Fig. 6. SEM images of the conversion produces with 0.3 g Gly, Arg and Glu after soaked in 0.15 M K2HPO4 with varied pH 3–12 at 37 °C for 10 d. The inserts in the upper right corner of (a1), (e1), (d2), (e2), (d3) and (e3) are close-up images. The inserts in the lower left corner of (a1) and (b1) are photos of bayberry and ping pong chrysanthemum, respectively. Note that the pH values appearing in the figures only indicate the initial ones before soaking the CC particles.
