3.3. Magnitude of extraction yield
The optimised extraction conditions were identified as 70 C,
2 h, a solvent loading of 2.5 and agitation speed of 200 rpm. At these
conditions the bio-flocculants exhibited the highest extract yield at
2.38 ± 0.07%. Whilst this seems a low value, it is comparable to the
yield obtained for extraction of polysaccharides from other studies,
as shown in Supplementary Table S4. The yield obtained in this
work is within the range identified by other studies (0.69e3.66%).