2.3.2. Amplitude of vibrationTo select the best parameter of vibration regarding the ampli-tude, sweet potato puree was used as the test material. Sweetpotato puree was chosen, because it is a product showingvery good results during applications of advanced heatingtechnologies such as MW heating, and also because of its rhe-ological characteristics as a highly viscous food product, withshear thinning behavior.