We use our hands to do various things every day, so hands are most likely to be contaminated with bacteria. Studies have shown that there are a lot of bacteria on human hands. Some people do not wash their hands before eating after doing things, which can easily cause gastrointestinal diseases. The correct way is to use sterilizable items to wash your hands, and then it is safe to eat. So can soapy water remove bacteria? Ordinary people, if they have the conditions, can use hand washing products such as soap and hand sanitizer appropriately; if they do not have the conditions, they should also rinse with running water. Because the most common bacteria on hands are Staphylococcus and Escherichia coli, which can easily cause digestive tract infections, respiratory tract infections and skin infections. On the one hand, washing hands can clean away the dust and dirt visible to the naked eye, and on the other hand, it can also remove pathogenic microorganisms that are invisible to the naked eye as much as possible. Just washing your hands can effectively reduce the infection rate of intestinal diseases and respiratory diseases, and prevent the occurrence of diseases to a certain extent. The time for hand washing is very critical. The total time for each hand washing should be controlled within more than 15 seconds, and around 20 seconds is best. Because only within this time limit can a good cleaning effect be achieved. Soap can be regarded as the ancestor of washing products. It is economical, affordable and safe to use. The ingredients of ordinary soap are relatively simple, which is the salts of higher fatty acids or mixed fatty acids. The potassium and sodium salts of fatty acids have strong cleansing and bactericidal effects when dissolved in water. The U.S. Food and Drug Administration (FDA) has long recognized soap as the best hand-washing product, pointing out that washing hands with running water and soap can completely prevent the spread of disease without the need to use other products. Generally speaking, the bodies of bacteria, fungi, and viruses are made up of proteins. When proteins encounter alkaline substances, they will mutate and coagulate together. Therefore, alkaline detergents such as soap have bactericidal functions. However, in order to reduce the damage to human skin, most of the current shampoos and shower gels use neutral or slightly acidic ingredients. Therefore, they cannot effectively kill bacteria, and bacteria can survive unless other antibacterial ingredients are added. Generally speaking, viruses have poor adaptability to the environment and can only survive in specific environments! |
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