Enhancing the ascorbateglutathione cycle reduced fermentation by increasing NAD+ levels during broccoli head storage under controlled atmosphere ScienceDirect Selenium nanoparticles and glutathione synergistically enhance soybean salt tolerance by activating the JA pathway and arbutin mediated rhizosphere microbiota EurekAlert! science DrinkAid TJ. Glutathione peroxidase is an important enzyme in cellular antioxidant defense systems, detoxifying peroxides and hydroperoxides. As a component of the glutathione cycle, it protects the liver from reactive oxygen metabolites. Selenocysteine Methylglyoxal Detoxification Revisited: Role of Glutathione Transferase in Model Cyanobacterium Synechocystis sp. Strain PCC 6803 mBio