In another
study, the total PAHs in Portuguese sausages prepared by direct
and indirect smoking process ranged between 150 and 870 lg/kg
and the effect of fat addition at 20% and 40% along with casing type
(hog and collagen) were analyzed. Hog casing samples with high
applied fat and direct smoking exhibited higher PAHs content
while single factors application i.e. fat and smoking technique
alone showed negligible influence on PAHs levels. Contrarily, lower
concentrations were achieved by application of collagen casing on
sausages, at all fat and smoking parameters, exhibiting casing type
as highly influential variable (Gomes, Santos, Almeida, Elias, &
Roseiro, 2013).