Does washing rice prevent bacteria from entering?
In short, no.
Rice washing does not affect the bacterial levels in the cooked rice, as high cooking temperatures kill any bacteria present.
Of greater concern is how long you can store uncooked or washed rice at room temperature.
Cooking rice does not kill the bacterial spores of a pathogen called Bacillus cereus.
When wet rice or cooked rice is stored at room temperature, the bacterial spores can become active and begin to grow.
These bacteria then produce a toxin that cannot be inactivated by boiling or heating; This toxin can cause serious gastrointestinal disorders.
Therefore, be careful not to keep washed or cooked rice at room temperature for too long.
