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. 2017 Feb 13;17(7):723–731. doi: 10.1002/elsc.201600220

Figure 5.

Figure 5

Chain length characterization of the produced polySia. The maximal chain length of the produced polySia was determined ∼90 DP with DMB‐HPLC. The chain length of commercially available polySia (Sigma‐Aldrich), was determined ∼70 DP. Oligosialic acid with a polymerization of 6 DP (Nacalai Tesque, Kyoto, Japan) was used as a control. Oligosialic acid and polySia was partially hydrolyzed during the derivatization with DMB. Therefore a quantitative distribution of the chain length was not possible.