Complex sentence: The stay-warm function can typically keep rice warm for up to 24 hours at a temperature high enough to suppress growth of "Bacillus cereus", a cause of food poisoning.
Split into simpler sentences: The stay-warm function can typically keep rice warm for up to 24 hours. This not only keeps the rice at the desired temperature but also have benefit of suppressing growth of "Bacillus cereus" that is a cause of food poisoning.