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. 2022 Jan 23;17:204–220. doi: 10.1016/j.bioactmat.2022.01.023

Table 8.

Determination of the degree of substitution (DS) of COL-MA BS 0.5 and 1 EQ using 1H NMR spectroscopy (based on the amino acid sequence from the Swiss-Prot database, and the analyzed amino acid composition), OPA assay and shotgun proteomic analysis.

DS obtained via 1H NMR (based on database Swiss-Prot) [%] DS obtained via 1H NMR (based on known AA composition) [%] DS obtained via OPA [%] DS obtained via shotgun analysis [%]
COL-MA BS 0.5 EQ 76.6 75.9 74.1 74.9
COL-MA BS 1 EQ 103.7 99.6 95.8 80.4