• Title/Summary/Keyword: lacquer tree

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Production of High Quality Pork with Feed Additives of Lacquer Tree Extracts and Development of Meat Processing Technique V. Lymphocyte Distribution and Morphological Change in Small Intestine of Pigs after Fed with Fermented Lacquer Tree Extracts (옻 추출물을 이용한 돈육의 생산과 가공기술의 개발 V. 옻 추출물 급여 후 돼지 림프구의 분포와 소장 점막 내부의 형태 변화)

  • Kim, Sang-Hyun;Seuong, Nak-Ju;Park, Joong-Choon;Choi, Chung-Kuk;Song, Young-Min;Cho, Kyu-Woan;Cha, Hye-Jin;Kim, Yong-Hwan
    • Journal of Veterinary Clinics
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    • v.25 no.4
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    • pp.268-273
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    • 2008
  • For evaluation of immune stimulation effect of lacquer tree extracts, lymphocytes were counted by labeling of FITC-conjugated monoclonal antibody in the pheripheral blood of pigs that fed with a fodder supplemented by lacquer tree extracts. Populations of MHC-II+, CD4+, and CD8+T lymphocytes were increased more than 2% level after 1 week feed supply of the lacquer tree extracts. The increase of those T cells reached at maximum level after 2 weeks in the tested group. B lympyocytes with surface IgM were increased 5% after 1 week feed supply of the lacquer tree extracts, and their numbers reached maximum after 2 weeks in the tested group. For the assessment of cytotoxicity of the lacquer tree extracts, morphological changes were examined on the epithelial cells of small intestine from pigs fed with a fodder supplemented by 0.1 % lacquer tree extracts for 6 weeks (the tested group). Thin-sectioned tissue of small intestine was fixed with glutaraldehyde, then coated with gold particles, and the specimen was examined under scanning electron microscope. The villi on the mucus membrane of jejunum and ileum from the tested pigswere enlarged on the tip and were linked each other.

Correlation Analysis on Several Factors and Collection Amount of Rhus Lacquer by the Sex of Rhus verniciflua (옻나무의 암수에 따른 주요인자와 옻채취량의 상관분석)

  • Song Byong-Min;Lee Cheol
    • Korean Journal of Plant Resources
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    • v.18 no.2
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    • pp.279-284
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    • 2005
  • The study was conducted to investigate the correlation and regression analysis between the factors - diameter, hight and crown width - and collection amount of Rhus lacquer by the sex of Rhus verniciflua. The relationship between the diameter and the collection amount of the lacquer by the sex of the lacquer tree indicated that, for both of the male and the female, the lacquer amount was likely to increase as the diameter got larger. In general, the male trees tended towards the higher amount of the lacquer than the female. The relationship between the crown width and the collection amount of the lacquer by the sex showed little difference. As the crown became wider, however, the lacquer amount showed the increasing trend. The regression analysis by the sex of the tree indicated that the major factors of the female had larger influence on the lacquer amount than those of the male. The no differences of statistical significance were found among the diameter, the height, the crown width, and the lacquer amount.

Antioxidative Activities of Rhus verniciflua Bark from Different Area (산지별 옻피의 항산화 활성과 옻닭국 기호특성 비교)

  • Park, Sung-Jin;Yang, Byung-Wook;Hahm, Young-Tae;Oh, Deog-Hwan;Kim, Jung-Beom;Yang, Ji-Yun;Kang, Byung-Sun
    • The Korean Journal of Food And Nutrition
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    • v.25 no.3
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    • pp.430-435
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    • 2012
  • The objectives of this study were to form comparisons of total polyphenol compounds, the antioxidant activities and the urushiol contents of lacquer tree(Rhus verniciflua) bark and the sensory properties of chicken soup was made with lacquer tree bark that was cultivated from different cultivation areas; Hamyang, Wonju and China. Total polyphenol contents of Hamyang, Wonju and China were estimated as $375.28{\pm}3.48$, $403.60{\pm}6.6$ and $311.06{\pm}4.99$ mg/g. The total flavonoids contents of Hamyang, Wonju and China were measured as $374{\pm}14.12$, $683.70{\pm}12.64$ and $334.64{\pm}18.40$ mg/g. The total phenolic compounds and flavonoids concentration, DPPH radical scavenging activity, and ABTS radical scavenging of lacquer tree cultivated in Wonju were higher than the others; Hamyang and China. The urushiol content of lacquer tree bark from Hamyang was $4.59{\pm}0.04$ ppm and higher than others. Urushiol was not detected in China lacquer tree bark. Sensory evaluation tests for chicken soup containing lacquer tree bark showed that the scores of Wonju lacquer tree bark chicken soup was highest, however there are no differences between Hamyang, Wonju, and China significantly(p<0.05).

