Wet tissue adhesive hydrogel toughened by wheat gluten.

Tissue adhesives made of natural polymers like protein have good biocompatibility but low adhesion in wet environments. Gluten is a rich naturally occurring protein with a highly soft and stretchable "loop and train" model network. To benefit from this remarkable feature, it was composited with poly(acrylic acid) (PAA) to make a tough double-network wet tissue adhesive hydrogel (G-PAA).

Chitin-glucan composite sponge hemostat with rapid shape-memory from Pleurotus eryngii for puncture wound.

Efficient hemostasis is a great challenge for treating the inaccessible hemorrhage wounds. A novel shape-memory chitin-glucan hemostatic sponge (ATC-Sponge) is constructed via sequentially in-situ removal of protein and glucan from Pleurotus eryngii fruiting body, TEMPO oxidation and Ca crosslinking. The sponge displays interconnected microporous structure with high water absorption and robust mechanical properties.