Preservative Silk Gel Formulations

Example 11

FIG. 93 is a table summarizing embodiments of preservative gels of the present disclosure. Silk gels were cast with standard 2% silk solution and 100 mg L-ascorbic acid/15 mL solution with the addition of a preservative and chelating agent. The preservative added was Verstatil SL by Kinetic (Water, Sodium Levulinate, Potassium Sorbate) at 1.5% and the chelating agent was Dermofeel-PA3 by Kinetic (Sodium Phytate) at 0.1%. The addition of preservatives extended gelation time to 7 days. Gel is being observed for discoloration and integrity with L-ascorbic acid and ascorbic acid-2-glucoside gel comparisons.