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Apparatus and method of monitoring an analyte

Imported: 24 Feb '17 | Published: 10 Jun '03

Donald F. H. Wallach

USPTO - Utility Patents

Abstract

A detector for monitoring an analyte includes an analyte-sensing composition. The analyte-sensing composition has a visible color intensity or emission intensity (e.g., fluorescence intensity) that changes as the analyte concentration contacting the detector changes. The intensity changes can be visible to the human eye, or identified by an instrument. The analyte can include carbon dioxide, a volatile amine or a volatile carboxylic acid.

Description

DESCRIPTION OF DRAWINGS

FIG. 1 is a cross-sectional drawing depicting a detector.

FIG. 2 is a cross-sectional drawing depicting a detector on the inside of a compartment.

FIG. 3 is a cross-sectional drawing depicting a detector adhered to the outside of a package.

FIG. 4 is a cross-sectional drawing depicting a detector arranged in a wall of a container.

FIG. 5 is a cross-sectional drawing depicting a detector in tubular form.

Claims

1. A method of detecting an analyte comprising:

2. The method of claim 1, wherein monitoring includes detecting the change with an instrument.

3. The method of claim 1, wherein the analyte includes carbon dioxide, a volatile amine or a volatile carboxylic acid.

4. The method of claim 1, wherein the detector is a portion of a food package or a hygiene product.

5. The method of claim 1, wherein the presence of the analyte changes the pH within the carrier.

6. The method of claim 1, further comprising removing the detector from a sealed package prior to contacting the food product, body fluid or tissue.