Inkjet printing of functionalized silk proteins for enhanced stability and colorimetric bacterial sensing applications

We present the use of functionalized silk proteins for enhanced stability of biochemically active agents (e.g. horseradish peroxidase) in printed silk materials without the need of refrigeration storage. Direct printing of polydiacetylene vesicles conjugated with goat IgG antibody in printed silk materials for colorimetric detection of E. coli. has also been demonstrated.