• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2001.11a
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• pp.46-46
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• 2001

• Culinary science and hospitality research
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• v.21 no.6
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• pp.255-263
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• 2015

This study was conducted to test the fermenting of high quality vinegar using Wasabi japonica Matsum leaves. Alcohol fermentation with Wasabi japonica Matsum leaves resulted in the reduction of sugar and sugar alcohol content during fermentation, which decreased sharply over 3 days. The alcohol content was maximized (15.4%) after 8-days of alcohol fermentation at $27^{\circ}C$ by adjusting the initial sugar concentration to $27^{\circ}Brix$, and vinegar with an acidity of 5.1% was obtained after 21-days of acetic acid fermentation at $30^{\circ}C$. The pH was shown to be 3.5 after 21-days of acetic acid fermentation at $30^{\circ}C$. Regarding the color of Wasabi japonica Matsum leaves vinegar, the L and b values increased according to fermentation time, whereas a color values decreased. In conclusion, based on the above results, it is determined that the use of Wasabi japonica Matsum leaves allows for the production of high-quality vinegar.

• KSBB Journal
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• v.15 no.3
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• pp.226-231
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• 2000

Antibacterial activities of edible plant extracts were investigated to develop natural antimicrobial agents protecting horticultural products from spoiling-microorganisms during their storage. Crude extracts of Artemisa capillaris Allium tuberosum Ailanthus altissima Zanthoxylum pieperitum Pinus densiflora Morus alba lxeris dentata and Allium sativum showed remarkable antibacterial activities against Escherichia coli K 12 and Bacillus subtilis KCTC 1028 After solvent extraction of the crude extracts with n-hexane ethyl acetate chloroform and water in sequence each fractions was re-examined for the antbacterial activities. As results the ethyl acetate fractions of A. capillaris Aaltissima, P. densiflora and I. dentata and all fractions of Z. piperitum and A. sativium showed relatively strong antibacterial activities against E. coli and B. subtilis and the ethyl acetate fraction of A. altissima was the strongest(6mm and 7mm respectively) against two strawberry-spoiling bacteria isolated and identified at our laboratory as Staphylococcus sp. TG-101 and Staphylococcus sp. TG-102.

• Culinary science and hospitality research
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• v.20 no.6
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• pp.128-135
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• 2014

The purpose of this study was to determine the desirable mixture ratio of Rubus coreanus Miquel leaf powder to rice flour for the preparation of sulgidduk. The moisture of samples raged from 41.92% to 38.21%. The addition of Rubus coreanus Miquel leaf powder in the Sulgidduk tended to decrease the lightness (L) in Hunter color value, but to increase the redness (a) and yellowness (b). With increasing Rubus coreanus Miquel leaf powder level, the hardness of the samples decreased and their springiness, cohesiveness and chewiness increased. In sensory evaluation, the addition of 5% Rubus coreanus Miquel leaf powder showed the best score in taste and overall preference. Therefore, these results suggested that the addition of 5% Rubus coreanus Miquel leaf powder could be applied for making Rubus coreanus Miquel leaf powder sulgidduk.

• Weed & Turfgrass Science
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• v.2 no.3
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• pp.306-311
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• 2013

Pythium blight occurred by Pythium aphanidermatum on chewing fescue cv. "Jamestowm II" from early June, 2010 and 2011 at the test field in Daegu University in Gyeongbuk Province, Korea. Disease symptoms on the turfgrass were leaf blights dying from the leaf tip and root rot, which appeared patches of brown to dark brown color or gray brown color in the field. The pathogens (40-1 isolate) of Pythium blight was isolated from the diseased leaf and crown tissue and cultured on potato-dextrose agar (PDA) for identification. Lobulate sporangia were inflated, complex structures, and filamentous sporangia were usually indistinguishable from vegetative hyphae. Sequences of ribosomal RNA gene of the fungus were homologous with similarity of 100% to those of P. aphanidermatum isolates in GenBank database. Pathogenicity was also confirmed on the chewing fescue, creeping betgrass and Kentucky bluegrass by Koch's postulates. This is the first report of Pythium blight on chewing fescue caused by P. aphanidermatum in Korea.

• Korean Journal of Environmental Agriculture
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• v.17 no.2
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• pp.117-121
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• 1998

In the study to reduce the error on the method of sampling pine needles to monitor the atmospheric concentration of polychlorinated biphenyls(PBCs),it was found that: 1. Concentration of PCBs almost linearly increased from new to three-years-old pine needles, so that the biomonitoring method using pine needles canbe applied to measuring long-term contamination from air in a local area. Needles of differernt age should not be mixed in sampling but be seperately analysed .It no good idea comparing PCB concentrations of differently aged needles. 2. Concentratio n of PCBs on pine needles had nothing to do whit the indivisual and age of the pine tree. 3. Concentration of PCBs on pine needles growing avobe was lower than that on needke below. 4. Concentration of PCBs on pine needles locatied in poorly ventilative places such as needle of a forest was lower than that on needles in well-ventilated areas.

