Yes, but it is a smaller risk than it was, and it sits mainly in chilli powder rather than whole pods. Sudan dyes are industrial colours that are not permitted in food, and they have been found in chilli products in the past.
If you buy ground chilli, or anything made from it, include Sudan dyes in your test plan. If you buy whole pods, the risk is lower but you should still know where and how the chilli was processed.
What Sudan dyes are
Sudan I to IV are red and orange synthetic dyes made for oils, waxes, solvents and plastics. They are classed as possible carcinogens and are banned as food additives in the EU, the UK, the US and India.
They were added to chilli powder to make a dull or low-grade product look redder and fetch a better price. Similar dyes, such as Para Red and Rhodamine B, have been used in the same way.
Why buyers still worry
In the early 2000s, Sudan I found in chilli products led to large recalls in Europe and to EU emergency rules requiring chilli imports to be tested. Those events shaped how European buyers think about chilli to this day.
Since then, testing at origin and at the border has become routine and the number of cases has fallen. Economic adulteration has not gone away, though. When chilli prices rise or colour is short in a season, the incentive to add colour returns. Check recent notifications in the RASFF portal to see the current picture.
Where the risk is highest
- Chilli powder and crushed chilli, where colour can be mixed in and hidden.
- Blends and curry powders containing chilli.
- Low-colour lots sold with a surprisingly high colour value.
- Suppliers who buy powder from other grinders and resell it.
- Whole pods: low risk, though surface colouring has been reported for some products, so inspect the look and feel.
How to protect yourself
The checks below are specific to illegal dyes. Our guide to avoiding spice adulteration covers the wider set.
- Test each powder lot for Sudan I to IV and other illegal dyes by HPLC or LC-MS at an accredited lab.
- Compare the ASTA colour value with what the variety should give. A mild-looking source with very high colour is a warning sign.
- Buy from a processor that grinds in its own plant from whole pods you can see.
- Write "no added colour, free from Sudan I to IV and other non-permitted dyes" into the spec, with the test method.
- Keep a retained sample from every lot.
How we help
We confirm during the audit that the factory grinds its own chilli from whole pods, and we have sealed lot samples screened for illegal dyes at an NABL-accredited lab with the original report sent to you. If chilli powder is on your list, request a free sourcing review.