Foodfortifier "means any natural or artificial food additive belonging to the category of natural nutrients that is put into food to increase its nutritive value."
营养强化剂：指为增强营养成分而加入食品中的天然的或者人工合成的属于天然营养素范围的食品添加剂。
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The article summarizes the reason of using fortifierfood, and introduces the category, the character and the physiology function of the food additive (nutriment).