Patent ID: 7267989

Claim:
A method for measuring sulfur compound and/or ammonia with a peptide compound, wherein the peptide compound comprises a peptide sequence selected from the group consisting of: Gly-Asn-Thr-Tyr-Asp (SEQ ID NO:1), Glu-Gly-Asn-Thr-Tyr-Asp (SEQ ID NO:2), Lys-Phe-Lys-Glu-Val (SEQ ID NO:3), Glu-Ser-Lys-Val-Tyr (SEQ ID NO :4), Asp-Val-Asn-Tyr-Gly-Asn (SEQ ID NO:5), Lys-Phe-Lys-Glu-Val-Thr-Arg-Glu-Asn (SEQ ID NO:6), and mixtures thereof; wherein the sulfur compound is a compound having a functional group of —R—SH, wherein the R is an alkyl or aryl group; and the method comprises the steps of: contacting an analyte with at least one peptide compound coated on a sensory device to produce a signal; and processing the signal to produce a result by comparing the result with a database.