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?大多数加工食品如果不按规定加入适量的食品添加剂，甚至无法生产，如汽水、巧克力等，而且很容易霉变和变质，如干酪不用防腐剂，外表会产生有害于人体健康的霉菌；食用变质的食品后，轻则引起腹泻、中毒，重则有可能引起癌变。
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