Fig. 2
From: Effects of the absorbent types on changes in benzo[a]pyrene and volatile compounds in sesame oil
Effects of the combination of activated carbon and other adsorbents on the reduction of benzo[a]pyrene in sesame oil. The symbols of each samples are as follows: Control, sesame oil sample with no treatment; PW, sesame oil samples filtrated with powdered activated carbon made from wood; PW + kaolin, sesame oil samples filtrated with a mixture of PW and kaolin at a ratio 1:1; PW + celite, sesame oil samples filtrated with a mixture of PW and celite at a ratio 1:1; PW + acid clay, sesame oil samples filtrated with a mixture of PW and acid clay at a ratio 1:1. Data are expressed as mean ± SEM (n = 3). The presence of different letters (a–d) indicates a statistical difference at P < 0.05 between bars