Results 271 to 280 of about 90,125 (307)
Some of the next articles are maybe not open access.
Acid scavengers for polyolefins
1998The transformation of a polyolefin material on its way from the reactor fluff to the finished article usually comprises several steps including processing operations at elevated temperatures. During these steps the polymer material suffers from various degradation processes caused by the combined influence of heat, shear and oxygen, which can ...
openaire +1 more source
The Oxyradical-Scavenging Activity of Azelaic Acid in Biological Systems
Free Radical Research Communications, 1991We have previously shown that azelaic acid, a C9 dicarboxylic acid, as disodium salt (C(9)2Na) is capable of inhibiting significantly the hydroxylation of aromatic compounds and the peroxidation of arachidonic acid due to reactive hydroxyl radicals (HO.).
S, Passi +5 more
openaire +2 more sources
Organic acids influence on DPPH scavenging by ascorbic acid
Food Chemistry, 2008The 2,2-diphenyl-1-picrylhydrazyl (DPPH·) test is largely used in plant or food biochemistry to evaluate the free radical scavenging effect of specific compounds or extracts. In its radical form, DPPH· has a broad absorption band in the visible region at 517 nm, while if it is protonated by an antiradical compound, it loses this property.
openaire +1 more source
Scavenging of chlorpromazine cation radical by ascorbic acid or glutathione
Journal of Free Radicals in Biology & Medicine, 1986The report presented here demonstrates that scavenging of chlorpromazine cation radical (an absorption maximum = 530 nm) by ascorbic acid or glutathione can be kinetically and stoichiometrically analyzed at pH 1.5 but not at pH 3.0 and 6.0 using a conventional absorption spectrophotometer.
M, Bando, H, Obazawa, T, Tanikawa
openaire +2 more sources
Determination of peroxy radical-scavenging of lactic acid bacteria
International Journal of Food Microbiology, 2001Responses of lactic acid bacteria (LAB) to peroxy radicals generated via thermal (40 degrees C) decomposition of the diazocompound 2,2,-azo-bis (2-amidinopropane) dihydrochloride (ABAP), were studied. In general, LAB displayed survival curves with shoulders and tails indicative of 'multihit' killing by exposure to peroxy radicals.
STECCHINI, Mara Lucia +2 more
openaire +3 more sources
Tabun scavengers based on hydroxamic acid containing cyclodextrins
Chemical Communications, 2013Arrangement of several hydroxamic acid-derived substituents along the cavity of a cyclodextrin ring leads to compounds that detoxify tabun in TRIS-HCl buffer at physiological pH and 37.0 °C with half-times as low as 3 min.
Florian, Brandhuber +7 more
openaire +2 more sources
Scavenging Activity of Azelaic Acid on Hydroxyl Radicals in Vitro
Free Radical Research Communications, 1991Azelaic acid is an aliphatic dicarboxylic acid (HOOC-(CH2)7-COOH) which has recently been shown to have some practical therapeutic applications in skin diseases of different etiologies. It possesses diverse biological activities and its mechanisms of action are still under investigation.
S, Passi +4 more
openaire +2 more sources
Efficient Scavenging of Fatty Acid Oxidation Products by Aminoguanidine
Chemical Research in Toxicology, 1997Lipid oxidation leads to the formation of reactive aldehydes that may play an important role in atherogenesis by altering the normal pathway of lipoprotein metabolism and by exerting toxic effects on vascular wall components. Recent studies indicate that advanced glycation end products, which form spontaneously from the reaction of reducing sugars with
Y, Al-Abed, R, Bucala
openaire +2 more sources
Inhibition of mutagenesis by p-aminobenzoic acid as a nitrite scavenger
Mutation Research Letters, 1992Nitrite treatment enhances the direct-acting mutagenicity of various foodstuffs (e.g., chicken, bloater, the soybean flour 'kinako', and Ban-Ban-Chi sauce) on Salmonella typhimurium TA100. p-Aminobenzoic acid (PABA) and glutathione (GSH) reduced this mutagenicity; on the other hand, thioproline (TPRO) increased it.
Y, Kako +5 more
openaire +2 more sources