In another study, PAHs content in Frankfurter type sausages
cooked through different smoke generation techniques is in order:
Friction smoked < Light smouldering smoke < Steam smoke < Medium
smouldering smoke < Touch smoke < Intensive smouldering
smoke. Moreover, pressure changes were accompanied with changes in PAHs content in friction and steam based techniques
while smoke density and ventilator velocities had prominent influence
on PAHs content in smouldering based smoking techniques
(Pöhlmann, Hitzel, Schwägele, Speer, & Jira, 2012).