One of the primary functions of sodium benzoate is its ability to inhibit the growth of bacteria, yeast, and fungi. This antimicrobial property is particularly effective in acidic conditions, where it acts to disrupt the cell membranes of these microorganisms, leading to their death or growth inhibition. Thus, sodium benzoate is commonly added to products with a low pH, such as carbonated beverages, fruit juices, pickles, and salad dressings. By preventing spoilage, sodium benzoate helps to extend the shelf life of these products without the need for refrigeration, making it a practical solution for food manufacturers.
Another common emulsifier is mono- and diglycerides, which are derived from glycerol and fatty acids. These emulsifiers are often found in baked goods, margarine, and ice cream. Their ability to reduce surface tension between oil and water components makes them effective in preventing separation and enhancing the overall texture of food products. Mono- and diglycerides are also valued for their functionality in extending the shelf life of various items, making them popular in mass-produced foods.
One of the primary uses of soy lecithin is in the food industry. It acts as a stabilizing agent in products like chocolates, margarine, dressings, and baked goods. For instance, chocolate often contains soy lecithin to maintain its smooth texture and prevent the cocoa solids from separating. In baked goods, it enhances the dough's homogeneity and moisture retention, leading to improved texture and extended freshness. Additionally, soy lecithin can be found in salad dressings, where it serves to keep oils and vinegar from separating, ensuring the product remains appealing and easy to use.
Role in Cosmetics