Adipic acid (E355)
No. Adipic acid (E355) is not one of the markers Open Food Facts uses to classify a food as processed or ultra-processed, so on its own it doesn't raise a product's NOVA group.
What it is
A food additive authorised for industrial food production.
A product that contains it can still be ultra-processed for other reasons: 5 of the 5 products here that contain adipic acid (E355) (100%) are in group 4 because of other ingredients or additives.
Where it turns up
Adipic acid (E355) appears in 5 of the 40,000 products on this site (0%).
