• Research in Plant Disease
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• v.19 no.3
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• pp.208-215
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• 2013

3-(4-Hydroxyphenyl)-propionic acid (HPP) is a bacterial metabolite synthesized and released by an entomopathogenic bacterium Xenorhabdus nematophila K1. In this study, the control efficacy of HPP was tested against Phytophthora blight and anthracnose of red pepper plants. HPP suppressed mycelial growth of Phytophthora blight and anthracnose pathogens. Under natural sunlight condition, HPP maintained the antifungal activity on the diseases for at least twenty five days. The antifungal activity was not decreased even in the condition of soil-water. It was proved that HPP was able to penetrate the roots and travel upward of the red pepper plants. When HPP suspension was applied to soil rhizosphere before transplanting the red pepper seedlings or was regularly sprayed to the foliage of the plants with ten days interval, it resulted in significant reduction of the disease occurrences (Phytophthora blight and anthracnose) without any phytotoxicity. These results suggested that HPP can be developed to a systemic agrochemical against Phytophthora blight and anthracnose of red pepper plants.

• Korean Journal of Plant Resources
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• v.25 no.6
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• pp.707-718
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• 2012

This study was carried out in order to catalogue the folk plants of 7 counties and cities of northern region of Chungcheongbuk-do from March to October, 2011. Based on the 626 survey sheets collected from 67 residents at 17 places of 7 counties and were subsequently analysed. The identified folk plants in the northern region of Chungcheongbuk-do consisted of a total 348 taxa; 98 families, 250 genera, 298 species, 5 subspecies, 38 varieties, and 7 forms. The use by its usage were: 223 taxa; edible, 123 taxa; medicinal, 4 taxa; dye, 2 taxa; aroma, 6 taxa; spice, 32 taxa; ornamental, 11 taxa; oil, 4 taxa; starch, 22 taxa; and others, respectively, so the edible use is the highest. The most useful part was the leaf, followed by fruit and root. The consistency comparison between the scientific and the local name were the highest in the 50's and the lowest in 80's.

• Korean Journal of Medicinal Crop Science
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• v.21 no.4
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• pp.268-275
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• 2013

This text was analyzed and investigated the distribution of medicinal plants in Cheongoksan Bonghwagun Korea, in order to search the medicinal resources that are used in modern medicine. Medicinal plants of the Korean Pharmacopoeia (10th edition) distributed in Cheongoksan Bonghwagun were consisted of 93 taxa ; 82 species, 10 varieties, 1 forma of 79 genus, 50 families. In medicinal plants of the Korean Pharmacopoeia, rate of native species and exotic species was 89.2% (83 taxa) and 10.8% (10 taxa) respectively. Family classification was the most of compositae of 8 taxa, and life form classification was most of herb of hemicryptophyte species. The classification by using parts were 34 taxa of root use and the classification of efficacy utilization was 24 taxa of Cheongyeolyak (heat-clearing drug) use.

• Korean Journal of Environment and Ecology
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• v.24 no.4
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• pp.406-425
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• 2010

The flora for resource plants in Hapcheon-gun were investigated 10 times from March to October, 2009. Based on collected voucher specimens, the flora of this area consisted of 489 taxa in total; 82 families, 292 genera, 427 species, 4 subspecies, 49 varieties and 9 forms. The resources plants in the area were categorized by usage into 9 groups including an unknown group: 187 edible, 126 pasturing, 137 medicinal, 112 dyeing, 52 ornamental, 16 timber, 9 fiber, 2 industrial taxa and 134 unknown resource plants were recorded respectively. In addition, there were 18 taxa of Korean endemic plants, 33 taxa of specific plants which were designated by the Ministry of Environment, and 2 taxa of rare plants. Furthermore, 44 taxa of naturalized plants were observed in this investigated area. The vegetation status of the investigated area was well conserved, but it is likely that the contaminated area could be rapidly increased and exacerbated by the climbers and development of forest roads. Therefore, the systems for conservation need to be prepared for the effective management of forests, and there must be special rules to control the number of climbers and visitors.

