Conductivity, pH, carotenoid, polyphenol and micro- and macronutrient content (SEM-EDS) were detd. in carrot mousse samples contg. various amts. of avocado seed powder (MPA). With increasing MPA content, a decrease in pH and an increase in conductivity were obsd., indicating the presence of acidic electroactive minerals. The addn. of MPA increased the content of bioactive compds. (carotenoids and polyphenols). The increase in polyphenol content was particularly pronounced, indicating the strong antioxidant properties of MPA. SEM imaging revealed an increase in surface roughness and pore vol. in the materials with MPA addition.