The present invention relates to a food additive,, and more particularly to a food additive that provides antimicrobial properties, and extends shelf life while maintaining the flavor profile of the foodstuff. The food additive may include 10 to 50% by weight grapefruit and/or grapefruit seed extract, 20 to 50% by weight citrus fruit extract, and 5 to 20% by weight of one or more flavorants selected from the group consisting of cacao, pomegranate, hops, curry, coriander, nutmeg, lovage, fenugreek, olive, onion, garlic, oregano, cinnamon, rosemary, thyme, tarragon, lemon grass, cumin, and anise.