Sodium benzoate appears as a white crystalline powder and is commonly recognized by its E number, E211, when used as a food additive. It functions as a preservative by inhibiting the growth of mold, yeast, and some bacteria, making it particularly valuable in acidic foods and drinks. Its effectiveness is most pronounced in products with a pH of 4.5 or below, which is why it is a staple in many carbonated beverages, fruit juices, and pickled foods.
Isopropyl alcohol’s chemical formula, C3H8O, denotes a simple compound with impressive properties. Its ability to dissolve a wide range of non-polar compounds makes it invaluable in industrial settings. Manufacturing processes often include isopropyl alcohol for extracting natural oils, fats, and other compounds, highlighting its versatility. In addition, its use as a dehydrating agent enables it to effectively remove moisture from surfaces, making it essential for ensuring the integrity of many products.
The use of preservatives in food dates back to ancient times when methods like salting, smoking, and drying were employed to prevent spoilage. However, with the advent of modern food processing, the need arose for chemical preservatives, one of which is potassium sorbate. Discovered in the 1850s, potassium sorbate was first synthesized as a means to prevent spoilage in food products, and its safety and effectiveness quickly made it a staple in the food industry.
Controversies and Public Perception
The Role of Preservatives in Curing Meat
A 2010 study published in “Toxicology in Vitro” found that exposure of human blood cells to potassium sorbate in the laboratory caused damage in DNA. But further study, including a long-term study on people, is still required. In addition to potentially causing harm to DNA, potassium sorbate may cause an allergic reaction when used externally, as it is sometimes used in skin lotions.
Conclusion