The analysis of the urushiol congeners from the extracts of lacquer trees (옻나무 추출물 중 우루시올 동종체의 함량비 분석)

  • Cho, Yumi;Jung, Yu-Kyung;Kim, Jinsan;Lee, Joonbae;Paeng, Ki-Jung
    • Analytical Science and Technology
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    • v.22 no.1
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    • pp.65-74
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    • 2009
  • Active components of lacquer tree referred to as urushiol congeners, which are catechol derivatives with various alkyl or alkenyl substituents. The olefin side chains typically have one, two or three double bonds. In this study, the each congener's ratio analysis of extracts from korean lacquer tree are compared to the one from other asian lacquer tree. Extraction was performed using liquid-liquid extraction (LLE) method with soxhlet system from tree's bark and sap. Extracts were analyzed by reverse phase liquid chromatography and on-line electro spray ionization mass spectrometry (LC-MS/MS).

Constituent Alterations of Pueraiae Radix and Lacquer Tree Mixture Extract and their Anti-allergic Effects (갈근과 옻 혼합추출물의 성분변화 및 항알러지 효과)

  • Jeong, Yong Joon;Yang, Yoon Jung;Kang, Se Chan
    • Korean Journal of Plant Resources
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    • v.26 no.1
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    • pp.103-110
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    • 2013
  • Lacquer has traditionally been used to varnish. Many reports have revealed that lacquer has anti-microbical, anti-cancer, and anti-inflammatory activities. However, urushiol and their derivatives were known as an allergen. Therefore, we expected that lacquer will be used as a good health-food source if its side effect was solved. Here we analyzed their allergy induced constituents by using the GC/MS and evaluated comparative concentration of lacquer, puerariae radix and their mixture extracts. Our results showed that lacquer extract has allergenic compounds and mixture extract with puerariae radix has relatively lower amount. However, lacquer/puerariae mixture extract has strong anti-allergenic effects on the RBL-2H3 cell and puerariae extract was blocked allergenic effect caused by allergenic constituents contained in lacquer.

Comparison of Urushiol Composition and Biological Activity between Fresh Sap and Fire Distilled Sap of Lacquer Tree (생칠과 화칠의 우루시올 조성 및 생리활성 비교)

  • 김명조
    • Korean Journal of Plant Resources
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    • v.11 no.1
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    • pp.40-46
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    • 1998
  • For the comparison of the urushiol composition and biological acitivity between the fresh sap and fire distilled sap of lacquer tree(Rhus vernicifera), we analysed the urushiol composition by HPLC and EI-MS, and investigated the antioxidative , antimicrobial and anticancer acitivities according to solvent fractionations. There was no difference in the urushiol composition between fresh and fire distilled saps of lacquer tree. The hexane frqctionsof two saps showed a strong DPPH radical scaverging activity (RC50 : 7.0-7.5$\mu\textrm{g}$). They also showed a strong antifungal activity onthe spore germination of Cladosporium herbarum(MIC : 8$\mu\textrm{g}$/ml), whereas they have no or low activity against the bacteria(BAcillus subtilis , Escherichia coli). In addition , hexane and butanol fractions of two saps showed a strong inhibitory activity against cultured tumour cell lines (GI50 : 0.35, 12.29$\mu\textrm{g}$/ml) in vitro. These results confirm that the fresh sap and fire distilled sap might have the similar urushiol compositions and biological activities.

