Can blueberries still be eaten after being refrigerated for 20 days

Blueberries can usually be consumed if they do not spoil after being refrigerated for 20 days. The refrigeration storage period for fresh blueberries is generally 7-14 days, and the actual edibility depends on the storage conditions, fruit maturity, and packaging method. Whether blueberries can be consumed after being refrigerated for 20 days requires observation of changes in appearance and odor. It is not edible when there are obvious mold spots, exudation, or wrinkles on the surface of the fruit. If blueberries are fully ripe or have poor packaging sealing before refrigeration, the rate of spoilage will accelerate. Fluctuations in refrigeration temperature or humid storage environments can also accelerate the growth of mold. After being refrigerated for 20 days, some blueberries may only have slight wrinkles on the skin but not mold, and these fruits can still be used to make jam or baked goods after removing the skin. Blueberries stored in vacuum sealed or fresh-keeping boxes may have an extended shelf life under constant low temperature conditions. Commercial pre packaged blueberries may have a slightly longer shelf life than bulk products due to air conditioning treatment.

It is recommended to carefully check the condition of blueberries before consumption, and fruits that have slightly softened should be prioritized for heating and cooking. Daily storage of blueberries should be kept at a stable refrigeration temperature of 0-4 degrees Celsius, and moisture-proof pads can be retained to absorb moisture when the original packaging is unopened. After cleaning, blueberries should be thoroughly dried before refrigeration to prevent residual moisture from accelerating spoilage. If individual moldy fruits are found, the whole box should be discarded to prevent mold spores from contaminating other fruits.