Acrylamide content of potato at different stages of French fry production. C, Control or raw potato strips; CD: Control strips dried at 85 C for 10 min; CDP: Control strips dried at 85 C for 10 min, partially fried at 170 C for 1 min and frozen at 30 C for 2 days; CDPF: Control strips dried at 85 C for 10 min, partially fried at 175 C for 1 min, frozen at 30 C for 2 days and finally fried at 175 C for 3 min.