• Korean Journal of Plant Resources
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• v.35 no.2
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• pp.317-345
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• 2022

This study carried out a survey to utilize basic data for the conservation of northern lineage plants that are vulnerable to climate change, targeting algific talus slope of a specific forest biodiversity region in Yeotan-ri, Jeongseon-eup, Jeongseon-gun, Gangwon-do. The survey was conducted by dividing the wind hole into 625 m² inside and 6,925 m² outside based on the wind hole. The vascular flora were identified as 84 families, 203 genera, 296 species, 6 subs., 27 var., 2 for., and a total of 331 taxa. This was found to be about 7% of 4,724 species of vascular plants in Korea. Plants endemic to the Korean peninsula were identified as 19 taxa, including Syringa fauriei, and 11 taxa for rare plants designated by IUCN. Critically endangered grade (CR) was Paeonia obovata 1 taxa, Endangered grade (EN) was Forsythia saxatilis and Prunus choreiana 2 taxa. A total of 78 taxa were florisitc target species, and 19 taxa were classified for indicator plants in the limestone area. As for alien plants, 20 taxa such as Taraxacum officinale were identified, and the naturalization rate was 6.04% and the urbanization rate was 5.33%. Geographical plants of the study area are 2 taxa of Syringa fauriei and Syringa villosa subsp. wolfii.

• Korean journal of applied entomology
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• v.61 no.2
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• pp.369-376
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• 2022

Five different methanol extracts of plants were evaluated as a mosquito repellent against Aedes albopictus in nude mice model. The volatile components of plants were analyzed with GC-MS. The effective dose was the highest in Nepeta cataria with 72.9, 83.7, 86.4, and 97.3% efficiencies at 10, 50, 100, and 200 ㎍/mL, respectively. Nepeta cataria, Actinidia polygama, and Artemisia annua extracts were the most effective in duration time test. And there was no difference compared to negative control in the low mosquito repellent efficiency from 30 minutes. As a result of analyzing the volatile components of each plant, a total of 28 components in Mentha suaveolens, 19 components in Actinidia polygama, 27 components in Artemisia annua, 26 components in Nepeta cataria, and 19 components in Taraxacum platycarpum were detected. Especially, nepetalactone known as an effective ingredient of a mosquito repellent was identified (27.95 mg/Kg) in one of volatile components of Nepeta cataria. Overall, our results provide the possibility to develop mosquito repellents material using natural plants which contain various volatile components.

• Weed & Turfgrass Science
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• v.6 no.1
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• pp.21-27
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• 2017

This study was investigated in order to occurrence of weed flora in orchard (apple, grape, peach, pear etc.) fields and to the establishment of weed control basic data in these weeds. And this study was survey on 2015. As a result of the study on orchard weeds, there were total of 492 weeds including 63 families. Among all the weeds, 159 species were annual, 97 species were winter annual and 236 were perennial. Each fruit tree patterns of occurrence weeds, 306 species 50 families in apple orchard, 304 species 50 families in pear orchard, 286 species 50 families in grape orchard, and 288 species 48 families in peach orchard. Dominance was the highest with Digitaria ciliaris followed by Artemisia princeps, Stellaria aquatica, Commelina communis, Acalypha australis etc. in order. And exotics weeds occurred 127 species. Trifolium repens was the highest in importance analysis and the followings were in order of Conyza canadensis, Chenopodium album, Taraxacum offcinale, Rumex crispus etc. Changes in weed vegetation in orchard during 30 years, did not very many changed. In 1990, D. ciliaris, Persicaria hydropiper, Portulaca loeracea were dominant. In 2003, D. ciliaris was the most abundant species, followed by A. australis, A. princeps species. And in 2015, also D. ciliaris was the most dominant, followed by A. princeps, S. aquatica.

