Acidifiers refer to substances that can lower the pH levels of a solution or environment. In some cases, the term is used to describe food additives that help to preserve and improve the flavor of food by making it more acidic. Some common synonyms for acidifiers include acidity regulators, acidulants, souring agents, and pH adjusters. Acidulants are often used in the food and beverage industry to enhance the tartness or sourness of products like soft drinks, frozen desserts, and fruit juices. In agriculture, acidifiers like citric acid and acetic acid are used to prevent the growth of harmful bacteria in livestock feed and water, helping to maintain animal health and productivity.