• Journal of the Korean Society of Tobacco Science
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• v.26 no.1
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• pp.7-12
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• 2004

Effect of Decyl Alcohol Emulsifiable Concentrate on sucker control and phytotoxicity to tobacco plants were tested on flue-cured tobacco and burley tobacco. There were no significant differences of sucker inhibition effect between Decyl Alcohol EC and Choline Salt of Maleic Hydrazide Soluble Concentrate(control chemical). Tobacco plants applied with Decyl Alcohol EC showed no visible symptoms of phytotoxicity and no significant differences of number of leaves, leaf length, leaf width, and stalkt height. Yields increased considerably with no difference from ones of plants treated with control chemical.

• Korean Journal of Pharmacognosy
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• v.35 no.3 s.138
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• pp.184-188
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• 2004

This study was carried out to evaluate glutathione S-transferase (GST) activity and hyaluronidase inhibitory effect of medicinal plants. The EtOH extracts of 20 species plants were tested. As the result, Acorus gramineus and Pueraria lobata exhibited GST activity. On the continuous experiment, the n-BuOH fraction of Acorus gramineus and the $H_2O$ fraction of Pueraria lobata showed the elevation of GST activity. On the experiment of hyaluronidase inhibitory effect, Acorus gramineus exhibited a potent inhibitory activity. These results suggest that the extract of Acorus gramineus can be applicable for the development of a new anti-inflammatory agent.

• Natural Product Sciences
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• v.19 no.4
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• pp.329-336
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• 2013

The purpose of this study is to evaluate cytoprotective effect of Korean medicinal plants on alcohol-induced cytotoxicity in liver cells. Out of the 120 plant extracts tested in this study, 53 plant extracts enhanced alcohol-induced cytotoxicity in liver cells by 50~80%, while other 11 plant extracts including Crataegus pinnatifida reduced cytotoxicity by 1~68%. The results of DPPH free radical test and LDL lipid peroxidation test on the plant extracts that sharply reduced cytotoxicity in liver cells shows that Crataegus pinnatifida and Cinnamomum cassia had antioxidative effect. This study reports that the plant extracts that enhance or reduce ethanol-induced cytotoxicity in liver cells can be research objects as cytotoxic plants or cytotoxicity-protective plants.

• KIEAE Journal
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• v.12 no.4
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• pp.77-82
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• 2012

This study conducted the experiment of reduction of Volatile Organic Compounds(VOCs) and Formaldehyde concentration by Native plants, Fatsia japonica and Ardisia pusilla. The two plants are advantageous in that they are highly available as they grow wild, and being easy to get. Fatsia japonica is a plant of its wide and large leaf diverged 7 or 8 parts, which is thought to have a high effect of air purification. Ardisia pusilla has a smaller leaf than Fatsia japonica, which is characterized by more leaves and beautiful. Field measurements were performed using Fatsia japonica and Ardisia pusilla which were verified as air-purifying plants in Korea. The effect of reducing the concentration of VOCs and Formaldehyde by plant studied in a full scale mock-up model. The dimensions of the two models were equal. The concentration of Benzene, Toluene, Ethylbenzene, Xylene, Stylene, Formaldehyde were monitored, since they were known as most toxic materials. The concentration of VOCs was monitored three hours after the plants were placed and three days after the plants were placed. Field measurements were performed in models where the plants were placed and were not. As a result, they had all an effect of reducing pollution. In all cases of experiment of planting and growing volume, the more planting volume, the more excellent the effect. Toluene was more effective in Fatsia japonica and Ardisia pusilla planted, Formaldehyde was more effective in Fatsia japonica planted respectively. In planting and growing and placing experiment, the placement at sunny spot was more effective than that at scattered growing. When Fatsia japonica was placed at sunny spot, the reduction effect of Formaldehyde was the most excellent, and when Ardisia pusilla was placed at sunny spot, the reduction effect of Toluene was the most effective.

• Journal of Plant Biology
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• v.20 no.2
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• pp.77-82
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• 1977

The inhibiotory effect of ethphon on the flowering in Lemna perpusilla 6746 was shown to be related to sucrose concentrations and dilution factors of Hutner's medium. When grown in 1/10-strength Hutner's medium under 10(14) cycles, the plants have been completely inhibited in the floral induction by ethephon (>5ppm) in the presence of sucrose (>20 mM) in the meduim. However, in a less diluted Hutner's medium (1/2-strength), the inhibition of flowering by ethephon was observed to be partially diminished by sucrose at a high concentration (30mM), while a low concentration of sucrose enhanced the inhibitory effect of ethephon in flowering. As inductive dark periodswere extended, the effects of both compounds were partially nullified. Since no significant amount of ethylene possibly released in ethephon decomposition in the medium was detected, the inhibitory effect of ethephon in flowering was postulated to be exerted only through ethylene production within the plants. Plants were incubated in 10 ppm ethephon-containing medium during either dark or light periods, singly or periodically. The most effective single treatment with ethephon was observed during the 4th dark period, when formation of floral stimulus was assumed to be completed beyond a critical level. This postulation can be partially supported by a fact that the plants should be exposed to at least more than four consecutive 10(14) cycles for flowering.

