Composites of silica with immobilized cholinesterase incorporated into polymeric shell

Table 1 Activity of native and immobilized cholinesterases

Sample	Enzyme activity, unit ^a /mg
Liver homogenate of the Gallus gallus	1.15 ± 0.04
ACHE from electric eel	1.88 ± 0.09
1. Sol-gel, liver homogenate of the Gallus gallus	1.27 ± 0.05
2. Sol-gel, ACHE from electric eel	2.15 ± 0.01
3. A300, homogenate of the liver of Gallus gallus	1.49 ± 0.01
4. A300, ACHE from electric eel	2.25 ± 0.03

^aUnit definition: One unit will hydrolyze 1.0 μmol of acetylcholine to choline and acetate per minute at pH 8.0 at 37°C [9].