High Correlation between Lipid Peroxide Radical and Tumor‐promoter Effect: Suppression of Tumor Promotion in the Epstein‐Barr Virus/B‐Lymphocyte System and Scavenging of Alkyl Peroxide Radicals by Various Vegetable Extracts

Abstract

We examined the ability of hot‐water extracts of 66 vegetables and plants to suppress tumor promotion, as well as to scavenge lipid peroxide radicals in vitro. To assess the effect against tumor promotion (transformation) in vitro, we used the phorbol myristate acetate/Epstein‐Barr virus/ B‐lymphocyte system. To assess the lipid radical‐scavenging effect, the luminol‐enhanced cliemi‐luminescence method using the tot‐butyl hydroperoxide/heme system was used, which generates more alkyl peroxide radical (ROO·) than alkyl (R·) and alkoxyl