The present invention relates to the technical field of additives or adjuncts, especially additives that have an antioxidant effect and antioxidants, for food products, animal feed, cosmetics, and pharmaceuticals. The present invention above all provides an improved antioxidant agent for food products, animal feed, cosmetics, and pharmaceuticals and also provides compositions that include this antioxidant agent as preferably the sole supplementary additive that has an antioxidant effect.