Patent ID: 7115229

Claim:
An apparatus for analyzing at least one unlabelled biomolecule selected from the group consisting of protein, lipid, carbohydrate and nucleic acid, during a reaction process, by monitoring volatile compounds directly in-situ within a gas or vapor phase medium from the reaction, comprising: a multisensor array capable of detecting and discriminating more than one physico-chemical change of a gas or vapor phase of an unlabelled biomolecule or a product thereof, directly from the medium in-situ wherein the multisensor array comprises at least one metal oxide semiconductor; transmission means, capable of transmitting a signal between the multisensor array and a data acquisition system, capable of converting the signal into raw data; a computational device capable of processing at least part of the raw data using multivariate analysis to create a data set; and an output device capable of displaying, storing, or using the data set.