*2.7. Storage Stability*

The effect of storage conditions (e.g., temperature and time) on the stability of nanoliposome suspensions were determined to assess their long-term physicochemical stability. The samples (1.0% *w*/*v* lecithin) with naringenin concentrations of 1.00 and 1.25 mg/mL were placed in 4 ◦C, 25 ◦C and 37 ◦C within 31 days. During storage, their encapsulation efficiency, mean particle size and ζ-potentials were recorded according to the same procedure described above at different time intervals.
