Substances added to foodstuffs to maintain a uniform dispersion of ingredients are crucial for product quality and shelf life. These additives prevent separation, settling, or other undesirable physical changes that can occur during storage or processing. Common examples include ingredients that prevent oil and water from separating in salad dressings, maintain the suspension of cocoa particles in chocolate milk, or inhibit ice crystal growth in frozen desserts.
Their incorporation in food formulations offers several advantages. They contribute to a consistent texture, appealing appearance, and enhanced palatability, factors that influence consumer acceptance. Historically, techniques such as fermentation and the addition of salt were utilized to extend shelf life. Modern food production relies on a wider range of these ingredients, selected for their specific functional properties and ability to meet regulatory requirements.