What is E1401?
A modified starch made by treating ordinary starch with a mild acid, used to fine-tune texture and thickness in sauces, soups and processed foods.
E1401 (acid-treated starch) is made by treating native starch with a dilute mineral acid to shorten its starch chains, changing how it thickens when mixed with water. Regulators consider it well reviewed and low-risk, with no formal daily intake limit set anywhere. Goodnessly rates it Caution, in line with how modified starches as a group are treated.
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Read the FAQ →
What is E1401?
E1401 is made by treating native starch (usually from maize, wheat, potato or tapioca) with a dilute mineral acid, typically hydrochloric or sulphuric acid, under controlled heat. This "acid hydrolysis" process shortens some of the starch molecule chains, which changes how the starch behaves when mixed with water — giving manufacturers more precise control over thickness and flow. Once treated, the acid is neutralised and washed out, leaving no meaningful chemical residue in the finished ingredient.
What's it used for?
- Thickening sauces, soups and gravies to a specific consistency
- Improving texture in dairy products and desserts
- Stabilising pie fillings and bakery products
- Fine-tuning viscosity in processed meat products
- Used as a gelling agent in some confectionery
Where you'll find 1401 on the shelf
Anywhere a product needs a precisely controlled thickness or texture.
Is E1401 safe? What the research says
Acid-treated starch belongs to the same well-reviewed family of modified starches as several other additives in this directory. Here's where regulators currently stand:
| Region | Status | What this means |
|---|---|---|
| AU/NZ Australia & New Zealand (FSANZ) | Permitted | Permitted as a thickener, stabiliser and gelling agent with no specific quantity restriction in most food categories. |
| EU European Union (EFSA) | Permitted, no ADI | Listed as E1401. EFSA's re-evaluation of the modified starch family concluded no numerical Acceptable Daily Intake was needed, finding the acid treatment doesn't raise a safety concern at the levels used in food. |
| US United States (FDA) | GRAS | Holds Generally Recognized As Safe status under 21 CFR 172.892, specifically permitted for acid modification using hydrochloric or sulphuric acid. |
Acid-treated starch is digested the same way ordinary dietary starch is — gut enzymes break it down into glucose. The acid treatment shortens some starch chains but doesn't change the fundamental type of molecule, and no meaningful acid residue remains after the neutralising and washing steps in production.
- No significant regulatory changes: acid-treated starch has been reviewed alongside the broader modified starch family, with no restrictions introduced since. It isn't currently subject to the kind of re-evaluation debate affecting some newer synthetic additives.
This section is checked periodically rather than continuously — if you're reading this well after the date above, it's worth confirming nothing has changed before citing it.
Who this matters to
- People with coeliac disease or a wheat allergy — E1401 can occasionally be derived from wheat starch, and generic "modified starch" labelling won't tell you the source
- Anyone avoiding genetically modified ingredients, since maize is a common raw material
- Otherwise, no population group has a specific safety-based reason to limit E1401
Goodnessly rates E1401 Caution, consistent with how modified starches are treated as a group. The underlying safety data is well established, with the caution reflecting sourcing and processing questions rather than any identified toxicological risk.
How to spot it on a label
E1401 is often declared generically. Look out for:
- Acid-treated starch
- Modified starch
- 1401 or E1401
- "Modified wheat starch" if wheat-derived (an allergen declaration, not a different additive)
Sauces, soups and dairy desserts are the most common places to find it.
Related additives
Frequently asked questions
Is E1401 the same as modified starch?
E1401 is one specific type of modified starch, acid-treated starch. Ingredient lists often just say "modified starch" without specifying which variant is used, which is why the generic term and the E number don't always line up one-to-one.
What acid is used to make E1401?
Typically dilute hydrochloric acid or sulphuric acid, applied to native starch under controlled heat. The acid is neutralised and washed out during production, leaving no meaningful residue in the finished ingredient.
Is E1401 gluten-free?
Usually, but not always. E1401 is most commonly made from maize, potato or tapioca starch, all naturally gluten-free. It can occasionally be made from wheat starch, in which case it must be declared as "modified wheat starch" for allergen labelling purposes.
Does Goodnessly rate E1401 as safe, caution, or avoid?
Goodnessly rates E1401 (Acid Treated Starch) as Caution, consistent with how modified starches are treated as a group. EFSA's re-evaluation found no need for a formal Acceptable Daily Intake, concluding the acid treatment doesn't raise a safety concern at the levels used in food.
Is acid-treated starch digested differently to normal starch?
No. Despite the name, acid-treated starch is digested and absorbed the same way ordinary dietary starch is. Gut enzymes break it down into glucose in the usual way; the acid treatment only shortens some of the starch chains before it ever reaches you.
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