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  Sodium Acid Pyrophosphate   (SAPP, E450(i), Na₂H₂P₂O₇) is a widely used food-grade phosphate additive. As a professional SAPP manufacturer, Chongqing Chuandong Chemical Group produces high-purity sodium acid pyrophosphate that meets varis standards. 　　SAPP is a white crystalline powder with stable acidity, excellent water solubility and strong metal chelating ability. It acts as a leavening agent, pH regulator, moisture retention agent and stabilizer in food processing. This guide from the manufacturer sorts out its main applications in the food industry. 　　1. Leavening Agent for Baked Goods 　　SAPP is an essential leavening acid for commercial baking. It reacts with sodium bicarbonate to release carbon dioxide steadily, improving product texture and volume. Different reaction grades (SAPP 15/28/40) meet diverse production demands. 　　- Cakes, muffins and biscuits: Ensure uniform expansion and tender crumb structure. 　　- Doughnuts and fried pastries: Provide fast aeration for ...

       Sodium Tripolyphosphate, commonly abbreviated as STPP, is a versatile inorganic phosphate widely used in the food industry. As a professional   STPP manufacturer , Chongqing Chuandong Chemical Group have rich experience in producing food-grade STPP that meets global food safety standards. This high-quality additive plays multiple critical roles in food processing, helping to optimize product quality, extend shelf life, and improve processing efficiency. For food manufacturers, understanding the specific functions of STPP is essential to maximizing its value in production. Drawing on our years of production and application experience, this article details the core functions of STPP in food, providing professional insights for food processing enterprises and related practitioners. 　　1. Water Retention: Maintain Moisture and Improve Product Tenderness 　　One of the most important functions of STPP in food is its excellent water retention capacity, which...