3.1.5 Molecular weight distribution analysis
The average weight molecular weight (Mw) of GP mainly distributed in the
range of 10-320 kDa by HPGPC and special GPC software (Fig. 1E). It was
revealed that the polysaccharides have four main peaks with molecular
weights of 26, 56, 152, and 275 kDa, with distribution percentages of
26.6%, 55%, 13.7%, and 4.8%, respectively. In addition, the average
difference in Mw between the peaks was 63 kDa, indicating that GP is a
mixture of a series of hetero-polysaccharides.