Research Article

Designing of Collagen Based Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) Scaffolds for Tissue Engineering

Table 1

Endotoxin levels present in the P(3HB-co-4HB) scaffolds recovered by the chloroform extraction method before and after pyrogen removal.

PolymerEndotoxin before pyrogen removal (EU/g)Endotoxin after pyrogen removal (EU/g)

P(3HB-co-20% 4HB)16 ± 20.5 ± 0.1
P(3HB-co-35% 4HB)16 ± 11.0 ± 0.2
P(3HB-co-50% 4HB)32 ± 21.0 ± 0.3
P(3HB-co-82% 4HB)16 ± 10.5 ± 0.1