Additives required for food processing—food moisture-retaining agents

　　Moisture is an essential component of food; both before and after processing, foods require an appropriate level of moisture. Controlling the water content and its physical state in the final product is crucial for ensuring food quality. Water‑holding agents serve this purpose; they are classified as Category 15 among food additives and comprise ten distinct types, all of which are phosphates. Phosphates, much like a family of ten siblings, are often used in combination, and with only a few exceptions, their prices are generally similar.

　　Meat and fish processing requires maintaining moisture to ensure product cohesion—specifically, the ability of meat pieces to adhere to one another. Generally, meat products with “good adhesion” or “strong bonding” also exhibit superior water-holding capacity and shelf life.

　　In traditional processing, a “warm‑with‑salt” method is employed. This approach involves immediately salting the hot meat right after slaughter. Compared with conventionally cured meats and those cured without salt, such meat exhibits markedly improved water‑holding capacity. In modern meat‑product processing, the addition of phosphates to various types of raw meat—whether or not the meat is freshly slaughtered and still warm—produces the same “warm‑with‑salt” effect.

　　The mechanisms by which phosphates exert their water‑holding effects remain incompletely understood. Phosphates are known to enhance the hydrophilicity of muscle proteins and to improve the binding properties of thermally processed meat (and fish) products. Consequently, phosphates serve as effective water‑retaining agents and can be widely employed in meat products.

　　Nantong Rongheng Food Additives Co., Ltd. welcomes your inquiry.