• Korean Journal of Veterinary Research
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• v.61 no.4
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• pp.38.1-38.8
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• 2021

This study examined the anti-diabetic effects of aqueous extracts of Dendropanax morbifera leaves (DMWEs) in streptozotocin-induced diabetic Sprague-Dawley (SD) rats. Thirty male SD rats (body weight [BW], 250.4 ± 19.7 g) were divided into the following six groups: normal control rats (NC), diabetic control rats (DC), diabetic rats treated with metformin HCl 100 mg/kg BW (DT), diabetic rats treated with DMWEs 50 mg/kg BW (DM-50), diabetic rats treated with DMWEs 100 mg/kg BW (DM-100), and diabetic rats treated with DMWEs 200 mg/kg BW (DM-200). From two weeks of administration of DMWEs, the BW of all groups treated with DMWEs increased significantly compared to DC (p < 0.05). At four weeks after treatment, the blood glucose levels in DT, DM-100, and DM-200 decreased below 200 mg/dL, while the glycated hemoglobin concentrations in all groups administered DMWEs were similar to those of NC and DT. Regarding the blood biochemical parameters, the levels of aspartate transaminase, alanine transaminase, blood urea nitrogen, and creatinine in DM-100 and DM-200 were similar to those in NC and DT. Overall, these results highlight the effectiveness of DM-100 in the treatment of diabetes.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2012.03a
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• pp.28-28
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• 2012

본 연구에서는 한국 특산종으로 남해안 섬에서만 자라는 황칠나무(Dendropanax morbifera Lev., 황칠이라고 함)를 사용하여 염색하였다. 황칠나무는 면역력 증진, 신경 안정, 항균, 항산화에 효능이 있는 것으로 알려져 있다. 황칠염색은 $60^{\circ}C$에서 이루어졌으며, 발효한 액체 황칠을 염료로 사용하였다. 매염제에 따른 염색을 실시하고 CCM을 사용하여 색발현 특성을 알아보았다. 면직물의 경우 대조직물의 K/S값이 0.13에 비해 식소다 동시매염, 고백반 식소다 동시매염, 고백반 동시매염, 고백반 선매염, 황수(영천지역의 약수) 후매염은 각각 1.53, 0.99, 1.62, 1.65, 2.21로 차이가 있었다. 울직물의 경우 대조직물의 K/S값이 0.48에 비해 식소다 동시매염, 고백반 동시매염, 고백반 식소다 동시매염, 고백반 선매염, 황수 후매염은 각각 2.61, 1.97, 3.20, 3.07, 4,59로 차이가 있었다. 견직물의 경우 대조직물의 K/S값이 0.30에 비해 식소다 동시매염, 고백반 동시매염, 고백반 식소다 동시매염, 고백반 선매염, 황수 후매염은 각각 2.06, 1.21, 1,77, 1.80, 3.23로 차이가 있었다. 황수 매염이 식소다나 백반 매염보다 효과가 있는 것을 알 수 있었으며, 매염의 순서에 따라서도 차이가 나는 것을 알 수 있었다.

• Korean Journal of Medicinal Crop Science
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• v.10 no.2
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• pp.109-115
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• 2002

The immune activation activities of ethanol, ethanol : water(1 : 1,v/v) and water extracts from Dendropanax morbifera Lev. were compared. The crude extracts showed relatively low cytotoxicity as less than 26% by using human normal liver cell(WRL-68). For example, the ethanol extract inhibited. in MCF7 and Hep3B cells in adding 1.0 mg/mL ethanol extracts. The growth of human immune T and B cells was enhanced up to $1.22{\sim}1.27$ times by adding the crude extracts. These are a trend of increasing secretion of $cytokines(IL-6,\;TNF-{\alpha})$ from human B/T cell for 6 day cultivation. It was found that the immune activation activities of the crude extracts seemed to be higher than those obtained by using other solvents.

• Journal of the Korean Wood Science and Technology
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• v.26 no.3
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• pp.73-80
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• 1998

In order to reconstruct the traditional technology of Korean golden varnish coatings, this study was carried out to separate and determine some main coloring components of the exudates of D. morbifera and its traditionally refined golden varnishes using a process of solvent extractions, chromatographies and spectrometries. The results obtained are as follows: 1. The exudate and its traditional-refined golden varnishes appear to have a kind of natural polyacetylenes because it has some triple bond peaks in FT-IR spectrometry. 2. Some yellowing spots of the polar-solvent extrats from the exudates and refined varnishes separated on TLC appeared under natural drying condition, but those of non-polar solvent extract such as hexane did not. 3. A traditional refining method for reconstructing a Korea golden varnishes was thought to be better than solvent separation because the former had higher triple-bond peaks than the latter in FT-IR spectrometry. 4. One of main conponents in the hexane-extracts of the traditional-refined varnishes and the exudates had the same molcular weighr of 204, but the fragmentation patterns was a little different between the exudate and the refined. in LC-MS soectrometry.