• Research in Plant Disease
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• v.11 no.1
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• pp.77-79
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• 2005

Leaf blight of kudzu was found in Jeonbuk province in 2002. Water-soaked lesion appeared on leaves, and young stems and gray green blight sypmtom expanded from margin to main vine of leaves. As the disease became severe, blighted leaves and shoots turned dark brown and then collapsed. The causal pathgen showed initially white aerial mycelium and turned brown to gray. Mycelia were branched at 90o angles and multinucleate in one cell. It formed sclerotia on PDA. Slerotia were irregular, globose and 0.5~3.0 mm in diameter. The causal fungus of leaf blight was identified as Rhizoctonia solani Kuhn based on the cultural and morphological characteristics. This is the first report on leaf blight of kudzu caused by R. solani in Korea.

• Korean journal of applied entomology
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• v.42 no.4
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• pp.301-305
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• 2003

This study investigated the ecological characteristics of Frankliniella occidentalis on four horticultural crops. On red pepper leaves, larval developmental period and survival rate of F. occidentalis were 6.4 days and 67%, respectively. While adult female lived longer on cucumber leaves as long as 16 days, on Petal lived 8.1 days. F. occidentalis adult female preferred tomato to eggplant, cucumber and red pepper, and higher number of hatched larva were from leaves of middle part of egg-plant compared with those from other parts. F. occidentalis adult female fed preferably on petal compared with leaves and Petals of eggplant, and among petals of four tested plants, the most preference was those of red pepper.

• Korean Journal of Plant Taxonomy
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• v.33 no.4
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• pp.393-409
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• 2003

Morphological and anatomical characters of selected 3 taxa of Rhynchospora were reexamined. The epidermal patterns of achene and leaf were investigated using a scanning electron microscope (SEM) and a light microscope (LM). Morphological characters such as length and width of bract, spikelet, scale, achene, stem, leaf and leaf sheath, and shape of inflorescence, spikelet, scale, apex of scale, perigynium and achene, and number of stigma and anatomical characters (transectional shape of the stem, and leaf: vascular bundles in stem and leaf epidermal patterns: shape of fundamental epidermal cell and cell wall, type of silica body, subsidiary cell shape, size and frequency of stomatal complex of leaf) were useful for the identification. Keys based on data were presented here.

• Korean Journal of Food Science and Technology
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• v.43 no.1
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• pp.83-90
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• 2011

This study was performed to investigate the effects of ramie (Boehmeria nivea) leaf powder on improvements in lipid metabolism in serum, liver and adipose tissue, and the anti-obesity effect in rats fed a high fat/high cholesterol diet for 4 weeks to induce a hyperlipidemic and obese model rat. Male Sprague-Dawley rats weighting 210 g were divided into four groups; a normal diet group (N), a high fat/high cholesterol diet group (HFC), a high fat/high cholesterol diet with 5% ramie leaf powder group (HFC-RL), and a high fat/high cholesterol diet with 10% ramie leaf powder group (HFC-RH). The body weight gain increased with a high fat/high cholesterol diet, but gradually decreased in the ramie leaf powder fed groups compared with the HFC group. The liver index in the HFC group was highest among the four groups, although the difference was not significant compared with the ramie leaf powder fed groups. The adipose tissues weight in the HFC group was heavier than that of the N group, whereas those of groups fed ramie leaf powder decreased gradually. Alkaline phosphatase activity was not different between the HFC groups, but serum alkaline aminotransferase and lactate dehydrogenase activities decreased significantly after ramie leaf powder feeding. Levels of serum triglyceride, total cholesterol, LDL-cholesterol, atherogenic index and cardiac risk factors tended to decrease in the ramie leaf powder fed groups compared with the HFC group, whereas serum HDL-cholesterol level decreased in the HFC group and markedly increased in the ramie leaf powder fed groups. Levels of triglyceride and total cholesterol in the liver were significantly lower in the ramie leaf powder fed groups than in the HFC group. Levels of triglyceride and total cholesterol in adipose tissues were also lower in the ramie leaves powder fed groups than in the HFC group. The activities of heparinreleasable lipoprotein lipase (LPL) and total-extractable LPL in adipose tissues increased in the HFC group compared to that of the N group, but those of the ramie leaf powder fed groups decreased significantly. These results suggest that ramie leaf powder may improve lipid metabolism in serum, liver and adipose tissue and potentially reduce lipid storage.