Establishment of activated carbon treatment conditions to reduce polycyclic aromatic hydrocarbons(PAHs) in soybean oil and perilla oil

Young-Ae Park, So-Young Jung, Nam-Hoon Kim, Young-Ju Lee, Joo-Yeon Jo, Ouk-Hee Kim, Jin-Kyung Kim, In-Sook Hwang, Mi-Sun Hong, Young-Hee Oh and Kwon Jeong

Nutrition Assessment Team

Seoul Metropolitan Government Research Institute of Public Health and Environment

This study was carried out to establish optimal treatment conditions for reducing the contaminated PAHs in soybean oil and perilla oil with the treatment of activated carbon. When the concentration of activated carbon was 0.05 ~ 2%, 8 kinds of PAHs in soybean oil were not detected at the lowest treatment concentration of 0.05%. The PAHs content in perilla oil showed reducing tendency as the concentration of activated carbon treatment increased while such tendency became slight from the activated carbon concentration larger than 0.4%. When the treatment temperature was in the range of 30 ~ 90 ℃, the PAHs content reduced with increasing treatment temperature and showed a lesser reduction over 60 ℃. The PAHs content reduced with increasing treatment time from 10 minutes up to 60 minutes(with 10 minutes interval). All of the 8 PAHs of soybean oil were not detected when treated with activated carbon for more than 40 minutes, while PAHs of perilla oil were less reduced as a whole and showed lesser reduction later than 40 minutes time period.