Experts say that such “rotten fruit" caused by microbial invasion. The fruit should throw away immediately and never eat the non-rotten part. Fruit after prolonged storage usually suffer microbial invasion, in which the most frequent is Penicillium. After metabolism it produces penicillin, this substance can cause the human gastrointestinal disorders, kidney edema and other diseases. Penicillium and binding process is irreversible cell membrane, it will cause long-term damage to the cell and may even be carcinogenic. When fruit is partially moldy, it may not be safe if only removal the mold parts to eat because penicillin has spread to other parts of the fruit. So even if it looks normal flesh, it still has contained a lot of harmful substances, and unfit for human consumption.

In addition to the damage caused by microorganisms, fruit also occur bumps and frostbite easily. After bruised flesh becomes soft and its color deepened which is due to cell damage occurs. The material within the cell due to the occurrence of enzymatic browning, but it does not produce harmful substances. Therefore, in this case does not affect healthy eating. However, due to the bruised fruit nutrients exposed for microbial growth provides a good condition, so it is sure to eat right away or it will be very easy to be invaded Penicillium. Similarly, Hypothermia can also cause some fruit cell membrane damage, although frostbite fruit taste and appearance is poorer, but still edible.

Source: NTD