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Is E412 (guar gum) halal? The bean behind the thickener

Guar gum (E412) is the ground endosperm of the guar bean, so pure plant. The usual production is splitting, sifting and milling, and it uses no solvent at all. That makes E412 halal, and more plainly so than most E-numbers.

Published 11 September 2026

If you read E412 on a pack you see a number and think of chemistry. What stands behind it is a legume. Guar gum is the ground kernel of the guar bean, which puts E412 among the few additives where the question of origin never arises in the first place.

What is E412?

E412 stands for guar gum. It is a thickener and stabiliser: it binds water, keeps a mixture creamy and stops a product from separating or, in ice cream, from forming coarse crystals. On an ingredient list you will see it as "guar gum", "guar" or simply as E412.

What guar gum is made from (the guar bean)

The guar bean (Cyamopsis tetragonoloba) is a legume, grown mostly in India and Pakistan. Its seed has three parts: the hull, the germ, and the nutritive tissue between them, the endosperm. Only that endosperm becomes E412.

The active substance in it is a galactomannan, a long-chain polysaccharide of mannose and galactose in a ratio of roughly two to one. It binds many times its own weight in water, and that is exactly what makes guar gum useful in a kitchen and in a factory.

How it is made, and why that settles the halal question

Production is a mechanical process, not a chemical one:

The seeds are cleaned and split in a mill so the endosperm halves come free.
The germ is sifted off.
The hull is loosened with moist or dry hot air, because hull and endosperm swell differently.
The endosperm is milled, sieved and packed.

Splitting, sifting, hot air, milling. No animal substance appears anywhere in that sequence, and no solvent either. That is the difference from E471 or E435, where the same number can stand for a plant raw material and for an animal one, and also from carrageenan (E407), where at least the precipitating agent is discussed.

Three words that sound worse than they are

Search a little deeper and you meet three terms that need explaining.

Alcohol. For especially clear grades there is an extra purification step: the guar gum is dissolved in hot water and precipitated again with ethanol or isopropanol. That does not apply to the ordinary food grade but to what is called clarified guar gum. And there too: a solvent is a processing aid, not an ingredient. It is driven off, which is also why it never appears on the ingredient list.

Peroxide. During purification the guar splits may be bleached with hydrogen peroxide. That is another aid, and it decomposes. It is not an animal product and not a halal question.

Protein. Food-grade guar gum contains roughly four to ten per cent protein depending on the grade. That sounds like an animal, but it is simply the bean's own protein left in the endosperm by the milling. Clarified grades sit well below it.

The other thickeners on the same line

Guar gum rarely stands alone on an ingredient list. Usually one of these numbers sits next to it, and none of them is a question of origin:

E410, locust bean gum, likewise from the seed of a plant.
E415, xanthan, from fermentation.
E440, pectin, from apples and citrus peel.

In our E-number list all three sit in the green section, exactly like E412.

Where it turns up

E412 is approved in the EU for more than eighty food categories. Typical ones are ice cream and desserts, yoghurt and cream cheese, sauces and dressings, baked goods and especially gluten-free ones, plus soups and ready meals. Under conditions it is also permitted in infant formula.

And as always: E412 being halal says nothing about the rest of the product. The guar gum in a ready-made sauce is unproblematic, the ingredient next to it may or may not be. An ingredient list is read all the way through.

In short

E412 = guar gum, a thickener and stabiliser from the guar bean.
Only the endosperm of the seed is processed, purely plant, therefore halal.
The usual production is mechanical: split, sift, hot air, mill. No solvent.
Only clarified grades are additionally precipitated with ethanol or isopropanol, and that does not stay in the product.
The peroxide and the protein content are not halal questions either.
Watch the product around the number, not only the number.

Common questions

Is E412 halal?

Yes. Guar gum is obtained from the endosperm of the guar bean and contains no animal components. The usual production steps are purely mechanical, so E412 counts as halal.

What is guar gum made from?

From the seed of the guar bean (Cyamopsis tetragonoloba), a legume grown mostly in India and Pakistan. Only the endosperm is processed, the nutritive tissue between hull and germ. It is split, sifted and milled.

Is alcohol used in making guar gum?

Only for clarified grades. There the guar gum is dissolved in hot water and precipitated again with ethanol or isopropanol. That is a processing aid and not an ingredient, which is why it does not appear on the ingredient list. The ordinary food grade uses no solvent at all.

Is guar gum vegan?

Yes. Guar gum is a pure plant product, and it is often used precisely where animal binders such as gelatine are to be replaced.

Is E412 the same as locust bean gum?

No. E410 (locust bean gum) comes from the seed of the carob tree, E412 from the guar bean. Both are plant thickeners and both are unproblematic, but they are different plants.