In our preliminary study, we observed no significant change in
the crystalline structure of BC-gelatin films prepared by immersing the wet BC pellicle in 0%–30%
(w/v) gelatin aqueous solutions (data not shown). The similar result was reported by Kim et al. in
2010 [29]. However, in this study, the modification by adding gelatin in the culture medium showed
the influence on crystallinity of the films