Ingredient

L-cysteine Hydrochloride

Auto-generated content. This description was generated automatically and is pending editorial review. Inaccuracies are possible. Found a mistake? Contact us.

Source
Animal-derived
Allergen
No
Role in food
Manufacturers use it as a dough conditioner in baked goods, improving texture and reducing …

What it is

L-cysteine hydrochloride is a salt form of L-cysteine, an amino acid. It is commonly produced through the hydrolysis of animal proteins, such as feathers or hair, or through fermentation processes.

Why it's used

Manufacturers use it as a dough conditioner in baked goods, improving texture and reducing mixing time. It can also act as a flavor enhancer and is found in products like breads, pizzas, and pretzels.

Health notes

In the US, L-cysteine and its salts are generally recognized as safe (GRAS) by the FDA when used as intended. International bodies like JECFA have evaluated L-cysteine. Evidence does not indicate adverse health effects from typical dietary intake.

Allergen info

L-cysteine hydrochloride is not derived from any of the 9 FDA major allergens. It does not contain gluten.

Products containing L-cysteine Hydrochloride

Compare products →
Sort by: Sugar Protein Sodium Calories
Dr. Oetker, Ristorante, Thin Crust Pizza With Pepperoni, Mozzarella, Pesto Dr. Oetker Canada Ltd Dr. Oetker, Ristorante, Thin Crust Pizza With Pepperoni, Mozzarella, Pesto Pizza High in sodium — 26% DV per serving High in saturated fat — 25% DV per serving 250kcal 8.3Protein 13.3Fat 25Carbs LETTIERI'S Ham, Egg & Cheese Stacker Squares Breakfast Sandwiches, Biscuits & Meals High in sodium — 46% DV per serving High in saturated fat — 40% DV per serving High in cholesterol — 38% DV per serving 221kcal 11.0Protein 10.3Fat 20Carbs STEAK-EZE Pretzel Burger Frozen Dinners & Entrees High in sodium — 53% DV per serving High in saturated fat — 55% DV per serving High in cholesterol — 29% DV per serving 286kcal 16.1Protein 13.6Fat 22.1Carbs Pepperoni Provel Cheese Thin Crust Pizza, Pepperoni LENA'S Pepperoni Provel Cheese Thin Crust Pizza, Pepperoni Pizza High in sodium — 42% DV per serving High in saturated fat — 35% DV per serving 260kcal 9.8Protein 13.0Fat 26.0Carbs Conagra Brands HEBREW NATIONAL Franks In A Blanket, 18.4 OZ Meat/Poultry/Other Animals Prepared/Processed High in sodium — 30% DV per serving High in saturated fat — 45% DV per serving 354kcal 11.0Protein 28.1Fat 13.4Carbs NOT A BRANDED ITEM Mini Lemon Tarts, Lemon Croissants, Sweet Rolls, Muffins & Other Pastries High in saturated fat — 40% DV per serving High in added sugars — 50% DV per serving 324kcal 2.9Protein 14.7Fat 46.3Carbs PUBLIX Pumpkin Pie, Pumpkin Cakes, Cupcakes, Snack Cakes High in saturated fat — 35% DV per serving High in added sugars — 50% DV per serving 304kcal 5.6Protein 13.6Fat 39.2Carbs BREMER Steak And Cheddar Cheese In A Crust Hot Stuffed Sandwiches, Steak And Cheddar Frozen Appetizers & Hors D'oeuvres High in sodium — 20% DV per serving High in saturated fat — 45% DV per serving 266kcal 9.4Protein 12.5Fat 28.1Carbs DILUSSO Black Forest Ham And Swiss Croissant, Black Forest Ham And Swiss Prepared Subs & Sandwiches High in sodium — 79% DV per serving High in saturated fat — 45% DV per serving High in cholesterol — 25% DV per serving 212kcal 14.1Protein 9.4Fat 18.8Carbs Topco Associates, Inc. Stuffed Sandwich Frozen Appetizers & Hors D'oeuvres High in sodium — 25% DV per serving High in saturated fat — 40% DV per serving 268kcal 8.7Protein 11.8Fat 31.5Carbs Topco Associates, Inc. Meatballs & Mozzarella Italian-Style Meatballs Layered With Melted Mozzarella Cheese & Garlic Tomato Sauce In A Crispy Seasoned Crust Stuffed Sandwiches, Meatballs & Mozzarella Frozen Appetizers & Hors D'oeuvres High in sodium — 20% DV per serving High in saturated fat — 35% DV per serving 252kcal 7.9Protein 10.2Fat 32.3Carbs Topco Associates, Inc. Philly Cheesesteak Lean Stuffed Sandwiches Frozen Appetizers & Hors D'oeuvres High in sodium — 22% DV per serving 213kcal 7.9Protein 5.5Fat 33.9Carbs
Salt (489 products) Water (477 products) Riboflavin (462 products) Thiamine Mononitrate (459 products) Niacin (455 products) Folic Acid (449 products) Sugar (424 products) Wheat Flour (413 products) Enzymes (404 products) Yeast (386 products)

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.