Sample preparation methods
Two hot dogs of each kind were heated in a microwave (1000 W)
on high power according to package directions (35 s wrapped in a
paper towel). The fully-cooked bacon was heated in a microwave
(1000 W) on high for 30 and 60 s as per package directions. Pepperoni
taken from the top of the frozen pizza was analyzed as unheated
pepperoni. Oven-cooked pepperoni was taken from pizzas that had
been cooked for approximately 23 min in an oven at 204 °C (400 °F).
Microwave-cooked pepperoni was taken from pizzas cooked in a
microwave (1000 W) on high for approximately 4 min per package
directions. For the rotisserie chicken, whole skin was removed from
each chicken. Skin and meat of chicken was analyzed separately. Deli
roast beef, deli ham, and deli turkey were used as obtained. All
samples were chopped and mixed thoroughly before analysis.