Improvement of Peroxyl Radical Scavenging Bioassay Based on Bactericidal Action oftert-Butyl Peroxyl Radical

Autor: Shigenori Ueno, Masami Sato, Yoshihiro Tsuriya, Toshiyuki Kawasumi
Rok vydání: 1999
Předmět:
Zdroj: Bioscience, Biotechnology, and Biochemistry. 63:577-580
ISSN: 1347-6947
0916-8451
DOI: 10.1271/bbb.63.577
Popis: An improved bioassay for measurement of peroxyl radical scavenging activity(1,2)) is described. The modifications included the use of (1) Enterococcus faecium strain S, (2) 25% dimethyl sulfoxide, (3) L-ascorbic acid for the termination of the bactericidal reaction, and (4) the concentration of antioxidants that gives 75% of the log (colony forming unit/ml) of the control reaction (without methemoglobin or tert-butyl hydroperoxide), for the expression of antioxidant activity.
Databáze: OpenAIRE