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E1101No known concernIn 2,249 productsTypically vegan

Protease

E1101 is the European food-additive number for Protease. Protease (E1101) is a stabiliser used as a food additive.

Is E1101 safe or restricted?

E1101 is an approved food additive in the EU and currently carries no special regulatory restrictions in the EU additive register. Forkin classifies it as No known concern and does not make health claims. See the methodology for how regulatory levels are assigned, or the guide to how EU additives are approved, re-evaluated and banned.

Is E1101 vegan or vegetarian?

Protease (E1101) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians.

The production source can vary between manufacturers — the Forkin app shows the verified vegan and vegetarian status per product. Always read the label for allergens.

Which foods contain E1101?

E1101 appears in 2,249 of the 4.7 million products in Forkin's catalogue — most often in Protein Powder / Shake, Dietary Supplements, and Crackers.

  • Protein Powder / Shake1,057
  • Dietary Supplements248
  • Crackers160
  • Vitamins & Supplements40
  • Bread37
  • Chocolate Candy36
  • Pastry26
  • Beef (General)26

Often appears alongside

Additives most frequently found in the same ingredient lists as E1101 across the catalogue.

Counts reflect Forkin's independently enriched product catalogue and update as new products are added — they are not a market-share statistic.

Frequently asked questions about E1101

What is E1101?
E1101 is the E-number for Protease. Protease (E1101) is a stabiliser used as a food additive.
Which foods contain E1101?
E1101 appears in 2,249 of the 4.7 million products in Forkin's catalogue — most often in Protein Powder / Shake, Dietary Supplements, and Crackers. Scan any barcode with the Forkin app to see instantly whether a specific product contains it.
Is E1101 vegan or vegetarian?
Protease (E1101) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians. The Forkin app shows the verified vegan and vegetarian status per product, since the source can vary between manufacturers.
Is E1101 safe, and is it banned anywhere?
E1101 is an approved food additive in the EU and currently carries no special regulatory restrictions in the EU additive register. Forkin classifies it as ‘No known concern’ and does not make health claims — see the methodology page for how regulatory levels are assigned, and the Forkin app for the full profile, including acceptable daily intake (ADI) and restrictions by country.

See the full profile in Forkin

The Forkin app surfaces the full regulatory profile of E1101 — acceptable daily intake (ADI), restrictions by country, vegan and vegetarian status, alternative names, and which products in your scan history contain it. See view pricing.

Related additives

Regulatory-level classification based on EFSA re-evaluations and exposure assessments, IARC monograph groupings, the EU food additive register (Regulation (EC) No 1333/2008) and mandatory warning labels, ECHA harmonised CLP classifications, FAO/WHO JECFA acceptable-daily-intake reviews, and national measures (US FDA, Health Canada, California OEHHA Proposition 65). Informational only — not medical or dietary advice. See methodology for the rubric.