The fluorescence of Nile red in LNC-loaded gels was followed up to 1 month after dispersion in the gel to study the stability of encapsulation. A LabRAM laser scanning confocal microspectrometer (Horiba SA, Villeneuve d’Ascq, France) was used in this experiment. Samples of 500 mg of gel were scanned with the 488 nm line of an Ar+ laser (laser power at the sample was ca. 170 μW) under a 10× microscope objective (Olympus, Japan), with a confocal hole opened to a diameter of 1000 μm, in order to obtain a statistically averaged analysis of a large sample volume. Acquisition and data analysis were carried out with LabSpec 4.18 software (Horiba SA, France)