Dietary food supplements and beverage supplements for human beings and animals, including pets, companion animals and hobby animals, containing natural antioxidants derived from microalgae; Microalgal solids or extracts containing astaxanthin for use as a nutritional supplement; Antioxidants containing astaxanthin for use in manufacture of a wide variety of goods including beverages, food products and food supplements; Food and beverage additives containing astaxanthin for the food and beverage industry; Food and beverage colorant containing astaxanthin for the food and beverage industry; Astaxanthin, and solids, crystals, emulsions, and oleoresins containing astaxanthin, in the nature of plant or microalgae extracts or unextracted solids (pastes, suspensions, powders, flakes) used in the manufacture of food, beverages, snacks, and dietary supplements