Organic acid preservatives are compounds derived from natural sources that are used to inhibit the growth of microorganisms in food products. These preservatives work by lowering the pH of the food, creating an environment that is unfavorable for bacteria, yeasts, and molds, thus extending shelf life and enhancing food safety. Common examples include acetic acid, citric acid, and lactic acid, which are often added to various food items such as sauces, beverages, and dairy products.