Protease (E1101)
Updated October 2, 2026
Protease (E1101) is a food additive in the “emulsifiers & thickeners” group. It appears in 759 products in our database, 354 of them sold in the US.
Quick facts
- Also known as
- E1101
- E-number
- E1101
- Function
- Emulsifiers & thickeners
- Found in
- 759 products (354 sold in the US)
Foods that commonly contain Protease
Share of published products in each category whose ingredient list includes Protease.
Popular products with Protease
NOVA 4
e NOVA 4
NOVA 4
e NOVA 4
NOVA 4
e NOVA 4
NOVA 4
e NOVA 4
c NOVA 3
NOVA 4 Protease-free alternatives
Popular products from the same categories that don't list Protease and score Nutri-Score A–C.
a NOVA 4
a NOVA 4
b NOVA 4
a NOVA 4
a How to spot Protease on a label
Look for any of these names in the ingredient list:
Related additives
Frequently asked questions
What foods contain Protease?
In our database, Protease most often appears in protein powders, dietary supplements, biscuits and cakes and crackers (appetizers).
How many products contain Protease?
759 published products on Foodmetria list Protease, including 354 sold in the United States. Counts come from ingredient lists in Open Food Facts and update daily.
Product data: Open Food Facts (ODbL), updated daily. Additive information is for general education and is not medical advice. Always check the package label. Our methodology.