• Journal of Korean Medicine Rehabilitation
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• v.21 no.1
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• pp.47-56
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• 2011

Objectives : This study was conducted to identify the antimicrobial anti-oxidative and tyrosinase inhibitory effect of three kinds of herbal plants, Polygonum cuspidatum, Chelidonii herba, Pharbitis nil L. naturally grown across the nation. Methods : To investigate in vitro anti-oxidative activity assay, antimicrobial effect and tyrosinase inhibitory activity, MeOH 80% extract, n-hexane, chloroform, ethyl acetate, n-butanol and water fractions of herbal plants were tested by diphenylpicrylhydrazyl(DPPH) method. Results : Bsutanol fractions of each plants showed about 90% on anti-oxidative effect. In case of tyrosinase activity, ethlyacetate fraction of Polygonum cuspidatum showed a potent inhibition effect. In the antimicrobial effect, ethylacetate fraction of Polygonum cuspidatu, hexane fractions of Chelidonii herba and the methanol 80% extracts of Pharbitis nil L. exhibited inhibition effect significantly. Conclusions : In MeOH 80% extracts, we couldn't found any extracts or fractions which have antimicrobial, anti-oxidative and tyrosinase inhibitory activity, however ethylacetate fractions of Polygonum cuspidatum showed effects commonly in these three assay system.

• Journal of the Korean Society of Food Science and Nutrition
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• v.28 no.2
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• pp.365-370
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• 1999

To investigate the effect of natural plants on the prolongation of optimal fermentation time of kakdugi, various kakdugies, added with hot water extract from 105 kinds of natural plants(68 medicinal plants and 37 vegetables), were fermented at 20oC until optimal fermentation time. In case of control without addition, the time required to reach the optimum acidity(0.6% lactic acid) was 60 hr. Among 105 kinds tested, 48 plant(42 medicinal plants and 6vegetables) extracts decreased the acidity after 60 hr fermentation to less than 50% of control. In addition, these extracts extended the optimal fermen tation time(>120 hr) by more than 2 folds. Moreover, among the above 48 kinds, 12 sorts of extracts raised the hardness of kakdugi, by more than 30%, compared to control. And the number of lactic acid bacteria in kakdugi added with the above 12 kinds was not smaller than that of control. In sensory test, 8 kinds of medicinal plants(including Phyllostachys edulis) were found to be acceptable. Based on these results, it is suggested that kakdugi added with 8 kinds of medicinal plants was adequate in the prolongation of optimal fermentation time of kakdugi.

• Korean Journal of Environmental Agriculture
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• v.20 no.5
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• pp.335-339
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• 2001

Two successive in vitro experiments were carried out to examine the effect of MPS bacterial inoculation on growth, and nitrogen and phosphorus accumulation of maize plants under greenhouse condition in the same soil. There were four treatments, uninoculated control and three phosphate solubilizing bacterial inoculations, viz., Pseudomonas striata, Burkholderia cepacia and Serratia marcescens. The inoculated plants showed the higher plant height, total dry mass, nitrogen and phosphorus accumulation when compared to uninoculated control plants in both experiments. In the combined data analysis from two experiments, the plants inoculated with P. striata and B. cepacia showed significantly higher plant height, total dry mass and P accumulation when compared to S. marcescens inoculated plant and uninoculated control plants. The P. striata and B. cepacia inoculation enhanced total dry matter accumulation by 14% and phosphorus accumulation by 25% over the uninoculated control plants. The nitrogen and phosphorus concentration of maize plants were also increased due to MPS bacterial inoculation, however, the effect was not significant.

• 한국약용작물학회:학술대회논문집
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• 2008.05a
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• pp.77-78
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• 2008

• Research in Plant Disease
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• v.8 no.4
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• pp.245-249
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• 2002

Monosporascus cannonballus, a soilborne ascomycetes is recently described in Korea that causes root rot/vine decline of cucurbits. The effect of Monosporascus root rot disease on photosynthetic activity and growth was studied on oriental melon plants. At harvest stage, photosynthetic activity of diseased oriental melon plants was lower and stomatal resistance was higher than healthy plants, while xylem exudates were not observed in diseased plants. There was no difference in mineral contents of the leaves and stems between diseased and healthy plants. Leaf area, fresh and dry weights, and fruit weights of the plants were markedly decreased in diseased plants compared to those of healthy plants.