Aqueous Silk Fibroin From Silk Textiles
AssigneeCanon Virginia, Inc.
InventorsYoko Fukuda, Andre Smagin
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Abstract
There is provided methods of preparing aqueous silk fibroin from recycled silk textiles. The methods can include removing dye from recycled silk textiles prior to preparing the aqueous silk fibroin. The method can include pre-treating the recycled silk with a dye removal agent, optionally in the presence of heat, dissolving the textile, dialyzing the dissolved textile, and optionally centrifuging the dialyzed solution. There is also provided a two-step process that utilizes heat and pressure incubation of the textile with dye removal solution prior to dissolving the textile. As a result of the provided methods, an aqueous silk fibroin product is produced that can be colorless or have a desired level of coloration for downstream usage.
Claims22
A process for preparing aqueous silk fibroin from a textile comprising silk, comprising the steps of:
- optionally boiling the textile;
- dissolving the textile;
- and
- performing dialysis or diafiltration on a solution resulting from dissolving the textile.
A process for preparing aqueous silk fibroin from a textile comprising silk, comprising the steps of:
- adding the textile to a dissolving solution, wherein the solution dissolves the textile;
- performing dialysis or diafiltration on the dissolved textile solution;
- and,
- optionally centrifuging the dialyzed or diafiltration solution.
A process for preparing aqueous silk fibroin from a textile comprising silk, comprising the steps of:
- pre-washing the textile in warm water;
- adding a dye removal agent to hot water;
- pre-washing the textile in warm water;
- adding the textile into the dye removal solution;
- removing the textile;
- rinsing the textile in water;
- dissolving the textile;
- performing dialysis or diafiltration on the dissolved textile solution;
- and,
- optionally centrifuging the dialyzed or diafiltration solution.
A process for preparing aqueous silk fibroin from a textile comprising silk, comprising the steps of:
- pressure-cooking or boiling the textile in a surfactant;
- pressure-cooking or boiling the textile in a dye removal solution;
- dissolving the textile;
- performing dialysis or diafiltration on the dissolved textile solution;
- and,
- optionally centrifuging the dialyzed or diafiltration solution.
An aqueous silk fibroin prepared by dissolving a textile comprising silk.
Dependencies are inferred from the claim text.