Preliminary Characterization of Genipin-Cross-Linked Silk Sericin/Poly(vinyl alcohol) Films as Two-Dimensional Wound Dressings for the Healing of Superficial Wounds

Table 1

Surface density, degree of cross-link, and water contact angle of silk sericin/PVA films cross-linked with genipin at different concentrations (0, 0.01, 0.025, 0.05, 0.075, and 0.1% w/v).

Genipin concentration (% w/v)	Surface density (mg/mm^3)	Degree of cross-link (%)	Contact angle (°)
0	1.28±0.04	—	54.91±4.29
0.010	1.33±0.06^∗	13.84±2.59	54.71±9.74
0.025	1.33±0.03^∗	18.82±4.00	52.06±7.66
0.050	1.36±0.09^∗	22.64±1.89^†	53.85±3.29
0.075	1.35±0.07^∗	29.75±6.46^†	52.63±3.57
0.100	1.35±0.10^∗	38.97±4.51^†	54.04±10.10

 *P < 0.05, significant against the value of non-cross-linked film.
^†P < 0.05, significant against the value of films cross-linked with 0.01% w/v.