fig1

Figure 1. (A) A schematic process of the metabolic pathways of Acetobacter xylinum assembling cellulose molecules into nanofibrils. (B) Morphology of Acetobacter xylinum producing BC. The arrows refer to the width of cellulose nanofibers. (C) A scanning electron micrograph (SEM) of freeze-dried BC gel. (A) Reproduced with permission^[9]. Copyright 2013, Wiley. (B) Reproduced with permission^[11]. Copyright 2002, Springer. (C) Reproduced with permission^[14]. Copyright 2000, Springer.