• Advances in Traditional Medicine
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• v.4 no.3
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• pp.187-195
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• 2004

A number of plants from different geographical origins have been shown to possess antioxidant activity. Some of them have been developed as natural antioxidant formulations for food, cosmetic and other applications. Bangladeshi flora is a rich source of a range of plant species, many of which are medicinal plants, and have been used in the preparations of the Unani and Ayurvedic traditional medicines. There are no, or just a few, reports on any systematic screening of the extracts of Bangladeshi plants for free radical scavenging activity using DPPH assay available to date. As part of our on-going search for biological activity in Bangladeshi plants, Kadam (Anthocephalus chinensis), Goran (Ceriaps decandra), Swarnalata (Cuscuta reflexa), Gab (Diospyros peregrina), Sundari (Heritiera fomes), Dhundul (Xylocarpus granatum) and Possur (Xylocarpus mekongensis) have been selected for the assessment of their free radical scavenging activity, and studies on the contents of alkaloids, anthraqunones, flavonoids and tannins in these extracts. Most of these species have been used in traditional medicine in Bangladesh and other countries for the treatment of various illnesses ranging from common cold to cancer. All extracts, except the methanol extract of Cuscuta reflexa, displayed significant free radical scavenging activity in the DPPH assay $(RC_{50}$ values within the range of $2.75\;{\times}\;10^{-2}\;to\;4.7\;{\times}\;10^{-3}\;mg/mL)$. Among these extracts, the methanol extract of Xylocarpus granatum exhibited the most potent activity $(4.7\;{\times}\;10^{-3}\;mg/mL)$ and that of Cuscuta reflexa had the least activity $(1.64\;{\times}\;10^{-1}\;mg/mL)$. While none of these plants showed positive tests with Dragendorff's reagent, presence of low to moderate amounts of phenolic compounds, e.g. anthraquinones, flavonoids and tannins was evident in all of these plants, except for the methanolic extracts of C. reflexa and the barks of D. peregrina, which did not display any evidence for the presence of flavonoids and anthraquinones, respectively.

• The Korea Journal of Herbology
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• v.38 no.3
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• pp.1-10
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• 2023

Objective : Obesity in modern society has a significant impact on pathological, psychological and social problems. Therefore, many studies on obesity treatment using herbal extracts with fewer side effects have been conducted. This study was designed to investigate the effect of inhibiting fat accumulation in vitro in order to Mongolian medicinal plants find anti-obesity candidate among. Methods : We measured pancreatic lipase inhibitory activity in Mongolian medicinal plants extract. Cytotoxicity of these extracts was monitored in 3T3-L1 cells by MTT assay. In addition, the anti-obesity effects was confirmed at concentrations of 0.2, 0.1 and 0.05 mg/㎖ through Oil red O staining. Results : Among Mongolian medicinal plants, Rheum undulatum roots in September (RURS), Paeonia anomala L. (PAL), and Fragaria orientalis (FO) showed the highest pancreatic lipase inhibitory activity. As a result of the MTT assay, more than 80% was judged to be non-toxic, and the concentration was determined, and as a result of evaluating the lipid accumulation inhibitory effect, 6 types were selected as candidates. Conclusion : Based on these results, the top 7 species expected to be used as anti-obesity functional materials were selected. However, additional efficacy verification and mechanism of action need to be established in the future. So, it is expected that the medicinal plants verified through this will be used as functional materials for the prevention and treatment of obesity.