• Korean Journal of Plant Resources
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• v.21 no.2
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• pp.117-127
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• 2008

The vascular plants in the Eco-Arboretum site, Mt. Gumwon appeared to be 369 taxa; 84 families, 217 genera, 319 species, 43 varieties and 7 forms. Based on the list of the rare plants, 2 taxa existed in the studied areas; Abies koreana (Preservation priority order; No. 73), Paeonia obovata (No. 97) and based on the list of Korean endemic plants, 12 families, 14 genera, 11 species, 3 varieties, 1 hybrid, 15 taxa existed; Cephalotaxus koreana, Abies koreana (Planted species), Carex okamotoi, Salix hallaisanensis, Salix purpurea var. japonica, Clematis trichotoma, Thalictrum actaefolium, Lespedeza ${\times}$ tomentella, Vicia nipponica, Stewartia koreana, Hypericum attenuatum var. confertissimum, Paulownia coreana (Planted species), Weigela subsessilis, Aster koraiensis (Planted species). Specific plant species by floral region were total 38 taxa; Paeonia obovata in class V , 13 taxa (Lilium leichtlinii var. tigrinum, Betula costata, Betula davurica, Ulmus davidiana, Spiraea frutschiana, Prunus maackii, Syringa reticulata var. mandshurica, Cynanchum inamoenum, Lonicera subhispida, Cacalia firma, etc.) in class III , 5 taxa (Heloniopsis orientalis, Chrysosplenium pilosum, Acer triflorm, Viola tokubuchiana var. takedana, Teucrium veronicoides, etc.) in Class II . 19 taxa (Dryopteris erythrosora, Arisaema ringens, Veratrum versicolor, Polygonatum inflatum, Salix glandulosa, Betula schmidtii, Alnus hirsuta, Quercus variabilis, Aconitum japuense, Dicentra spectabilis, Chrysosplenium flagelliferum, Impatiens noli-tangere, Ilex macropoda, Tilia amurensis, Fraxinus mandshurica, Trigonotis icumae, etc.)in class I . The naturalized plants in this site were 5 families, 13 genera, 15 taxa (Rumex acetocella, Rumex obtusifolius, Trifolium repens, Oenothera odorata, Erigeron annuus, Erigeron philadelphicus, Bidens frondosa, Taraxacum officinale, etc.) and naturalization rate was 4.1% of all 369 taxa vascular plants.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.10
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• pp.1458-1469
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• 2015

This study was carried out to investigate the nitrite scavenging activities (NSA) of nine kinds of wild vegetables in a $NaNO_2$ model system and nitrite of Chinese cabbage as well as the inhibitory effect of kimchi containing a mixture of wild vegetables (MWV) with nitrite scavenging activity on brain neuronal cell death. NSA was higher at pH 1.2 than pH 4.2 in all samples. NSA of extracts from sprouts of Oenothera laciniata and Aster scaber (AS) was above 90% at pH 1.2. AS, Codonopsis lanceolate (CL), Adenophora triphylla (AT), Platycodon grandiflorum (PG), and Taraxacum officinale (TO) extracts showed significantly higher levels of NSA than those from other extracts at pH 4.2. CL, AT, PG, and TO extracts showed high NSA on nitrite of Chinese cabbage. In addition, the effects of MWV on antioxidant and brain neuronal cell death induced by oxidative stress were investigated in human brain neuroblastoma SK-N-SH cells. MWV extract attenuated $H_2O_2$-induced cell death and reactive oxygen species (ROS) generation in SK-N-SH cells. MWV extract showed significantly higher DPPH radical scavenger activity when compared to normal kimchi extract. MWV extract showed an inhibitory effect on brain neuronal cell death against oxidative stress by antioxidant activities.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.5
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• pp.592-599
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• 2017

