. Author manuscript; available in PMC: 2010 May 11.

Published in final edited form as: Biomacromolecules. 2009 May 11;10(5):1032–1042. doi: 10.1021/bm800956n

Table 2.

Enzyme activity in different solutions stored at room temperature

Enzyme	Solution	Concentration	Half-life (days)	R²
GOx	−20°C in PBS buffer	10 mg/ml	366	0.971
	PBS buffer	10 µg/ml	14.4	0.933
	10 mg/ml Silk solution	10 µg/ml	877	0.991
	1 mg/ml silk solution	10 µg/ml	74.2	0.990
HRP	PBS buffer	0.1 µg/ml	0.115	0.902
	100 µg/ml Silk solution	0.1 µg/ml	25.4	0.982
	10 µg/ml Silk solution	0.1 µg/ml	25.4	0.983
	PBS buffer at 4°C	60 µg/ml	39.8	0.991
	60 mg/ml Silk solution at 4°C	60 µg/ml	44.1	0.982
Lipase	PBS buffer	250 µg/ml	15.8	0.941