(记者杨滨)北京市食品药品监督管理局今天通报，两种“超甜”食品不合格，即日起在全市流通领域采取停止销售措施。
这两种食品一种是标称湖南省笑笑食品有限公司生产的“聚满香”牌手撕牛板筋(调味面制品)，另一种是标称天津市天宇酱菜有限公司生产的“骉”牌水晶糖蒜。前者甜蜜素超标，后者糖精钠超标。
糖精钠(糖精)是一种甜味剂，甜度为蔗糖的300至500倍，但除了在味觉上引起甜的感觉外，对人体无任何营养价值。相反，当食用较多的糖精时，会影响肠胃消化酶的正常分泌，降低小肠的吸收能力，使食欲减退。
甜蜜素也是一种化学合成的食品添加剂，其甜度是蔗糖的30到40倍。添加甜蜜素除了有增强甜度、起到代糖的作用外，也没有任何营养作用，是厂家为了降低成本而添加的。
但如果经常食用甜蜜素含量超标的食品，就会因摄入过量对人体的肝脏和神经系统造成危害，特别是对代谢排毒能力较弱的老人、孕妇、小孩危害更明显。
市食药监局提醒：凡已购买上述不合格批次食品的消费者，可凭购物小票和食品外包装向销售单位要求退货。
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