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最近,国家有关卫生部门对普通家庭冰箱内部的卫生状况进行了抽样调查,结果令人担忧。其中,冰箱冷冻室细菌总数合格率为14.29%,大肠菌群合格率73.21%,而冷藏室细菌总数几乎都不合格。大家知道,一般的食品中都含有一定量的微生物,冰箱保存食品的基本原理是通过降低温度来抑制引起食物腐烂的微生物的繁殖。因而,冰箱只能相对延长食品的保存期而并非绝对停止微生物的活动。引起食物腐烂的大部分细菌的适宜生长温度为37℃左右,冰箱冷藏室的温度一般低于10℃,虽然微生物生长缓慢,但食物在冷藏室放置的时间一长,同样会变质腐坏。在自然界中,有一些细菌为嗜冷细菌,如李斯特氏菌等,能在4℃左右环境下生长繁殖,是致病菌,人们如果食用了这类微生物污
Recently, the relevant state health authorities conducted a sample survey on the health status of ordinary domestic refrigerators, and the results are alarming. Among them, the total number of freezer bacteria in the refrigerator pass rate of 14.29%, coliform passing rate of 73.21%, while the total number of bacteria in the freezer almost failed. We all know that the general food contains a certain amount of microorganisms, the basic principle of the refrigerator to save food by reducing the temperature to inhibit the proliferation of microorganisms that cause food decay. Therefore, the refrigerator can only extend the shelf life of the food rather than stop the activity of the microorganism absolutely. Most of the bacteria causing food rot have a suitable growth temperature of about 37 ° C. The temperature of the refrigerator freezer is generally lower than 10 ° C. Although the microorganisms grow slowly, the food stays in the freezer for a long time and is also spoiled. In nature, some bacteria are psychrophilic bacteria, such as Listeria, etc., can grow and reproduce at about 4 ℃ environment, is a pathogenic bacteria, people who eat such microbial contaminated