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. 2024 Mar 13;16(6):794. doi: 10.3390/polym16060794

Figure 2.

Figure 2

Morphology and production of BC. (a) Photographs of the freshly prepared BC film (left top), freeze-dried BC film (left bottom), and a scanning electron microscope (SEM) image of the BC film (right). (b) Schematic illustration of the bacterial cellulose preparation process by the bacterial cultivation method. Adapted from Ref. [57] with permission of SAGE Publications Ltd., 2022. (c) Illustration of the BC production process via the cell-free system. (I) Cultivation of cell-free enzyme solution with glucose source as carbon source, (II) formation of fibrils, (III) self-assembly of fibrils, (IV) formation of bio-cellulose pellicles, (V) formation of bio-cellulose pellicles, and (VI) harvesting of bio-cellulose pellicles. Adapted from Ref. [59] with permission of Elsevier Ltd., 2015.