Free iron typically leads to the formation of excess free radicals, and additional iron deposition in the liver contributes to the oxidative pathologic processes of liver disease. Many pharmacological properties of the insectivorous plant Drosera burmannii Vahl. have been reported in previous studies; however, there is no evidence of its antioxidant or hepatoprotective potential against iron ov...

The elements La, Y, Pr, Nd, Sm and Ce form with MgII and operating conditions for magnesium: wavelength, 285.2 nm; slit purpurin (1,2,4-trihydroxyanthraquinone) mixed-metal width, 0.7 nm; and lamp current, 9 mA.The air-to-acetylene complexes which can be extracted into isobutyl methyl ketone ratio and the burner position were adjusted for maximun at pH 7.5. The total content of these metals can...

Madder (Rubia tinctorum L.) has been used as a dye for over 2000 years with alizarin and purpurin the major natural dyes analysed from extractions undertaken. The use of ethanol as the solvent in the extraction process produced an extract that yielded four anthraquinone compounds lucidin primeveroside, ruberythric acid, alizarin and lucidin-ω-ethyl ether. Gravitational separation of the extract...

Phytochrome, the photomorphogenetic reaction center pigment of green plants and some algae, has been proposed recently to contain two chemically different chromophores in its P, and P,, forms, respectively (Grombein et al., 1975). P, contains an A-dihydrobilin chromophore (1) closely related to that of phycocyanin. For P,,, a violin (2) (or possibly purpurin) (Scheer et al., 1976) type chromoph...