1 In general, the total dissolved solids concentration is the sum of the cations (positively charged) and anions (negatively charged) ions in the water.  Parts per Million (ppm) is the weight-to-weight ratio of any ion to water.
If you refrigerate the rice, and you want to eat it cold, its perfectly fine. People eat cold rice salads all the time. Cold rice pudding is fine. Its just sitting around at room temperature that is the problem.
Report Abuse. It's true that you could get food poisoning from eating reheated rice. But it's not actually the reheating that's the problem â it's the way the rice has been stored before reheating. Uncooked rice can contain spores of Bacillus cereus, bacteria that can cause food poisoning.t's true that you could get food poisoning from eating reheated rice. But it's not actually the reheating that's the problem â it's the way the rice has been stored before reheating.