What E160a actually is
Beta-carotene is the pigment that makes carrots orange, used to colour margarine, cheese, and drinks. It is unusual among colours because the body converts it into vitamin A, so it is a nutrient as well as a dye. That is also why it is added to margarine, which would otherwise be white.
What it is made from
Three routes are in commercial use: extraction from carrots, algae, or palm; fermentation using the fungus Blakeslea trispora; and chemical synthesis. All three yield the same pigment, and the label does not distinguish them.
Vegan, vegetarian, and halal status
The carotene itself is plant, fungal, or synthetic in origin, never animal, so it suits vegan and halal diets. The one thing worth knowing is that because it is fat-soluble, it is often supplied in a carrier, and where that carrier is gelatine-based, as it can be in some encapsulated forms, the finished preparation is not vegan. Certified products have resolved this.
Is E160a safe?
Carotenes are permitted in the EU, UK, and US with a long history of use. EFSA reviewed beta-carotene and advised that intake from colours and supplements combined should stay below 15 mg per day. The important finding behind that advice came from two large trials in the 1990s, ATBC and CARET, where high-dose beta-carotene supplements increased lung cancer incidence in smokers and asbestos-exposed workers. That result applies to high-dose supplementation, not to the small amounts used as a food colour, and the distinction matters.
- High-dose supplements increased lung cancer incidence in smokers in the ATBC and CARET trials; this does not apply to colour-level use
- EFSA advises total intake from colours and supplements stays below 15 mg per day
- Very high intake turns skin orange, a harmless condition called carotenaemia
- Encapsulated forms can use a gelatine carrier, which would not be vegan
Where regulators stand
- EFSA (EU)
- Permitted. Advises total intake from colours and supplements stays below 15 mg per day.
- FDA (US)
- Beta-carotene is exempt from certification as a colour additive and is also permitted as a nutrient.
Foods it turns up in
- Margarine and fat spreads
- Cheese and dairy products
- Soft drinks and juices
- Breakfast cereals
- Supplements
Names it hides behind
- E160a
- Carotenes
- Beta-carotene
- Mixed carotenes
- Colour (E160a)
Common questions
- Is beta-carotene safe?
- At colour levels, yes. The concern comes from high-dose supplement trials where smokers had increased lung cancer incidence, which is a different exposure entirely from the amounts used to colour margarine.
- Is E160a vegan and halal?
- The pigment is plant, fungal, or synthetic and never animal. Watch the carrier in encapsulated forms, which can occasionally be gelatine-based.
- Does beta-carotene turn your skin orange?
- At very high intake, yes. It is called carotenaemia, it is harmless, and it fades when intake drops.
- Why is it in margarine?
- Margarine is naturally white. Carotene gives it the butter-like yellow people expect, and adds vitamin A activity at the same time.
- Is E160a the same as vitamin A?
- Not the same, but the body converts beta-carotene into vitamin A as needed, which is why it is called provitamin A.
Checking a real pack
This page answers the code. The pack in your hand is what decides, because the same code can come from different sources depending on the manufacturer. LabelWise, formerly SafeChoice, scans the label and explains what is in front of you.
LabelWise content is educational and describes how additives are made, regulated, and labelled. It is not medical, dietary, or religious advice. For certification questions, the mark on the pack and the certifying body are the authority.