*2.12. Scanning Electron Microscopy (SEM)*

Bacterial cellulose was lyophilised for 24 h (Christ b 1,8-LSC plus, Martin Christ GmbH, Osterode am Harz, Germany) and then gold-coated (EM-Scope SC500). SEM analysis was undertaken on a Zeiss Evo 50 EP, SEM (Carl Zeiss AG, Oberkochen, Germany). The SEM was set to a 10 kV acceleration beam at 100 μA. The probe ampere was set at 36 pA, and the data were analysed on INCA software (version 7.2, ETAS, Stuttgart, Germany).
