The diffusion of NaCl into the matrix of the meat is normally slow but can be improved by injection, however this process produces lower-quality cured products. It has been observed that the permeability of the muscle tissue increases with ultrasound and this can be used to estimate the effect of ultrasound in the brining of meat (Leal-Ramos, Alarcón-Rojo, Mason, Paniwnyk, and Alarjah, 2011).