Superoxide radical scavenging activity

Blazso, G., Gabor, M., Sibbel, R., and Rohdewald, P., Antiinflammatory and superoxide radical scavenging activities of procyanidins containing extract from the bark oi Pinus pinaster Sol. and its fractions, Pharm. Pharmacol, 3, 217-220,1994. 

Chun OK, Kim DO, Lee CY (2003) Superoxide radical scavenging activity of the major polyphenols in fresh plums. J Agric Food Chem 51 8067-8072... 

Yasuhisa T, Hideki H, Muneyoshi Y (1993) Superoxide radical scavenging activity of phenolic compounds. IntJ Biochem 25 491-494... 

Fig. 3. a) First order plot of oxygen uptake in the Methylene-blue (MB)-sensitized photooxidation of GA 8.4 pM and 1.3 mM histidine (control) in phosphate buffer pH 7. b) Percentage radical scavenging activity for the control molecule Trolox and GA at pH 7.4 in phosphate buffer 10 mM (hydroxyl radical) and pH 10 in sodium carbonate buffer 50 mM (anion superoxide radical). 

Selenoureas are prepared by reaction of isoselenocyanates with amines, or by reaction of carbodiimides with a mixture of LiAlH4/Se and by reaction of cyanamides with LiAlH4/Se.267 272 The tyrosinase inhibitory activity and superoxide radical scavenger effect of selenoamides and selenoureas have been investigated (Scheme 84).273 275... 

The 3-morpholinosydnonimine system generates superoxide radicals and nitrogen monoxide, forming peroxynitrite, which releases ethane from KMB (a-keto-y-methiolbutyric acid). This method was used by Lavelli and others (1999) to investigate the radical-scavenging activity of fresh and air-dried tomatoes. 

Noda Y, Anzai K, Mori A, Kohno M, Shinmei M and Packer L. 1997. Hydroxyl, end superoxide anion radical scavenging activities of natural source antioxidants using the computerized JES-FR30 ESR spectrometer system. Biochem Mol Biol Int 42(1) 35—44. 

Germacrene-D, a ten-membered-ring system with three double bonds acting as electron-rich centers, and pinenes and menthadiene oiXylopia aethiopica EO showed a significant ability to scavenge superoxide anion radical [176]. EOs with /f-caryophyllene as the major compound showed radical-scavenging activity [177]. 

Chlorogenic and caffeic acids inhibit the activation of hyaluronidase, which is known as one of the enzymes involved in allergic effects [79], migration of cancer cells [80], inflammation [81, 82], and increased permeability of the vascular system. The superoxide anion radical scavenging activity of chlorogenic acids correlates linearly to the hyaluronidase-inhibitory activity. (3-Hexosaminidase release from rat basophilic leukemia cells induced by antigen has been inhibited by chlorogenic and caffeic acids. These compounds do not inhibit 13-hexosaminidase activity itself. 

Liu and Ng (2000) studied the antioxidative and superoxide- and hydroxyl-radical-scavenging activities and pro-oxidant effect of 12 selected medicinal herbs. The aqueous extracts of Coplis... 

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