The main ingredient in the rice that is often eaten is starch, which is hydrolyzed into dextrin and maltose by salivary amylase in the mouth. After entering the small intestine through the stomach, it is decomposed into glucose and then absorbed by the intestinal mucosa. When the starch is heated above 6℃, it will gradually expand and eventually become paste. This process is called "gelatinization".

digestive enzymes in human body can easily hydrolyze this gelatinized starch molecule. The gelatinized starch will be "aged" after cooling. If the aged starch molecules are reheated, even if the temperature is very high, it is impossible to return to the molecular structure when gelatinized. The human body's ability to hydrolyze and digest this aged starch is greatly reduced.

Therefore, eating this reheated leftovers for a long time is prone to indigestion and even stomach trouble. It is best not to eat or eat less rice that has been cooled and reheated.

/iknow-pic.cdn.bcebos.com/e4dde7119ef76c655fd45729316fdfaaf5167b8"target="_blank"title=""class="ikqb_img_alink"> /iknow-pic.cdn.bcebos.com/e4dde7119ef76c655fd45729316fdfaaf5167b8? X-BCE-process = image% 2fresize% 2cm _ lfit% 2cw _ 6% 2ch _ 8% 2climit _ 1% 2fquality% 2cq _ 85% 2fformat% 2cf _ auto "esrc ="/n/215/68/c8611. People's Daily Online-Eating leftovers for a long time is harmful to the stomach. What should I do to protect the stomach?

/health.people.com.cn/n/215/11/C21471-2768463-2.html "target =" _ blank "title =" People's Daily Online-Leftovers can reduce cancer by four points. People's Network-Leftovers can cause cancer, so as to reduce the harm of eating leftovers at four points.