Fig. 2: Depolymerization characteristics of EPS through the digestion of P. vancaurica.

a SEM images showing surface modifications of EPS after biodegradation by the gut flora, ai–ii the EPS control and aiii–iv the biodegraded EPS by the clamworms. Bar, 200 μm or 100 μm. b The particle size of frass was observed by a stereo microscope after 2% SDS washing. c i-ii The EPS debris in the gut of clamworm was examined under a stereomicroscope. d The distribution of microplastic sizes of the extracted EPS frass.