河粉放到冰箱里面保存，最多只能存放1天左右的时间，要是超过了，会导致它全部都粘到一起，还会变硬，影响食用口感。另外，生河粉和熟河粉要分开进行保存，以免互相作用而变质，且在保存的时候也不要让河粉沾水。
河粉是我们生活中比较常见的一种粉类食物，口感Q弹，营养丰富，不管是煮着吃还是炒着吃味道都非常不错，不过有时候我们将河粉买回来会发现不小心买太多了，一下子吃不完，但是有担心浪费，这个时候就需要将它放到冰箱里面保存了。
一般来说，将河粉放到冰箱里面，最多只能放一天左右的时候，否则就会出现变硬，全部粘在一起的情况，影响食用口感。在将河粉放到冰箱保存的时候，最好也要用碗装着河粉，然后再放到冰箱冷藏室里面。
另外需要注意的是，熟的河粉和生的河粉要分开进行保存，以免互相作用从而出现变质的情况，且在保存河粉的时候也最好不要让它沾水，将手上水分擦干了之后再接触河粉会更好一些。
科普小知识——哪些食物不能长时间放置后食用
在前段时间，发生了一起鸡西酸汤子中毒事件，引起广大群众关注，经过医院分析确定，应该是酸汤子长时间放置产生的米酵菌酸引起的中毒事件。短短几天中毒9人就死去8人，据唯一幸存者透露，酸汤子是自己目前做的，但却把这个东西从冰箱中拿出来放在潮湿的地方放置了很久，很久。而就这两天，最后一位幸存者也不幸去世。
食品安全问题其实一直存在，应该会发生各种处理不当导致的食物中毒事件，而酸汤子中毒事件，无疑又为我们敲响了一次警钟。所以我们需了解哪些食物会含有这类毒素，以及什么情况下，会产生这种类似毒素。
1、臭碴子、酸汤子、吊浆粑、发酵工艺的汤圆等发酵面米食品风险性很大。
2、不新鲜的粿条、湿河粉、湿米粉、肠粉等，超过48小时就不要食用了。
3、长时间泡发的银耳、黑木耳等，本身并不产生米酵菌酸毒素，但泡发环境很容易受到污染，要现泡现吃，泡发超过24小时的尽量不要食用。
4、自制的酒类，自制的酒类，要遵循合格的生产工艺，避免杂菌污染，出现酸味，大量泡沫后不要饮用。
5、潮湿环境下，受潮、发霉的米面，极易产生米酵菌酸毒素，无论加工成烙饼，面条、汤圆等都不能食用。
总而言之，对于日常饮食不可掉以轻心，尽量食用安全、新鲜食物，安全第一位！
Popular science knowledge
Some time ago, a Jixi acid soup poisoning incident occurred, which attracted the attention of the general public. After the analysis of the hospital, it was determined that it should be a poisoning incident caused by the rice yeast acid produced by the acid soup for a long time. In just a few days, 9 people were poisoned and 8 people died. According to the only survivor, the sour soup was made by myself, but I took this thing out of the refrigerator and placed it in a humid place for a long time. In these two days, the last survivor passed away unfortunately.
Food safety problems have always existed, and there should be various food poisoning incidents caused by improper handling, and the sour soup poisoning incident has undoubtedly sounded another alarm for us. So we need to understand which foods contain this toxin, and under what circumstances, this similar toxin will be produced.
1. Fermented noodle foods such as smelly ballast, sour soup, hanging pulp, and fermented glutinous rice balls are very risky.
2. Do not eat stale Kuey Teow, wet rice noodles, wet rice noodles, rice noodles, etc. for more than 48 hours.
3. Tremella, black fungus, etc. that have been soaked for a long time do not produce rice yeast acid toxins, but the soaking environment is easily contaminated. You should soak them and eat them now. Try not to eat them if they are soaked for more than 24 hours.
4. Homemade alcoholic beverages, homemade alcoholic beverages, must follow qualified production techniques to avoid bacterial contamination, sour taste, and do not drink after a lot of foam.
5. In a humid environment, damp, moldy rice noodles are prone to produce rice yeast acid toxins. No matter they are processed into pancakes, noodles, glutinous rice balls, etc. cannot be eaten.
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