*2.4. Physicochemical Properties*

The moisture content of PEP was determined in duplicate (*n* = 2) according to Figiel et al. [20] using Vacucell 111 Eco Line at 80 ◦C for 20 h. The results were expressed as %. The water activity of the PEP was done at 25 ◦C by Water Activity Meter AquaLab (DewPoint 4Te, Decagon Devices Inc., Pullman, WA, USA) (*n* = 2). The colour of the samples was determined in a CIE *L*\**a*\**b*\* system using a Minolta Chroma Meter CR-400 (Minolta Co. Ltd., Osaka, Japan). Data were presented as an average value of five measurements (*n* = 5).
