Derivative (finance) In finance, a derivative is a contract that derives its value from the performance of an underlying entity. This underlying entity can be an asset, index, or interest rate, and is often simply called the underlying.
Examples. Preservatives are either natural or chemical. Examples of chemical preservatives include nitrates, sulfites, sodium benzoate, potassium sorbate, and propyl gallate. Common natural preservatives include salt, lemon juice (citric acid), vinegar (acetic acid), sugar, and certain spices.unction. Preservatives work in one of three ways. They can prevent growth of microorganisms by creating an environment hostile to them. They can block the process of oxidation that causes foods to turn rancid.
These are preservatives that are added to canned foods and processed foods in particular processed meat products such as bacon, corned beef, ham, hot dogs, lunch meats, and sausage, yeah the lovely sausage.hese are preservatives that are added to canned foods and processed foods in particular processed meat products such as bacon, corned beef, ham, hot dogs, lunch meats, and sausage, yeah the lovely sausage.