How long can raw corn be stored at room temperature

Raw corn can generally be stored for 1 to 2 days at room temperature, but the actual storage time is affected by factors such as temperature, humidity, corn maturity, ventilation conditions, and whether it has skin. Fresh corn with skin can be stored for about 48 hours in a dry and ventilated environment below 25 degrees Celsius. The outer bracts of corn can reduce water loss and block the invasion of some microorganisms. If the epidermis is intact and undamaged, and the environmental humidity is moderate, the starch conversion rate will be slower. High temperature and high humidity environments can accelerate the fermentation of corn sugar, causing a sticky or sour taste on the surface. At this time, it is necessary to consume it as soon as possible or transfer it to a refrigerated environment. Unpeeled corn should be avoided from stacking and stored, and maintaining ventilation can delay spoilage. Raw corn that has been peeled can only be stored for about 12 hours at room temperature. Corn kernels that have lost their outer layer of protection are directly exposed to the air, causing water evaporation and hardening of the taste, while also being more susceptible to mold contamination. If there is stickiness or odor at the incision site, it indicates that a large number of microorganisms have grown. It is recommended to handle it within 3 hours during the high temperature season in summer. It can be blanched and frozen to extend the shelf life. Choose corn with plump grains and moist roots when purchasing, which can extend the storage time at room temperature appropriately.

It is recommended to pack raw corn in a breathable bag and place it in a cool place to avoid direct sunlight. If long-term storage is required, boil for 3 minutes, drain and freeze, which can last for about 3 months. Before consumption, observe whether the corn whiskers turn black, whether the pressed particles leak water, and if there is a smell of alcohol or mold, discard immediately. Corn is rich in vitamin B and dietary fiber, and reasonable storage can maximize the retention of nutritional value.