Dir-se-ia que sim: Apesar destas marcas não existirem em PT, o panorama dos crispies no Mac, KFC e afins não deve ser muito diferente:
http://m.huffpost.com/uk/entry/uk_58e26d43e4b0b3918c85402a
Citando:
"Almost one in five crisp varieties contain high levels of a known carcinogen called acrylamide, a new report has revealed.
Acrylamide has the potential to cause cancer in humans and, as such, is considered a public health concern by the European Food Safety Authority (EFSA).
A review of 92 types of crisps from major UK snack brands and supermarkets found that some crisps - including snacks from Tyrrells, Aldi and Morrisons - exceeded the maximum recommended level of acrylamide."
(...)
"These levels are 2.5-times above the European benchmark, which is 1000 micrograms per kilogram and over 83-times higher than products with the lowest concentration.
Morrisons’ cheese and onion flavoured popped potato snacks came next, containing 2067 micrograms of acrylamide per kilogram, followed by the supermarket’s sea salted crinkle cut potato crisps which contained 1826 micrograms per kilogram."