Fig. 2. (A) The zeta potential of both the lysozyme and the CMC solution in the pH range of 2.0–11.0. (B) The effect of the weight ratio of Ly and CMC and the degree of substitution of CMC on the particle size of Ly-CMC NGs. (C) The effect of pH on the particle size and PDI of Ly-CMC NGs from 2.0 to 10.0 during the synthesis process; control pH was set at pH 7.4. (D) The effect of different NaCl concentrations on the zeta potentials of NGs in the pH range of 2.0–11.0.
