antioxidant
/ˌæntɪˈɒksɪdənt/noun
1- a substance that inhibits oxidation, especially one used to counteract the deterioration of stored food products（尤指防止储存食物变质的）防腐剂。
1.1
- a substance such as vitamin C or E that removes potentially damaging oxidizing agents in a living organism抗氧化剂（如维生素C或维生素E）。