Researchers have developed an improved testing approach for polycyclic aromatic hydrocarbons, or PAHs, which can form in foods cooked at high temperatures.
A 2025 study from the Department of Food Science and Biotechnology at Seoul National University of Science and Technology tested the QuEChERS method on multiple food types. Led by Professor Joon-Goo Lee, the team measured eight specific PAHs and found the highest levels in soybean oil, followed by duck meat and canola oil.