Overview
Sodium caseinate is a water-soluble derivative of casein, the primary protein in cow's milk. Produced through alkaline treatment of acid-precipitated casein, this functional ingredient serves as a high-performance emulsifier in food systems. Its amphiphilic nature allows it to stabilize oil-water interfaces, making it indispensable in homogenized and emulsified products. As a milk protein concentrate containing about 90% protein, sodium caseinate offers nutritional benefits alongside technical functionality. It's particularly valued in applications requiring heat stability, as it doesn't coagulate at high temperatures like undenatured proteins. The global market for sodium caseinate continues to grow with rising demand for clean-label protein ingredients.
Physical and Chemical Properties
Sodium caseinate forms colloidal solutions in water with pH-dependent viscosity. At neutral pH (6.5-7.0), it exhibits optimal solubility and emulsifying capacity. The protein's structure contains both hydrophilic (serine, threonine) and hydrophobic (valine, leucine) amino acids, enabling effective reduction of surface tension between immiscible phases. Unlike acid casein, the sodium salt form doesn't form gels upon heating but rather contributes to viscosity building. Its isoelectric point shifts to approximately pH 4.6 due to the introduction of sodium ions. The ingredient typically has a bulk density of 300-500 g/L and demonstrates excellent film-forming properties when dried.
Main Applications
In dairy analogs, sodium caseinate replicates the mouthfeel and whitening capacity of milk proteins in coffee whiteners and imitation cheeses. Processed meat manufacturers utilize its water-binding capacity to improve yields in sausages and deli meats, where it can replace phosphates in some formulations. The nutritional supplement industry employs sodium caseinate as a slow-digesting protein source in meal replacements and sports nutrition products. Its emulsification stability under acidic conditions makes it valuable in creamy salad dressings and dairy-based beverages. Emerging applications include plant-based meat alternatives where it improves texture and fat retention.
Safety and Storage
As a dairy derivative, sodium caseinate requires allergen labeling in most jurisdictions. While generally stable, prolonged exposure to high humidity can cause caking and microbial growth. Suppliers typically guarantee a microbiological specification of <10,000 CFU/g total plate count with absence of pathogens. Industrial users should implement dust control measures as powdered caseinate can form explosive mixtures in air (STP class A). The material is non-flammable but may emit toxic fumes (nitrogen oxides) under decomposition conditions above 200°C. Shelf life typically ranges 12-24 months when stored in original packaging below 25°C.