• Environmental Analysis Health and Toxicology
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• v.29
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• pp.14.1-14.8
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• 2014

Objectives Some plants were placed in indoor locations frequented by asthmatics in order to evaluate the quality of indoor air and examine the health benefits to asthmatics. Methods The present study classified the participants into two groups: households of continuation and households of withdrawal by a quasi-experimental design. The households of continuation spent the two observation terms with indoor plants, whereas the households of withdrawal passed the former observation terms with indoor plants and went through the latter observation term without any indoor plants. Results The household of continuation showed a continual decrease in the indoor concentrations of volatile organic compounds (VOCs) during the entire observation period, but the household of withdrawal performed an increase in the indoor concentrations of VOCs, except formaldehyde and toluene during the latter observation term after the decrease during the former observation term. Peak expiratory flow rate (PEFR) increased in the households of continuation with the value of 13.9 L/min in the morning and 20.6 L/min in the evening, but decreased in the households of withdrawal with the value of -24.7 L/min in the morning and -30.2 L/min in the evening in the first experimental season. All of the households exhibited a decrease in the value of PEFR in the second experimental season. Conclusions Limitations to the generalizability of findings regarding the presence of plants indoors can be seen as a more general expression of such a benefit of human-environment relations.

• Journal of Physiology & Pathology in Korean Medicine
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• v.16 no.3
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• pp.458-463
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• 2002

This present study was designed to screen medicinal plants for the treatment of brain diseases such as Parkinson's disease or Alzheimer's disease. The inhibitory activity of monoamine oxidase B (MAO-B) was investigated in the water extracts of 56 species traditional medicines. Among the tested medicinal plants, E. lathyris, R. palmatum, F. rhynchonphylla, E. caryophyllata, E. pekinensis and H. syriacus were showed the strong inhibitory activity against MAO-B. Therefore, MAO-B inhibitory activity of 6 traditional medicine extracts in the different concentration (2.5, 6.5 and 12.5 ㎍/ml) was determined. The inhibitory effect of MAO-B was detected with dose dependently in 6 traditional plants extracts. E. caryophyllata and R. palmatum were showed the highest inhibitory activity, the MAO-B inhibitory activity at 2.5㎍ of herbal extract being 58% and 52%, respectively. The water extracts of 6 species were tested on antioxidant activity using radical scavenging effects against ABTS/sup +/. The water extracts of R. palmatum, E. caryphyllata, E. pekinensis and H. syriacus were showed strong antioxidant capacity at 20 ㎍ concentration. Among the 56 medicinal plants investigated, the water extracts of R. palmatum and E. caryphyllata were showed significant antioxidant capacity and MAO-B inhibiory activity. Therefore, R. palmatum and E. caryphyllata are expected to ameliorate the clinical symptoms in Parkinson's disease due to significant MAO-B inhibition and radical scavenging effect.

• Journal of Physiology & Pathology in Korean Medicine
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• v.21 no.3
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• pp.755-759
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• 2007

In this study, we screened twenty four extracts of eight medicinal plants and three extracts of the commercial product for their antimicrobial and antioxidant properties. Ethanol and ethyl acetate extracts were found active where as aqueous extracts were little or no active. Extracts of Sophora flavescens, Salvia miltlorrhiza and Glycyrrhiza uralensis showed strong activity againsttested organisms and could be the potential antimicrobial agent. The increase of antimicrobial and antioxidant activities of formulations might be due to synergic effect. The results also indicated that the activity of bamboo salt and herbal products can be enhanced by making appropriate formulations.

• Korean Journal of Plant Resources
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• v.2 no.1
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• pp.1-214
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• 1989

There shoul be high possibility of preventive and immune eficacy aqainst cancer when the anti-cancer plants are properly utilized in human dietary life as it is evident that considerable part of wild plantd or both medicinal use and ood are growing naturally in the mountainous area in korea, some of which have ben proved to be anti-cancer plants. this study, at this initial stage, has been done to acquire the fundamentals of 235 kinds of ante-cancer plants growing naturally in korea. from the results o thisresearch, the anti-cancer plants have been sorted out by amily and its number. and also the status of regional distribution of those plants and the kinds of anti-cancer plants used for both medicine and food were studied and experimented to see the medical efficacy against anti-tumor. this experiments were conduced in accodance with the total packed cell volume method and cyto toxicity method.