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Food Additives in China An Overview

When sodium bicarbonate is dissolved in water, it dissociates into sodium ions (Na⁺) and bicarbonate ions (HCO₃⁻). This solution exhibits a mild alkaline nature, with a pH typically ranging from 8 to 9. This characteristic makes sodium bicarbonate solution an effective buffer, capable of maintaining pH levels in various systems. The buffering action of bicarbonate is critical in biological systems, helping to stabilize the pH of blood and other bodily fluids.

Safety and Regulations

Sodium Acid Pyrophosphate is an inorganic compound with the formula Na2H2P2O7. It is a white powder that is soluble in water and has a slightly acidic nature. SAPP is a type of pyrophosphate, which means it consists of two phosphate groups linked together. In its role as a leavening agent, SAPP releases carbon dioxide when it reacts with moisture and alkaline compounds, such as baking soda, during the baking process. This gas formation helps dough to rise and contributes to the light, airy texture of baked goods.

E500 refers to a range of sodium carbonate compounds, including sodium carbonate (soda ash), sodium bicarbonate (baking soda), and their derivatives. These compounds are known for their alkalinity and are commonly used as leavening agents, acidity regulators, and stabilizers in various food products. Their primary role is to manipulate pH levels, which can significantly impact taste, texture, and the overall quality of food.

Sodium citrate also acts as a flavor enhancer. It can mask undesirable tastes and balance sourness in certain foods and beverages, making it popular in carbonated drinks, syrups, and pickled products. This functionality not only improves sensory quality but also optimizes the overall taste experience.

Importance of Quality Supply

One of the most common applications of E290 is in modified atmosphere packaging (MAP). This innovative technique replaces the air inside a package with a specific blend of gases, including carbon dioxide. By doing so, the growth of aerobic bacteria and fungi is slowed down, thereby extending the shelf life of the product. MAP is commonly used for fresh salads, cut fruits, and deli meats, allowing consumers to enjoy these products for longer without compromising their quality.