Food preservatives are used to maintain freshness and quality of food. However, you still need to be vigilant because there are certain types of food preservatives that are harmful to the body. Food preservation is carried out as an effort to inhibit or prevent decomposition, acidification, fermentation, and other damage to food caused by bacteria, fungi, and microbes. Food Preservation Process The process of food preservation is generally carried out by two methods. First is traditional methods, such as drying, cooling, and fermentation. And the second is modern methods, such as canning, pasteurization, freezing, food irradiation and chemical additives. Food preservative chemicals used in the process, some are safe for consumption and some are harmful to health, for example formalin and borax. Both of these harmful ingredients are often used to preserve tofu, noodles, and meatballs. If consumed in the long term, can cause heart problems, respiratory system, kidney, skin, and e