Apparatus and method of monitoring an analyte
First Claim
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1. A method of detecting an analyte comprising:
- contacting a detector with a food product, body fluid or tissue, the detector including;
a carrier;
an analyte-sensing composition including an indicator dye, a buffer, and an osmotic control agent, the analyte-sensing composition being contained by the carrier;
a hydrophobic barrier on one surface of the carrier, and the buffer and indicator dye are present in a molar ratio of between 20 and 200 the hydrophobic barrier being arranged to contact the food product, body fluid or tissue, and an outer barrier covering a surface of the carrier opposite the hydrophobic barrier; and
monitoring the detector for a change in visible color intensity or emission intensity from the indicator dye which indicates the presence of the analyte.
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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.
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Citations
6 Claims
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1. A method of detecting an analyte comprising:
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contacting a detector with a food product, body fluid or tissue, the detector including;
a carrier;
an analyte-sensing composition including an indicator dye, a buffer, and an osmotic control agent, the analyte-sensing composition being contained by the carrier;
a hydrophobic barrier on one surface of the carrier, and the buffer and indicator dye are present in a molar ratio of between 20 and 200 the hydrophobic barrier being arranged to contact the food product, body fluid or tissue, and an outer barrier covering a surface of the carrier opposite the hydrophobic barrier; and
monitoring the detector for a change in visible color intensity or emission intensity from the indicator dye which indicates the presence of the analyte. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification