The water-binding properties of ovine whey powder, as revealed by sorption isotherms and magnetic
resonance imaging, resulted in delayed firming and increased shelf life of cookies with whey powder
with respect to control cookies and did not influence the sensory properties. MRI allows visualizing
differences in internal structure and proton distribution of the two batches of Amaretti cookies, pointing
out the more homogeneous internal structure of the cookies where whey powder is added.