sodium benzoate and potassium sorbate

Emulsification is the process of mixing two immiscible liquids, typically oil and water, to form a stable blend known as an emulsion. Emulsions are prevalent in many food products, including salad dressings, sauces, and mayonnaise. The stability of these emulsions is paramount because it affects both the texture and shelf-life of the product. Effective emulsifiers are required to reduce the surface tension between the oil and water phases, thereby promoting a stable, homogeneous mixture.

Pharmaceutical Applications

As a food additive, potassium sorbate is used as a preservative in concentrations of 0.025–0.100%,which in a 100 g serving yields an intake of 25–100 mg. In the United States, no more than 0.1% is allowed in fruit butters, jellies, preserves, and related products.Up to 0.4% has been studied in low-salt, naturally-fermented pickles, and when combined with calcium chloride, 0.2% made good quality pickles.Potassium sorbate has about 74% of sorbic acid's anti-microbial activity.When calculated as sorbic acid, 0.3% is allowed in cold pack cheese food. The upper pH limit for effectiveness is 6.5.

However, consumer awareness and demand for clean label products have led to debates concerning the use of synthetic preservatives in food. Many consumers prefer products that are free from artificial additives, pushing manufacturers to explore natural alternatives. This shift in consumer preference reflects a growing trend towards healthier, more transparent food choices.

Additionally, emulsifiers contribute to the economic aspect of food production. By improving product stability, manufacturers can reduce waste and spoilage, ultimately leading to more efficient production processes. This becomes particularly relevant in large-scale food manufacturing, where cost control is paramount.

Potassium sorbate has a wide variety of uses. This mild preservative has been valued for decades for its antimicrobial properties, and is an especially effective food preservative found in dehydrated meats, dairy products, and pastries. It’s especially common in dried fruit and is also often used to help preserve wine.