E460 – Cellulose - Food additives database

Safety grading GREEN – SAFE

E460 is best treated as a single low-risk additive family because E460(i) microcrystalline cellulose and E460(ii) powdered cellulose share the same overall regulatory and toxicology conclusion. JECFA assigned an ADI (Acceptable Daily Intake) of “not specified” to powdered cellulose and maintained the same benign view for microcrystalline cellulose, while EFSA later concluded there is no need for a numerical ADI for the cellulose group. That judgment is based on the fact that these celluloses are not absorbed intact to any meaningful extent, plus animal studies showing low toxicity. In chronic rodent studies, reported NOAELs (No Observed Adverse Effect Levels) reached up to 9,000 mg/kg body weight per day, with renal tubular dystrophic calcification appearing only in one very high-dose microcrystalline cellulose group at 15,000 mg/kg body weight per day (Younes et al., 2018; PMID 32625652). A 90-day rat study also found no toxicologically significant adverse effects up to more than 5,000 mg/kg/day of microcrystalline cellulose (Kotkoskie et al., 1996; PMID 8982827).

Independent evidence supports the GREEN grade. A broad toxicology review concluded that chronic ingestion of purified cellulose across the lifespan of rats and mice did not increase spontaneous disease or neoplasia, and did not show adverse effects on reproduction or neonatal development (Anderson et al., 1992; PMID 1562993). Human data are also reassuring. In healthy volunteers, a 5 g dose of microcrystalline cellulose caused fewer abdominal symptoms than more fermentable fibres such as guar gum and ispaghula (Bianchi and Capurso, 2002; PMID 12408456). In a multicentre clinical trial, cellulose improved stool frequency and stool characteristics without reported adverse reactions during the study period (Liu et al., 2009; PMID 19296258).

The main caveat is practical rather than toxicological. Because cellulose is an insoluble dietary fibre used for bulking and texture, very high intakes from heavily fortified foods or supplements can cause temporary fullness, bloating, firmer or bulkier stools, or other mild gastrointestinal effects in sensitive people. That does not make E460 unsafe at normal food-use levels. Overall, E460 deserves a GREEN – SAFE grade because it remains permitted in the European Union, has a long history of use, and the weight of evidence shows low risk at realistic dietary exposure.

Should You Avoid E460?

Most people do not need to avoid E460. It is generally a functional fibre ingredient, not a toxicological concern. You may choose to limit it if you personally notice bloating from fibre-enriched foods, if you are following a medically prescribed low-residue diet, or if you simply prefer minimally processed foods with fewer texture aids. For the average consumer, exposure from food is not considered a meaningful safety problem.

Common Uses

Shredded and grated cheese, where it helps prevent clumping.
Spice blends and dry seasonings, where it acts as an anti-caking and free-flow agent.
Bakery mixes, powdered drink mixes, and instant desserts, where it improves texture and handling.
Sauces, dressings, and low-fat foods, where it adds body and mouthfeel.
Processed meat and plant-based products, where it can improve structure and moisture handling.
Table-top sweeteners, food supplements, and tablets, where it functions as a bulking or carrier agent.

Common names / Synonyms

Cellulose
E460
E460(i) – Microcrystalline cellulose
E460(ii) – Powdered cellulose
Cellulose gel
Purified cellulose
Plant cellulose

What is it?

E460 is the food-additive designation for cellulose used as a texturiser, anti-caking agent, and bulking material. Chemically, cellulose is a natural polysaccharide made of long chains of glucose units linked by beta-1,4 bonds. It is the main structural component of plant cell walls, which is why it occurs naturally in fruits, vegetables, grains, and wood. Food-grade cellulose is not the same as raw sawdust or untreated plant waste. It is a highly purified ingredient manufactured from plant fibre, usually wood pulp or cotton linters, under controlled food-grade processing conditions.

The two main E460 subtypes are produced differently. E460(ii), powdered cellulose, is purified alpha-cellulose that is cleaned and mechanically milled into a fine powder. E460(i), microcrystalline cellulose, goes one step further. Manufacturers partially depolymerise purified cellulose, usually by controlled acid hydrolysis, which removes the more amorphous regions and leaves small crystalline fragments. That gives microcrystalline cellulose its useful functional properties, including compressibility, opacity, suspension support, and a smooth mouthfeel. In food, those properties help stabilise mixtures, improve body, reduce caking, and replace some of the texture that would otherwise come from fat or starch.

Humans do not digest cellulose efficiently because we lack the enzymes needed to break beta-1,4 cellulose bonds. Most ingested cellulose therefore passes through the gastrointestinal tract largely intact, although some fermentation can occur in the colon. This limited digestibility is one reason why the toxicology profile of E460 is so favourable. In practice, E460 behaves more like an inert insoluble fibre and processing aid than a reactive chemical additive. That is why it is widely used in both conventional food manufacturing and pharmaceutical tablets.

Where it’s allowed (EU vs US)

In the European Union, E460(i) and E460(ii) are authorised food additives and are permitted in a wide range of foods, often under the quantum satis principle, meaning only as much as needed for the intended technological function. In the United States, cellulose ingredients and microcrystalline cellulose are also used in foods for anti-caking, bulking, drying, and stabilising. The current evidence does not suggest a general ban or safety restriction for normal food use in either market.

E460 – Cellulose