• Journal of the Korean Society of Food Science and Nutrition
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• v.36 no.12
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• pp.1517-1522
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• 2007

Inhibitory effects of allergic contact dermatitis of hot water extract of Duchung (Eucommia ulmoides Oliver) leaf, bark and stem growing at Sancheong-gun were investigated for female BALB/c mouse induced by repeat elicitation of DNCB (2,4-dinitro-chlorobenzene). Skin reactions, consisting of increased ear thickness and the presence of ear inflammation, were observed in mice treated with DNCB and Duchung. Weight of lymph node, spleen and thymus in mice treated with Duchung extracts were lower than that of mouse treated with DNCB. Ear weight of mouse treated with Duchung extracts was decreased by increasing the concentration of sample as compared to control group and dropped as low as control level at 1,000 mg/kg. Ear thickness became thinner as test time on Duchung extract progressed. MDA (malondialdehyde) contents in liver tissue were not different in sample group with DNCB group, but were different in ear tissue. NO (nitric oxide) contents was decreased in Duchung extract groups at serum and ear tissues as compared to 1% DNCB group. In the present study, the results suggested that Duchung extract inhibits inflammatory response and oxidative damage induced DNCB allergen.

• Journal of Nutrition and Health
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• v.30 no.8
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• pp.895-903
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• 1997

This study was performed to investigate the influence of dietray food from the three CHinese medicinal herbs(Mugwort, Dried organge peel and Duchung) on lipi d metabolism in rats. Male rats of Sprague-Dawley strain were divided into four dietary groups(Cellulose (CL), Mugwort(MW), Dried organge peel9OP), Duchung(DC)) after three weeks of hyperlipidemic dieting and were fed ad libitum each of the experimental diets for six weeks. The fiber sources of the experimental diets were prepared by drying and milling mugwort, orange peel, duchung and cellulose. Each of the Fiber sources was mixed into the diet to achieve 10g% levels of total dietary fiber. Levels of apparent fat absorption exhibited a significant decrease in the MW and DC groups. The OP group also showed a decreasing trend, but to a lesser extent. The levels of serum total lipid were not significantly different among the four experimental groups. Total serum cholesterol levels were significantly lower in the OP grop that in both the CM and MW group. Serum TG and LDL-cholesterol levels were significantly higher in the DL group than other groups. Serum HDL-cholesterol levels were significantly levels were significantly lower in the CL group than in the other groups. Total lipid and total cholesterol in liver were significantly higher in the CL group than in the other groups. Total lipid and total cholesterol in feces displayed a significantly increase in the MW and DC groups when compared with the CL group. The OP group also showed an increase compared to the CL group.

• Korean journal of food and cookery science
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• v.17 no.4
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• pp.353-358
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• 2001

The leaves of Duchung(Eucommia ulmoides), an oriental medicinal plant, have a peculiar aroma of Chinese medicine and astringent taste, which make the consumer be reluctant to Duchung leaf tea. Therefore, the purpose of this study was to develop a mild flavored Duchung leaf tea by mixing with other plants. The flavor patterns of developed tea were analyzed using an electronic nose. Polygonatum odoratum and Elsholtzia splendens were used for improving the flavor of Duchung leaf tea. The addition of 20, 30 and 40% of Polygonatum odoratum improved the overall acceptance in hedonic sensory evaluation. The flavor pattern of the tea was described by principal component analysis(PCA) and the resistance ratio(R/cub gas/R$\_$air/) of sensors. The PCA plot was also used to explain the mild flavor of the tea, which was extended from the right side(positive value of the first principal component) to the left side(negative value). Analysis by using an electronic nose with metal oxide sensors could be applied to detect whether mixed Duchung leaf tea was acceptable or not.

• Korean Journal of Food Science and Technology
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• v.22 no.4
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• pp.405-410
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• 1990

The aroma components of duchung tea and persimmon leaf tea were collected simultaneous distillation and extraction method. Those were analyzed and identified by GC-MS using a fused sillica capillary column. Seventy seven components, including 17 alcohols, 3 hydrocarbons, 15 ketones, 16 aldehydes, 8 esters,8 acids, 8 heterocyclic compounds and 2 phenols were confirmed in duchung tea. Seventy one components, including 17 alcohols, 10 hydrocabrons, 11 ketones, 13 aldehydes, 8 esters, 6 acids, 5 heterocyclic compounds and 1 phenol were confirmed in persimmon leaf tea. The most abundant components of duchung tea were aldehydes(23.31%) including 2-pentenal and heterocyclic compounds(16.71%) including $epoxy-{\beta}-ionone$. The most abundant components of persimmon leaf tea were alcohols(25.57%) including linalool and aldehydes(19.45%) including hexanal and hydrocarbons(10.40%) including ${\alpha}-copaene$.

