Precipitation of Hemicelluloses from DMSO/Water Mixtures Using Carbon Dioxide as an Antisolvent

Figure 4

(a) SEM pictures of subcritically precipitated xylan and (b) mannan obtained in batch mode from aqueous DMSO (10%  H₂O, v/v). (c) SEM picture of xylan precipitates obtained in semicontinuous mode by spraying a solution of xylan in DMSO into scCO₂ at 40^°C and 150 bar.

(a)

(b)

(c)