipyretic, sterilization, and diuretic. In addition, physiological activities of antioxidant, anti-inflammatory, antiviral, antifungal and PTP-1B (protein tyrosine phosphate-1B) inhibition have been reported. In this study, in vitro induction cell lines of C. soldanella L. collected from the coastal sand dunes in Jeju island was redifferentiated into adventitious roots that can be used as medicinal resources. Also the biomass of mass-proliferated adventitious roots using a bioreactor were evaluated. Plants of C. soldanella L. were collected from the crevice of the seashore in the coastal area of Taeheung 2-ri, Namwon-eup, Seogwipo-si. Then, it was separated into leaves, stems, rhizomes, and roots, and surface sterilized with 70% ethyl alcohol and 2% NaOCl (sodium hypochlorite). After washing with sterilized water, each organ section was cultured in Hormone-free MS medium (Murashige & Skoog Medium). As a result, the induction response rates were evaluated at 85% and 55%, respectively, in terms of callus formation and shoot generation in the rhizome segment. In the case of the adventitious roots morphological characteristics induced by single-use treatment of auxin-based plant growth regulators IBA and NAA from redifferentiated shoots were compared. Most efficient adventitious root culture method as a rooting rate, number, length, and biomass proliferation in the bioreactor system was confirmed when treated by culturing in MS salts, Sucrose 30 g·L^-1, and IBA 1mg·L^-1 for 4 weeks. In this study, the medium composition and culture period were confirmed using a bioreactor system to mass-proliferate adventitious roots derived from C. soldanella L. in Jeju island. Also this adventitious root line developed a new medicinal material could increase value of the bio-industry ingredient through quantitative and qualitative screening of phyto-bioactive compounds.

• Korean Journal of Plant Resources
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• v.10 no.1
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• pp.64-85
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• 1997

This study was to establish the floristic composition and vegetation of resources vascular plants of Mt. Mandukbong(1,035.3 m; $128^{\circ}$54'24'E, $37^{\circ}$36'53'N). This work were investigated during the period of 1996. Resources vascular plants were composed of 97 families, 298 genera, 406 species, 70 varieties and 8 formae, Totaling 484 taxa. Among the investigated resources plants. 15 taxa(2.6%) were Korean endemic species. The forest were comparatively well conservated by Pteridophyta calculation(Pte-Q), 1.1 Useful of resources plants were Edible source(46.7%), Pasture source(37.2%), Medicinal source(35.5%), Ornamental source(12.1%)and Timber source(5.9%) respectively. The forest vegetion was classified into 1 order, 1 alliances, 1 suballiances and 4 communities; Rhododendro - Quercetalia mongolicae Kim 1990 Lindero - Quercion mongolicae Kim 1990 A. Typical community B. Quercus variablilis - Quercus mongolica Community Callicarpo - Quercenion serratae Kim 1990 C. Carex humilis v. nana - Pinus densiflora Community D. Juglans mandshurica - Urtica angustifloia community

• Korean Journal of Plant Resources
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• v.37 no.4
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• pp.360-385
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• 2024

This study was carried out to clarify the distribution of vascular plants in Biryongsan Mt. (1,129 m) and Baebawhisan Mt. (967 m) (a.s.l., 36° 55'~37° 06' N, 129° 03'~29° 09' E), Gyeongsangbuk-do. The surveys were conducted 13 times from April 2019 to August 2022. The vascular plants of Biryongsan Mt. and Baebawhisan Mt. was consisted a total of 570 taxa based on the voucher specimens; 108 families, 334 genera, 506 species, 17 subspecies, 44 varieties, 3 forms. Among them, the Korean endemic plants were 12 taxa. The of number of threatened and near threatened plants, as National Red List of Vascular Plants in Korea designated by the Korean National Arboretum, were 8 taxa, comprising 1 endangered (EN), 3 vulnerable (VU), and 4 near threatened (LC) species. The number of floristic target plants designated by the Ministry of Environment was 104 taxa, including 10 of level IV and 28 of level III. The naturalized plants in this area were 42 taxa. Among 570 taxa, there were 403 edible plants, 461 medicinal plants, 221 industrial plants, 306 ornamental plants, and 17 taxa with unknown usefulness respectively.

