Recently, a great deal of interest has been developed to isolate novel bioactive compounds from marine resources because of their numerous health beneficial effects. Among marine resources, marine algae are valuable sources of structurally diverse bioactive compounds with potential to be used against artificial food ingredients. This mini-review focuses on seaweed-derived bioactive compounds such as phlorotannins, sulfated polysaccharides, carotenoid pigments, and fucosterol with their potential antioxidant effect in the food industry as functional ingredients.