Fig. 2

(A) The zeta potential values for CS-casein and CS-casein-Amla nanoparticles were − 41.3 ± 2.88 and − 35.7 ± 3.41, respectively. (B) Fourier Transform Infrared (FTIR) spectra of Amla, CS-casein and CS-casein-Amla nanoparticles