“…β‐Carbolines including 1‐methyl‐9H‐pyrido[3,4‐b]indole (norharman) and 9H‐pyrido[3,4‐b]indole (harman) can also be formed at 100ºC (Meurillon & Engel, 2016). Studies have shown that HAAs can cause tumors in a variety of organs including liver, stomach, breast, intestines, lungs, and blood vessels (Barzegar, Kamankesh, & Mohammadi, 2019; Rahman, Sahar, Khan, & Nadeem, 2014). According to the carcinogenicity of HAAs, the International Agency for Research on Cancer (IARC) classified eight of the known HAAs (MeIQ, MeIQx, PhIP, AαC, MeAαC, Trp‐P‐1, Trp‐P‐2, and Glu‐P‐1) as possible human carcinogens (class 2B) and IQ as a probable human carcinogen (class 2A) (IARC, 1993).…”