• Korean Journal of Plant Resources
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• v.11 no.1
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• pp.101-105
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• 1998

This study was carried out to find out the method of increasing seed germination rate of Dendropanax morbifera LEV. was drupaceous fruit. The length and width of ovarywas 7.8 to 10.7mm, 6.9 to 9.0mm, respectively, and the shape was elliptical. The ovary had 5 loculi with one speed per loculus , but one seed among 5 weeds was exalbuminous seed. The length and width of seed was 6.3 to 7.4mm, 2.0 to2.mm, respectively, and 1,000 seed weight was 14.3 to 18.0g. Seeding after stroring at $10^{\circ}C$ for 60 to 90 days was germinated to 87% . However, fall seeding directly after harvest was increased to 85% at hot-water treatement ($40^{\circ}C$) for 90 to 120 minute.

• Korean Journal of Medicinal Crop Science
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• v.10 no.2
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• pp.126-131
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• 2002

We investigated the high yield capacity of Hwangchil lacquer for selection and identification of major aromatic components of the selected trees as well. The Hwangchil lacquer showed the difference yields by different habitat, tree ages and individual character. The selected trees showed high yield capacity of Hwangchil lacquer. We also investigated the essential oil contents and its the main components to analysis the potent of mass propagation. The major compounds were 1,6-atadiene-3-ol., ${\alpha}-terpinene,\;{\alpha}-cubebene,\;{\alpha}-ylangene,\;{\alpha}-copane,\;{\beta}-elemene,\;germacrene-D,\;{\beta}-selinene,\;{\alpha}-selinene,\;{\delta}-cadinene,{\gamma}-cardinene$, germacrene B, germacrene D-4-ol. The most principle component was germacrene D among them respectively. However, the difference of relative content ratio of each major compound was showed by individuals, population and native areas in the selected trees.

• Journal of the Korean Wood Science and Technology
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• v.38 no.4
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• pp.333-340
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• 2010

The Korean Dendropanax lacquer, made from a natural resinous sap from Dendropanax orbifera Lev., was used as a golden and transparent varnish for the traditional artifacts (armor uits, helmets, arrowheads, etc.) to make them be brilliant golden color. The cured film of the acquer has excellent protective properties such as weatherability, water resistance, and nticorrosive. But, one of disadvantages is that takes a long time and much energy to fulfill curing the lacquer. The chemical constituents of the lacquer contained conjugated diene compounds s the photopolymerizable monomers. These monomers easily polymerized in sunlight to form olden-colored, hard-coating films in a short time. Photooxidation may be one of the most mportant reactions in the chemistry of the lacquer. Although the Korean Dendropanax Lacquer hould be dried to a thoroughly dry stage to achieve optimal film properties, curing with elevated emperatures may be required for the protracted curing time at atmospheric temperature. So we ntended to accelerate the curing rate of the lacquer by dual curing of thermal and radiation uring. The effect of thermal initiator on the thermal curing reaction was evaluated by monitoring he changes in double bond peak with FT-IR. Then the curing rate of the lacquer blended with hermal initiator and photoinitiator together was measured during dual curing using a RPT with V spot curing machine. Thermal initiator not only accelerated the curing rate but also improved he physical property. And the curing rate of the Korean Dendropanax lacquer was improved by ual curing method of thermal and UV curing. According to these results, the application area of he Korean Dendropanax lacquer could be expanded to surface coatings for electronic devices uch as mobile phones or electronics.

• Journal of Korean Society of Forest Science
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• v.106 no.4
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• pp.397-407
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• 2017

This research aims to analyze and compare the drought resistance of 7 species of landscape trees commonly grown in Korea. The 7 species are: Camellia japonica, Rhaphiolepis indica, Quercus glauca, Machilus thunbergii, Daphniphyllum macropodum, Dendropanax morbifera and Cinnamomum camphora. In order to analyze their drought resistance, the samples were left without irrigation for 30 days (05/09/2016 ~ 05/10/2016), during which period their respective drought resistor, relative water content, electrolyte elution figures and proline content were measured. As the non-irrigation proceeded, C. camphora was the first to wither, followed by D. morbifera, then D. macropodum, then M. thunbergii, then Q. glauca, then R. indica then finally C. japonica. Of the 7 species, Q. glauca, C. japonica and R. indica can be considered highly drought resistant, since they survived for longer than 3 weeks without irrigation. Relative water content (RWC) plummeted dramatically after the first 15 days of non-irrigation. Whereas RWC readings of C. camphora, D. morbifera, D. macropodum and M. tunbergii dropped by 40% or more, the other 4 species reported a relatively low rate of decrease at 20% or lower. The Camellia japonica, the R. indica and Q. glauca, which were the species with relatively high drought resistance, showed low proline content and electrolyte elution figures, whereas those of C. camphora, D. macropodum, D. morbifera and M. tunbergii were higher. Analysis through the nonlinear regression analysis logistic model showed that non-irrigation proved fatal for the 7 sample species in a range of 22.7 to 37.6 days. The C. japonica, R. indica, Q. glauca and M. tunbergii demonstrated a high drought resistance of 30 days or longer, whereas C. camphora, D. morbifera and D. macropodum had a low resistance of 25 days or less to drought from lack of water. In conclusion, out of the 7 species of broad-leaved evergreen trees tested, C. japonica, R. indica and Q. glauca seem to be suitable for use as landscape trees, owing to their high drought resistance.

• 한국약용작물학회:학술대회논문집
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• 2011.04a
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• pp.264-265
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• 2011

• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.236-237
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• 2011