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“一看二闻”揪出变质食物

健康 来源:人民网-生命时报 2018年03月12日 09:02 A-A+ 二维码
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原标题:

  日常生活中,我们可以采用“一看二闻”的方法辨别食物有没有变质:一看,食物变质后,外观上往往会发生变化,比如颜色改变,失去光泽,出现霉斑、拉丝,固态食物的组织变软、变黏,液态食物出现浑浊、沉淀、表面浮膜等现象;二闻,变质的食物通常会产生各种令人不愉快的气味,比如肉类、鱼虾、蛋类等富含蛋白质的食物变质后会产生腐臭味,食用油及油脂含量高的食物变质后会产生“哈喇味”,粮食霉变后产生霉味。(北京大学公共卫生学院营养与食品卫生学系主任、教授马冠生)

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我要纠错编辑:邹杨 责任编辑:张福伟
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