34444-18-3Relevant academic research and scientific papers
RADICAL CHROMATOGRAPHY OF SPIN ADDUCTS PRODUCED FROM γ-IRRADIATED LINOLEIC ACID IN NONAQUEOUS SOLUTION
Taniguchi, Hitoshi,Aoshima, Hitoshi
, p. 1599 - 1602 (1981)
Spin adducts produced from γ-irradiated linoleic acid in an ethanol solution containing 2-methyl-2-nitrosopropane could be separated into nine fractions with high performance liquid chromatography.Distinct ESR spectra were observed from seven fractions and radical structures were indentified for two major components.
Immobilized Catalyst for Detecting Chemiluminescence in Lipid Hydroperoxide
Wadano, Akira,Ikeda, Teturo,Matumoto, Motonobu,Himeno, Michio
, p. 1217 - 1223 (2007/10/02)
Both microperoxidase and cytochrome c could be immobilized on a gel for HPLC without losing their activity, the specificity of each immobilized catalyst being similar to that of the free catalyst.With up to 40percent of methanol, the chemiluminescence increased as the alcohol concentration increased, while the count decreased with more than 10percent methanol for the free cytochrome c.When used as the reactant for flow injection analysis, they do not need to occupy the cell for the emission of chemiluminescence.The immobilized reactant can measure from 400 pmol to 10 nmol of tert-butylhydroperoxide (t-BuOOH) without staining the emission cell.
Role of Oxygenated Fatty Acids in Rice Phytoalexin Production
Li, Wen Xin,Kodama, Osamu,Akatsuka, Tadami
, p. 1041 - 1047 (2007/10/02)
13-Hydroperoxides (ROOH) and 13-hydroxides (ROH) of both linoleic and linolenic acids rapidly increased after inoculating press-injured spots of rice leaves with Pyricularia oryzae.The highest concentrations of ROOH and ROH were reached within 24 hr after inoculating with P. oryzae.On the contrary, the production of momilactone A, a terpenoid rice phytoalexin, began 24 hr after inoculating with P. oryzae, while the momilactone A level peaked at 96 hr after the inoculation.The 13-hydroperoxides and 13-hydroxides of linoleic and linolenic acids can thus induce phytoalexins production.Quinacrine, an inhibitor of phospholipase A2, and the lipoxygenase inhibitor, nordihydroguairatic acid (NDGA), inhibited not only the production of ROOH and ROH, but also any phytoalexin accumulation following invasion by P. oryzae.Chlorogenic acid, by inhibiting the peroxidase of rice plants, inhibited the production of ROH and the rice phytoalexins accompanying an accumulation of ROOH.These data suggest that the oxygenated fatty acids, especially hydroxides of linoleic and linolenic acids, in blast-infected rice leaves possibly act as endogenous elicitors of phytoalexin production.