• Journal of Oriental Neuropsychiatry
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• v.16 no.2
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• pp.73-88
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• 2005

Object : This study was designed to asses the effect of Kunnuetang and herbs on Mouse neuroblastoma 2a cells damaged by hypoxia-reoxygenation. Method : Mouse neuroblastoma 2a (N2a) cells were measured by MTT assay and LDH assay after 48h hypoxia and 6h reoxygenation. Mouse neuroblastoma 2a (N2a) cells were treated by Kunnuetang, Duchang and Daejo. Result : 1. Kunnuetang, was effective on LDH assay of hypoxia and reoxygenation. 2. Duchang and Daejo were generally effective on LDH assay of hypoxia and reoxygenation. 3. In MTT assay of hypoxia Kunnuetang was not effective. Duchung and Daejo were not generally effective on MTT assay, but in certain condition Herbs were effective. 4. In MTT assay of reoxygenation Kunnuetang and Daejo were not effective. But Duchung was effective in certain condition. Conclusion : The results suggest that Kunnuetang, Duchang and Daejo may have protective effect on vascular dementia and ad patient.

• Molecular & Cellular Toxicology
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• v.4 no.3
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• pp.224-229
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• 2008

Eucommia ulmoides (Duchung) is commonly used for treatment of diabetes in Korean traditional medicine. However, the exact mechanism of its anti-diabetic effect has not yet been fully elucidated. In this study, the effect of E. ulmoides extract on glucose uptake was investigated in L6 rat skeletal muscle cells. E. ulmoides extract stimulated the activity of phosphatidylinositol (PI) 3-kinase that is a major regulatory molecule in glucose uptake pathway. Protein kinase B (PKB) and protein kinase C-${\xi}$ (PKC-${\xi}$), downstream mediators of PI 3-kinase, were also activated by E. ulmoides extract. We assessed the activity of AMP-activated protein kinase (AMPK), another regulatory molecule in glucose uptake pathway. Phosphorylation level of AMPK did not change with treatment of E. ulmoides extract. Phosphorylations of p38 mitogen activated protein kinase (p38 MAPK) and acetyl-CoA carboxylase (ACC), downstream mediators of AMPK, were not significantly different. Taken together, our results suggest that E. ulmoides may stimulate glucose uptake through PI 3-kinase but not AMPK in L6 skeletal muscle cells.

• The Journal of Korea CHUNA Manual Medicine
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• v.1 no.1
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• pp.91-102
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• 2000

To prove the effect of Yukmijihwngwon(YMJHW) and Taeyoungjeon(TYJ) extract on the Meridian of Human body and Active oxygen experimentally, ORS & Free Radical of extract and precipitate of YMJHW and TYJ was measured. The results were summarized as follows; 1. TYJ extract, as a result of measuring QRIS, had a considerable effect on the function of pituitary gland, the 4th cervical vertebra and the 1 st lumbar vertebra. 2. TYJ precipitate, as a result of measuring QRIS, had a considerable effect on the function of liver, uterus, and vertebra. 3. YMJHW extract, as a result of measuring QRIS, had a considerable effect on the function of lung, adrenalin gland, bladder, prostate gland, ovaria, the 2nd cervical vertebra, the 3rd cervical vertebra, the 5th cervical vertebra, the 6th cervical vertebra, the 2nd lumbar vertebra, the 4th lumbar vertebra and the 5th lumbar vertebra. 4. YMJHW precipitate, as a result of measuring QRIS, had a considerable effect on the function of spleen, lung, kidney, adrenal gland, bladder, ovaria, the 2nd cervical vertebra, the 6th cervical vertebra, the 7th cervical vertebra, the 2nd lumbar vertebra, the 5th lumbar vertebra, sacrum, and knee joint. 5. As a result of measuring Free Radical, the level of TYJ is higher than YMJHW. It is thiut that's because of Duchung and roasted Gamcho. 6. As an order of QRIS levels, YMJHW precipitate is the highest, YMJHW extract is next, TYJ extract and TYJ precipitate. These results suggested that TYJ and YMJHW be usefully applied for suppressing of abnormal Meridian and noxious oxygen, preventing and curing all the disease.

• The Journal of the Convergence on Culture Technology
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• v.1 no.4
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• pp.1-11
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• 2015

This article examines the types of Sujeonggwa as recorded in 15 royal palace studies of the Joseon dynasty (1392-1909). The types of Sujeonggwa during the Joseon dynasty appeared Sujeonggwa(水正果), Geunsi-Sujeonggwa, Saengri-Sujeonggwa(生梨水正果), Weigamja-Sujeonggwa(倭柑子水正果), Gareun-Sujeonggwa(假蓮水正果), Yuja-Sujeonggwa(柚子水正果), Jabgwa-Sujeonggwa(雜果水正果), Duchung-Sujeonggwa (杜沖水正果), Yukyeldo-Sujeonggwa(六月桃水正果), Bokbunja-Sujeonggwa(覆盆子水正果), Aengdo-Sujeonggwa(櫻桃水正 果), Sansa-Sujeonggwa(山査水正果. The frequency of the Sujeonggwa types during the Joseon dynasty in order were; Geunsi-Sujeonggwa(20%), Saengri-Sujeonggwa(生梨水正果)r(15%), Sujeonggwa(水正果)(10%), Weigamja-Sujeonggwa(倭柑子水正果)(10%), Gareun-Sujeonggwa(假蓮水正果)(10%). The other Sujeonggwa each(5%). Through this study, through new lighting and menu development for Sujeonggwa used as a basis for hope to contribute to the globalization of Korean food.