Nitrite is a chemical compound that consists of one nitrogen atom and two oxygen atoms, represented by the formula NO2-. It is commonly found in nature and is often produced during the breakdown of organic matter. Nitrite plays a role in the nitrogen cycle, where it is formed from the oxidation of ammonia by bacteria. In addition to its natural occurrence, nitrite is used in various industrial applications, including food preservation. It helps prevent the growth of harmful bacteria in cured meats, giving them a distinct flavor and color. However, excessive consumption of nitrite can pose health risks, leading to concerns about its use in food products.