Wednesday, April 20, 2011

US Patent 7927651 - MSG sensor formed from nanowires

This patent is based on research conducted in South Korea indicating that silicon or carbon nanowires can be used to improve the sensitivity of biosensors for detecting the food additive MSG. Claim 1 reads:

1. A method for manufacturing a biosensor for detecting glutamate, comprising the steps of:

integrating nano wires on a surface of a solid substrate;

coating electrodes with a polymer after forming the electrodes at both ends of each of the nano wires;

adhering a functional group on the surface of the solid substrate between the nano wires;

adhering glutaraldehyde to the functional group on the surface of the solid substrate; and

immobilizing glutamate oxidase, which is capable of being bound to monosodium glutamate and catalyze the oxidative reaction of glutamate, to glutaraldehyde.

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