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Effects of Cutting Media in Root Cuttings of Lacquer Tree (Rhus verniciflua Stokes) (옻나무 근삽시 삽상배지의 효과)

  • 두홍수;권태호;양문식
    • Korean Journal of Plant Resources
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    • v.14 no.3
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    • pp.241-246
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    • 2001
  • Effects of cutting media on shooting and seedling characteristics were investigated to determine productivity of seedling by root cuttings of lacquer tree. Shoots developed at 3 weeks after cut planting on PV (peat moss : Vermiculite : 1 : 1), PVS (peat moss : Vermiculite : Sand : 1 : 1 : 2) and PVSC (peat moss : Vermiculite : Sand : Clay loam : 1 : 1 : 2 : 2) media, and shooting rate was the highest in PVSC medium at 10 weeks after cut planting among the treatments. Shooting numbers per scion on PH and PVC media were 2.2 but those on HSC medium was 1.3, which was not significantly different among media. PVSC medium was suitable to use the root cuttings of lacquer tree as it meets the qualifications requirements. Seedlings on PVSC medium were excellent to transplant in field as tree height, branch number, leaf number, stem diameter and leaf area were good.

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Analysis of Flat Board-shaped Lacquer ware Excavated from Daho-ri in Changwon, Korea (다호리 출토 판상 칠기의 재질 분석)

  • Kim, Soochul;Park, Minsoo;Yun, Eunyoung
    • Conservation Science in Museum
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    • v.13
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    • pp.33-36
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    • 2012
  • Analysis of Flat board-shaped Lacquer ware excavated from Daho-ri was conducted. The result of species identification is identifed as Pinus spp. As a result of microscopic observation, lacquer fragment is consist of 5 layers and its thickness is about 100 ㎛. Infrared spectroscopy of the lacquer ware revealed that they had a very similar absorption band as refined lacquer, confirming that they were painted with lacquer. Result of Analysis for Circular metal ornament is alloy smelted by tin and lead. It is called Pewter. While The species of wooden objects investigated until now is broad-leaved tree; the species of flat board-shaped lacquer ware is conifer.

Antifungal Activity of Urushiol Components in the Sap of Korean Lacquer Tree (Rhus vernicifera Stokes)

  • Kim, Myong-Jo;Kim, Chang-Jin;Kwak, Sang-Soo
    • Korean Journal of Plant Resources
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    • v.10 no.3
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    • pp.231-234
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    • 1997
  • Four urushiol components isolated from the sap of Korean lacquer tree(Rhus vernicifera Stokes) showed a strong antifungal activity, but they have no or low activity the bacteria and yeasts. Among them, 3-pentadecylcatechol marked the highest activity on the spore germination of Cladosporium herbarum ($MIC:4{\mu}g/ml$).

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Bark Production Analysis on Top Branch of Rhus verniciflua (옻나무 우죽의 수피생산량 분석)

  • Song Byong-Min;Lee Myoung-Sun
    • Korean Journal of Plant Resources
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    • v.18 no.2
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    • pp.337-342
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    • 2005
  • This study was conducted to investigate the bark production from a top branch(Woojuk) of lacquer tree(Rhus verniciflua) that collected Rhus lacquer in summer, analyzing a relationship between several factors - diameter, tree weight, weight of Woojuk and bark. The weight of Woojuk averaged was made up $48\%$ of the tree on average. As the weight of the tree increased, however, the Woojuk showed the rising trend. It was turned out that the tree size for making 1kg of dry bark must be at least DBB 8cm. The result on Woojuk's bark was that $43.3\%$ of total trees produced a green bark of 1.1kg to 1.5kg, and most of them put out 1.5kg and less. Also the rate of trees to make 0.6kg to 1.0kg of dry bark was highest in $50.8\%$, but its production in most trees was 1.0kg and below. As the moisture content of a green bark averaged $39\%$, it is estimated that the production of 1kg in dry bark requires at least 6kg of top branch in lacquer tree.