• Korean Journal of Plant Resources
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• v.19 no.1
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• pp.180-188
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• 2006

This study was carried out to offer the raw data on the method of cultivation and ecological characteristic by systematical analysing habitat environment of Tulipa edulis that was expected as medicinal and ornamental resource. The habitat environment was that the altitude was 245 m, the aspect of south, the size of approximately $49\;m^2$, and there was analyzed that Tulipa edulis grew wild in the dryly sunny spot. The vascular plants were summarized as 62 taxa; 28 families, 59 genera, 50 species, 11 varieties and 1 forms, and the resource plants were classified that there were 23 taxa of ornamental plants(37.1%), 43 taxa of edible plants(69.4%), 34 taxa of medicinal plants(54.8%) and 29 taxa of others(46.8%). In the results of soil factors analysis, there showed that acidity was pH 4.9, organic matter content of 4.9%, available $P_{2}O_{5}$ of 3.6 mg/kg, exchangeable $K^+$ of $0.5\;cmol^{+}/kg$, exchangeable $Ca^{2+}$ of $3.0\;cmol^{+}/kg$, exchangeable $Mg^{2+}$ of $0.8\;cmol^{+}/kg$, cation exchange capacity(C.E.C) of $12.3\;cmol^{+}/kg$ and electrical conductivity(EC) of 0.3 dS/m. In the results of correlation analysis between soil factors, exchangeable $Ca^{2+}$ and C.E.C were highly correlative. The growth characteristics of Tulipa edulis were surveyed that height was 7.6 cm, leaf width of 0.6 cm, leaf length of 12.7 cm, flower width of 2.8 cm, peduncle of 5.4 cm and chlorophyll of $34.7\;{\mu}g\;mg^{-1}$. In the results of correlation analysis between growth characteristics, height and peduncle were highly correlative. In the results of correlation analysis between soil factors and growth characteristics, exchangeable $K^{+}$ and leaf length were high relativity but they were confirmed negative relation. In the results of growth model analysis, R-square of leaf width and exchangeable $K^{+}$ was some 86.4% and that of chlorophyll and exchangeable $K^{+}$ was some 83.7%.

• Korean Journal of Food Science and Technology
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• v.27 no.6
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• pp.891-896
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• 1995

In order to screen natural inhibitor of tyrosinase which catalyzes an enzymatic browning of some foods and in vivo synthesis of melanin, inhibitory effect of 129 edible plants and 15 chemical compounds on the in vivo melanin synthesis by mushroom tyrosinase was analyzed. Among leafy vegetables tested, radish bud, red chicory, Shepherd's purse and small green onion were found to have more than 50% tyrosinase inhibition effect in the descending order. Chinese radish and garlic in root vegetables, and nameko, shiitake and oyster mushroom in mushrooms, and teas showed also more than 50% inhibition effect. Among fruit vegetables tested, red pepper, Chinese quince and avocado were found to have more than 50% tyrosinase inhibition effect, while fruits generally showed low inhibitory effect. Medicinal plants which inhibit tyrosinase more than 50% were mume fructus>cinamomi ramulus>rubi fructus>mori cortex>biotae orientalis folium>puerariae radix, and herbs with more than 50% inhibitory effect were allspice>clove>mustard. In some chemical compounds tested, 4-hexylresorcinol, L-cysteine, glutathione, sodium bisulfite and kojic acid showed powerful inhibition effect on mushroom tyrosinase.

• Korean Journal of Plant Resources
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• v.25 no.6
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• pp.731-738
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• 2012

Dandelion has been widely utilized for medicinal and edible purposes. This research was conducted to evaluate the effect of supplemental LED (light-emitting diode) light on germination, growth characteristics and anthocyanin content of dandelion (Taraxacum officinale) seedling using LED blue (460 nm), red (660 nm, R), blue + red (B:R=6:4) and fluorescent lamp light treatment. By LED illumination to T. officinale seed germination speed was delayed, and germination rate was the highest in the fluorescent light. The growth characteristics (plant height, number of leaves, root length and fresh weight) were greatly influenced by supplemental LED light compared with control treatment, and the growth promotion was the most effective in the red LED illumination. After 60 days of red and mixed LED light treatments, anthocyanin content of dandelion plants was significantly changed. The anthocyanin content was increased by 12~19 mg/100 g under the red LED and the mixed light conditions compared with the control and the blue LED. Results indicate that illumination with red and mix LEDs, compared with other light treatments, is beneficial for promotion of growth and anthocyanin content in dandelion.