“Probing the change of enzymatic activity of horseradish peroxidase induced by membrane permeation using tryptophan fluorescence”. Carla A. M. Portugal, J. C. Lima, João G. Crespo. J. Membr. Sci., 284, 180-192, 2006.
"Anomalous “Unquenching” of the Fluorescence Decays of -lactoglobulin Induced by the Known Quencher Acrylamide”. Carla A. M. Portugal, João G. Crespo, J. C. Lima. Int. J. of Photochem. Photobiol. B: Biology, 82, 117-126, 2006.
"Accessing Gelling Ability of Vegetable Proteins Using Rheological and Fluorescence Techniques”. Ana Paula Batista, Carla A. M. Portugal, Isabel Sousa, João G. Crespo, Anabela Raymundo. Int. J. Biol. Macromol., 36, 135-143, 2005.