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一位读者来信说:她听说广东人胃癌发病率低,与不吃隔夜蔬菜的习惯有关。于是许多家庭都开始担心:前一天的剩菜,难道第二天热热再吃会致癌吗?其实这并不是隔夜不隔夜的问题,而是蔬菜在烹调后存放的时间长短问题。如果早上做菜晚上才食用,隔的时间并不比一夜短。许多消费者已经知道,由于施肥的缘故,蔬菜中往往含有较多的硝酸盐。硝酸盐本身并无毒性,但它会转变为致癌的亚
A reader wrote in a letter: She has heard that Guangdong has a low incidence of gastric cancer, which is related to the habit of not eating overnight vegetables. So many families are beginning to worry about: the day before the leftovers, is it hot the next day will cause cancer? In fact, this is not overnight overnight problem, but the storage of vegetables in the cooking time length of the problem. If it is consumed in the morning and cooked at night, the interval will not be shorter than overnight. Many consumers already know that vegetables often contain more nitrates due to fertilization. Nitrate itself is not toxic, but it can turn into carcinogenic sub-forms