Fig. 6.

In vitro biocompatibility and antioxidant activity of APTF hydrogel. In vitro cell studies: (a) Representative live/dead stained images of 3T3 cells on AP hydrogel and APTF hydrogel on day 1 and day 7. (b) Quantification of cellular viability for 3T3 cells seeded on AP and APTF hydrogel over 7 days of culture. (c) Cellular proliferation on AP hydrogel and APTF hydrogel over time based on PrestoBlue assay. In vitro antioxidant activity: (d) The color changes of the three DPPH• solutions containing hydrogel-lacking control, AP hydrogel, APTF hydrogel over time. (e) Absorbance change of DPPH• before and after the reaction. (f) The DPPH• scavenging activities of AP and APTF hydrogels.