B2B Procurement Guide
Bulk buyers should specify protein content (typically 88-95%), fat content (<1.5%), and sodium levels (1.1-1.3%) in procurement contracts. Food-grade material should comply with FCC or E 469 standards, with documentation of heavy metal testing (lead <0.5 ppm, arsenic <0.1 ppm). Consider spray-dried rather than roller-dried variants for superior dispersibility. For halal/kosher markets, verify certification from accredited bodies. Container shipments require desiccant packets to prevent moisture absorption. Leading producing regions include EU, New Zealand, and USA, with pricing fluctuations tied to milk solid commodity markets.
Related Manufacturers
- 主营：酵母浸粉、甜菜碱、氯化胆碱、酪蛋白酸钠 酪朊酸钠、酪蛋白 干酪素、聚丙烯酸钠、海藻酸钠、壳寡糖、壳聚糖、D-氨基葡萄糖盐酸盐、乙基纤维素、聚维酮K30、卡波姆、结冷胶、黄原胶、果胶、瓜尔豆胶 瓜尔胶
- 主营：甘氨酸、儿茶黑、水苏糖、酪蛋白酸钠、红曲黄、可可壳、脆皮素、维纶胶、五香粉、硫酸锰、相苷酶、肌氨酸、除腥剂、烟酰胺、牛磺酸、褪黑素、碳酸镁、温轮胶、脯氨酸、叶绿素、冰乙酸、酸性红、淀粉钠、脂肪酶、大蒜粉、右旋糖
- 主营：水苏糖、海藻糖、番茄红、酪蛋白、精氨酸、可可棕、冰激凌、牛磺酸、赖氨酸、纤维素、乳糖酶、150油溶、调味品、黄原胶、食用稠、乳酸钙、淀粉钠、增筋剂、半乳糖、海藻酸、魔芋胶、防腐剂、沙蒿胶、牡蛎肽、调味粉
- 主营：L-精氨酸、L-瓜氨酸、L-色氨酸、L-酪氨酸、L-脯氨酸、L-赖氨酸、甘氨酸、L-亮氨酸、L-缬氨酸、L-苯丙氨酸、L-半胱氨酸、L-谷氨酰胺、支链氨基酸、蛋氨酸、丙氨酸、L-组氨酸、复合氨基酸、维生素B1、维生素B2、维生素B5、维生素B6、维生素C、维生素B12、香兰素
- 主营：定香剂、氧化铅、浮选油、酪蛋白酸钠现货发送、氧化铋、氟化铝、氟化镁、洗涤剂、异丙醇、漂粉精、漂白粉、白僵菌、乙酸钡、氟化钙、水杨酸、松醇油、碳酸钡、醋酸钡、95福美钠、苯丙乳液、三乙二醇、鱼虾养殖、单乙醇胺、三乙醇胺、氯偏乳液、快干水泥
- 主营：烟酰胺、泛酸钙、生物素、海藻酸钠、酪蛋白、黄原胶、瓜尔胶、L-半胱氨酸盐酸盐、海藻糖、谷氨酸、卡拉胶、乳清粉、赤藓糖醇、结晶果糖、木糖醇、甜菜碱、螺旋藻、乳清蛋白粉、氯化胆碱、肌酸、色氨酸、赖氨酸、鱼油粉、刺槐豆胶、阿拉伯胶
- 主营：L-半胱氨酸、L-苯丙氨酸、L-谷氨酸、L-酪氨酸、L-蛋氨酸、L-谷氨酰胺、L-瓜氨酸、L-精氨酸、L-赖氨酸、L-亮氨酸、L-色氨酸、L-天门冬氨酸、L-缬氨酸、L-异亮氨酸、L-组氨酸、甘氨酸、γ-氨基丁酸、L-谷氨酸钾、维生素A、维生素B1、维生素B12、维生素B2、维生素B5、维生素B6、维生素D3
- 主营：甘氨酸、滑石粉、三甘醇、丁酸钠、生桐油、水杨酸、葡聚糖、石英砂、薄荷脑、苯甲醇、平平加、磷酸氢、扩散剂、漂白精、硬脂酸、消泡剂、蛋白胨、硫化锌、磷酸铁、黄糊精、硫酸钾、磷酸铝、磷铁粉、雷米邦、氧化铅
- 主营：阿拉伯胶、刺槐豆胶、瓜尔豆胶、海藻酸钠、聚丙烯酸钠、果胶、海藻酸丙二醇酯、黄原胶、结冷胶、卡波姆、抗性糊精、可得然胶、魔芋粉、塔拉胶、琼脂、沙蒿籽胶、羧甲基淀粉钠、明胶、温轮胶、阿斯巴甜、低聚果糖、低聚木糖、结晶果糖、菊粉、纽甜
- 主营：L-半胱氨酸、L-苯丙氨酸、L-谷氨酸、L-酪氨酸、L-蛋氨酸、L-谷氨酰胺、L-瓜氨酸、L-精氨酸、L-赖氨酸、L-亮氨酸、L-色氨酸、L-天门冬氨酸、维生素A、维生素B1、维生素B12、维生素B2、维生素B5、维生素B6、维生素D3、维生素E、复合维生素、阿拉伯胶
- 主营：乳酸链球菌素、甜菜碱、富铬酵母、植酸钠、海藻酸钠、酪蛋白酸钠、富硒酵母、富锌酵母、肉桂酸钾、茶多酚、富马酸、单宁酸、甘露寡糖、低聚半乳糖、魔芋粉、结冷胶、卡拉胶、果胶、黄原胶、低聚果糖、低聚木糖、水苏糖、三氯蔗糖、维生素B1、肉桂酸
- 主营：复合维生素、阿拉伯胶、刺槐豆胶、海藻酸钠、聚丙烯酸钠、酪蛋白 干酪素、瓜尔豆胶 瓜尔胶、果胶、黄原胶、结冷胶 低酰基结冷胶、卡波姆、卡拉胶、可得然胶、魔芋粉、琼脂 琼脂粉、羧甲基纤维素钠、明胶、温轮胶 威兰胶、聚维酮K30、乙基纤维素、D-氨基葡萄糖盐酸盐、壳聚糖、壳寡糖
- 主营：阿洛酮糖、阿斯巴甜、安赛蜜、酪蛋白酸钠厂家、低聚木糖、甘露寡糖、麦芽糖醇、木糖醇、纽甜、乳糖、三氯蔗糖、水苏糖、甜菊糖、罗汉果甜苷、β-环状糊精、阿拉伯胶、刺槐豆胶、大豆蛋白粉、大豆分离蛋白、瓜尔豆胶、黄原胶、结冷胶、果胶、维生素A、维生素B1、维生素b1
- 主营：L-半胱氨酸、L-苯丙氨酸、L-谷氨酸、海藻酸钠、聚丙烯酸钠、L-蛋氨酸、维生素A、维生素B1、维生素B12、维生素B2、维生素B5、维生素B6、维生素C、维生素D3、维生素E、D-生物素、阿拉伯胶、刺槐豆胶、瓜尔豆胶、果胶 高酯果胶 低酯、黄原胶、结冷胶 低酰基结冷胶、卡波姆
- 主营：五氧化二钒、苄基胂酸、水杨酸、酪蛋白酸钠质量保障、水玻璃、氨基磺酸、多聚甲醛