• Title/Summary/Keyword: epoxide

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The Effects of Fermented Anchovy on the Bromobenzene-Induced Hepatic Lipid Peroxidation in vitro (시험관내에서 멸치액젓이 Bromobenzene유발 간조직 지질과산화에 미치는 효과)

  • Park, Jong-Ok;Choi, Jong-Won;Kim, Hee-Sook;Ryu, Byung-Ho
    • Korean Journal of Food Science and Technology
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    • v.32 no.5
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    • pp.1179-1185
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    • 2000
  • Fermented anchovy was used to investigate its effects on the formation of lipid peroxide and the activities of epoxide or free radical generating enzyme in vitro in bromobenzene-treated rats. All solvent fractions from fermented anchovy not only showed the strong antioxidative activities on linoleic acid autooxidation, but also reduced bromobenzene-induced hepatic lipid peroxidation. The activities of aniline hydroxylase and aminopyrine N-demethylase elevated by bromobenzene were recovered to the level of normal rats by adding the solvent fractions of fermented anchovy. But, xanthine oxidase and aldehyde oxidase activities were not affected by fermented anchovy. These results suggest that reduction of the bromobenzene-induced hepatic lipid peroxidation is caused by inhibition on the epoxide formation, not on free radical generation.

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Halogenated Cleavage of Epoxides into Halohydrins in the Presence of a Series of Diamine Podands as Catalyst with Elemental Idoine and Bromine

  • Sharghi, Hashem;Paziraee, Zahra;Niknam, Khodabakhsh
    • Bulletin of the Korean Chemical Society
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    • v.23 no.11
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    • pp.1611-1615
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    • 2002
  • The ring opening of epoxides with elemental iodine and bromine in the presence of three diamine podands 7-9 as new catalysts affords vicinal iodo alcohols and bromo alcohols in high yields. This new procedure occurs regioselectively under neutral and mild conditions in various aprotic solvents even when sensitive functional groups are presented.

Synthesis of Cyclic Carbonates with Carbon Dioxude (이산화탄소를 이용한 고리형 카보네이트의 합성)

  • Lee, Yoon-Bae;Ma, Dong-Hwan;Yoo, Jin-Yi
    • Proceedings of the KAIS Fall Conference
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    • 2009.12a
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    • pp.1034-1037
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    • 2009
  • 지구온난화룰 일으키는 온실가스중 하나인 이산화탄소를 제거하기 위하여 여러 가지 Epoxide와 이산화탄소를 Tetrabutylammonium bromide를 촉매로 하여 고압(900-1600psi), 고온($90^{\circ}C$)에서 반응시켜 고리형 카보네이트를 합성하였다. 합성된 고리형카보네트의 구조는 는 H-NMR, GC=MS, FT-IR을 이용하여 확인하였다.

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Epoxidaion of Unsaturated Poly (3-hrdroxyalkanoate)s with m-Chloroperbenzoic Acid

  • Park, Won-Ho;Robert W. Lenz;Steve Goodwin
    • Proceedings of the Korean Fiber Society Conference
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    • 1998.04a
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    • pp.45-49
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    • 1998
  • The production of unsaturated poly(3-hydroxyalkanoate)s, PHAs, by Pseudomonas oleovorans has been studied extensively in this laboratory$\^$1-3/, and recently a procedure has been developed for the quantitative conversion of the unsaturated groups to epoxide groups$^4$.(omitted)

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Studies the Carotenoids in the Viscera of the Brine Schrimp(Penaeus Orientalis Kishinouye) (새우의 Carotenoid 성분에 관한 고찰)

  • Lee, In Kil
    • Journal of Environmental Health Sciences
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    • v.11 no.1
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    • pp.29-34
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    • 1985
  • The studies on the carotenoids in the viscera the brine shrimp(Penaeus Orientalis Kishinouye) have been carried out. The brine shrimps were caught around the western coastal area of Korea from Aug. to Oct. The individual carotenoids in the acetone extracts were separated and purified by the silica gel TLC. Two isolated carotenoids were investigated and identified by epoxide test, partition test, alkaline hydrolysis, reduction with sodium borohydride and visible absorption spectrophqtometry. As the results of the series of experiments, esterified Astaxanthin was discovered as one of main pigments of Penaeus Orientalis Kishinouye.

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Dimensional Stability of wool Fabrics Treated with Multifunctional Epoxide and Reactive Silicone Polymers

  • Moon, Su-Jin;Kang, Tae-Jin
    • Proceedings of the Korean Fiber Society Conference
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    • 1998.10a
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    • pp.207-210
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    • 1998
  • Among the common textile fibers, wool has excellent wrinkle recovery. However, absorbed moisture plasticizes the structure and increases the rate of stress relaxation during wear deformation. Therefore, the wrinkle recovery of wool deteriorates under very high-humidity conditions and is of particular concern in men's lightweight suits, where the trend is toward wool fabrics of lightweight and bright color in which the wrinkles are emphasized. (omitted)

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