This study examined the nutritional compositions of seven raw and blanched green vegetables: Amaranthus mangostanus L. (AM), Aster scaber Thunberg, Taraxacum platycarpum H. Dahlstedt (TP), Oenanthe javanica (Blume) DC, Allium tuberosum Rottler, Ligularia fischeri (Ledeb.) Turcz (LF), and Euonymus alatus (Thunb.) Siebold (EA). Proximate compositions (moisture, protein, ash, dietary fiber, and fat), minerals (calcium, phosphorus, iron, potassium, sodium, and magnesium), and vitamins (riboflavin and vitamin C) were analyzed in the study. In this study, moisture contents of raw and blanched green vegetables were 71.28~92.68 g/100 g and 76.90~92.09 g/100 g, respectively. The protein and fat contents of raw LF (33.38 g/100 g and 4.50 g/100 g dry weight basis, respectively) were higher than those of other cultivars. Ash contents of AM were significantly higher than those of their respective raw samples. Potassium, magnesium, calcium, and sodium contents of AM were 7,710.63 mg/100 g, 1,786.67 mg/100 g, 1,534.44 mg/100 g, and 743.18 mg/100 g, respectively. In the case of raw green vegetables, iron content of TP was 55.23 mg/100 g, which was the highest value among tested green vegetables. Total dietary fiber content of EA was 59.75 g/100 g, which was the highest value. Riboflavin content was highest in the raw and blanched LF (3.10 mg/100 g and 3.05 mg/100 g, respectively). Vitamin C contents of raw and blanched EA were 468.28 mg/100 g and 471.42 mg/100 g, respectively, which were higher than the other values. There were differences in nutritional ingredients according to different types of green vegetables. Therefore, it is advisable to evenly ingest various green vegetables.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.6
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• pp.674-682
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• 2009

This study was designed to examine the effects of Compositae plants on plasma glucose and lipid levels in streptozotocin (STZ) induced diabetic rats. Sprague-Dawley rats were randomly assigned to 5 groups: normal, STZ-control and three experimental groups [Artemisia iwayomogi (A. iwayomogi), Atractylodes lancea (A. lancea), and Taraxacum mongolicum (T. mongolicum)]. Normal and STZ-control group were fed an AIN-93 diet and three experimental groups were each fed a modified diet containing 10% compositae powder for 4 weeks. The plasma glucose levels at 4 weeks of A. iwayomogi, A. lancea, and T. mongolicum groups were significantly lower than STZ-control group. The A. iwayomogi and A. lancea groups had significantly suppressed hypertrophy of liver and kidney. The hematocrit levels of A. lancea and T. mongolicum group were significantly lower than STZ-control groups. The total cholesterol and triglyceride levels and atherogenic index (AI) of A. lancea group were significantly lower than STZ-control group. Intake of Compositae plants may be effective in antihyperglycemia by lowering blood glucose levels. The A. iwayomogi, A. lancea, and T. mongolicum can be beneficial for the diabetic complications and damage from the lipid peroxidation.

• Journal of Life Science
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• v.31 no.6
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• pp.543-549
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• 2021

Approximately 10% of all angiosperms belong to the Asteraceae family. Plant species belonging to this family have traditionally been used as medicinal plants in the Korean Peninsula. We investigated the antioxidant activity of seed extracts from 14 species belonging to the Asteraceae family. Seeds with ≥ 90% percentage of filled seed and ≥ 50% final germination were used. The total phenolic content was the highest in Dendranthema zawadskii var. tenuisectum (13.5 mg of gallic acid equivalents (GAEs)/g seeds), followed by Dendranthema zawadskii var. latilobum (11.8 mg of GAEs/g seeds), and Callistephus chinensis (11.0 mg of GAEs/g seeds). The total flavonoid content was highest in C. chinensis (9.8 mg of quercetin equivalents (QEs)/g seeds), followed by D. zawadskii var. tenuisectum (7.2 mg of QEs/g seeds) and Taraxacum officinale (6.3 mg of QEs/g seeds). Our results showed that 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) scavenging activity was highest in D. zawadskii var. tenuisectum (57.4 ㎍/ml), followed by T. officinale (59.1 ㎍/ml) and D. zawadskii var. latilobum (65.0 ㎍/ml), with a half maximal inhibitory concentration (IC₅₀) of DPPH scavenging activity. Furthermore, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity was highest in C. chinensis (26.2 ㎍/ml), followed by D. zawadskii var. tenuisectum (38.4 ㎍/ml), T. officinale (40.2 ㎍/ml), with a half maximal inhibitory concentration (IC₅₀) of ABTS scavenging activity. Based on a cluster analysis according to the antioxidant activity, the 14 species were classified into five groups, with group 4 having the highest antioxidant activity and group 0 having the lowest antioxidant activity. D. zawadskii var. latilobum, D. zawadskii var. tenuisectum, T. officinale, and C. chinensis belonging to groups 3 and 4, exhibited high phenolic content and antioxidant activity and can be considered potent plant-derived natural antioxidants.