Ingredient

Rennet Casein Milk Protein

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Source
Animal-derived
Allergen
No
Role in food
Manufacturers use rennet casein as a protein source and for its functional properties in …

What it is

Rennet casein is a milk protein derived from milk. It is produced by adding rennet, an enzyme, to milk, which causes the casein protein to coagulate and separate from the whey. This curdled casein is then washed, dried, and processed into a powder.

Why it's used

Manufacturers use rennet casein as a protein source and for its functional properties in processed foods. It can act as a binder, emulsifier, and texturizer, contributing to the chewiness and structure of products like cheese, processed meats, and baked goods.

Health notes

Rennet casein is generally recognized as safe (GRAS) by the FDA for use in food. It is a source of protein and calcium. Regulatory bodies like JECFA have evaluated casein proteins. Evidence does not suggest adverse health effects from typical dietary intake.

Allergen info

Rennet casein is derived from milk, which is one of the nine major allergens recognized by the FDA. It does not contain gluten.

Products containing Rennet Casein Milk Protein

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Supervalu, Inc. Three Meat Pizza, Sausage, Pepperoni & Ham Pizza High in sodium — 28% DV per serving High in saturated fat — 25% DV per serving 252kcal 7.5Protein 10.2Fat 32.0Carbs Frozen Specialties, Inc. Pepperoni Crispy Crust Pizza, Pepperoni Pizza High in sodium — 30% DV per serving High in saturated fat — 30% DV per serving 246kcal 7.8Protein 10.6Fat 29.6Carbs The Federated Group, Inc. Individual Pizza Pizza High in sodium — 27% DV per serving High in saturated fat — 25% DV per serving 252kcal 7.5Protein 10.2Fat 32.0Carbs Crispy Thin Crust Pizza Food Town Stores Inc. Crispy Thin Crust Pizza Pizza High in sodium — 28% DV per serving High in saturated fat — 25% DV per serving 252kcal 7.5Protein 10.2Fat 32.0Carbs Supreme Sausage, Pepperoni, Red & Green Peppers, & Onions Pizza, Supreme The Moran Group Incorporated Supreme Sausage, Pepperoni, Red & Green Peppers, & Onions Pizza, Supreme Pizza High in sodium — 27% DV per serving High in saturated fat — 22% DV per serving 245kcal 6.8Protein 8.8Fat 32.6Carbs Sausage & Pepperoni Pizza, Sausage & Pepperoni The Moran Group Incorporated Sausage & Pepperoni Pizza, Sausage & Pepperoni Pizza High in sodium — 29% DV per serving High in saturated fat — 25% DV per serving 259kcal 7.5Protein 10.9Fat 32.6Carbs Sausage & Pepperoni Microwavable Combination Pizza, Sausage & Pepperoni Wal-Mart Stores, Inc. Sausage & Pepperoni Microwavable Combination Pizza, Sausage & Pepperoni Pizza High in sodium — 41% DV per serving High in saturated fat — 35% DV per serving 255kcal 7.8Protein 10.3Fat 32.4Carbs Supreme Microwavable Sausage, Pepperoni, Red & Green Peppers And Onions Pizza, Supreme Wal-Mart Stores, Inc. Supreme Microwavable Sausage, Pepperoni, Red & Green Peppers And Onions Pizza, Supreme Pizza High in sodium — 40% DV per serving High in saturated fat — 35% DV per serving 250kcal 7.3Protein 9.8Fat 32.4Carbs Piggly Wiggly Company Combination Sausage Made With Pork & Chicken, Pepperoni Pizza, Combination Pizza High in sodium — 27% DV per serving High in saturated fat — 25% DV per serving 252kcal 7.5Protein 10.2Fat 32.0Carbs
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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.