Detection device and methods of use thereof
A device for the detection of a food allergen includes a sensor having a printed circuit board and a chip comprising a molecularly imprinted polymer (MIP) and a non-imprinted polymer (NIP); a reservoir comprising a liquid; and a chamber for mixing the liquid with a food.
1 . A portable food allergen and/or ingredient detection system comprising:
a portion comprising a body, wherein the body comprises
a reservoir comprising a liquid,
a chamber for mixing the liquid with a food sample, and
a sensor, the sensor comprising
a first chip comprising a molecularly imprinted polymer layer comprising receptor sites imprinted in a first surface of the polymer, the receptor sites configured to accept a trace molecule of the food allergen and/or ingredient; and
a second chip comprising a non-imprinted polymer layer, wherein the non-imprinted polymer layer is not imprinted with receptor sites,
wherein the first chip detects the presence of the trace molecule upon binding to one or more of the receptor sites on the molecularly imprinted polymer,
wherein a first portion of the sensor containing the first and second chips is in contact with the reservoir, and a second portion of the sensor is outside of the body; and
a re-usable processing device portion which communicatively couples to the second portion of the sensor outside of the body to determine the presence of the food allergen and/or ingredient by determining a response difference between a response of the molecularly imprinted polymer layer and a response of the non-imprinted polymer layer in the presence of the food allergen and/or ingredient.
2 . The device of claim 1 , wherein the response is determined by electrochemical means.
3 . The device of claim 2 , wherein the electrochemical means is voltammetry or amperometry.
4 . The device of claim 1 , wherein the response is determined by 2-point resistance measurements, 4-point resistance measurements, conductivity, or capacitance.
5 . The device of claim 1 , wherein the re-usable processing device is a wearable device.
6 . The device of claim 1 , wherein the reservoir comprises a capsule that encapsulates a solvent; and a chamber for mixing the solvent with food.
7 . The device of claim 1 , wherein the trace molecule of the food allergen is an organic molecule.
8 . The device of claim 7 , wherein the organic molecule has a molecular weight of less than about 900 Daltons.
9 . The device of claim 7 , wherein the organic molecule has a molecular weight of less than about 500 Daltons.
10 . The device of claim 7 , wherein the organic molecule is selected from lactose, galactose, amygdalin, juglone, biochanin A, resveratrol, daidzein, daidzin, genistein, and genistin.
11 . The device of claim 7 , wherein the molecule of the food allergen is a polypeptide, epitope, aptamer, or protein.
12 . The device of claim 7 , wherein the food sample is a foodstuff.
13 . The device of claim 12 , wherein the foodstuff is a solid foodstuff.
14 . The device of claim 1 , wherein the food allergen is from almond, cashew, artificial nuts, beech nut, Brazil nut, bush nut, butternut, shea nut, pili nut, caponata, pecan, hickory nut, chinquapin, chestnut, coconut, filbert, gianduja, ginkgo nut, heartnut, hazelnut, Indian nut, lichee nut, macadamia nut, mandelonas, marzipan, meshuga nut, nangi nut, nougat, pecan, Pigñolia nut, pistachio, praline, or walnut.
15 . The device of claim 1 , wherein the food allergen is a peanut allergen, a tree nut allergen, a milk allergen, an egg allergen, a wheat allergen, a soy allergen, a meat allergen, a fish allergen, a shellfish allergen, a coconut allergen, or a combination thereof.
16 . The device of claim 1 , wherein the food allergen is a flavonoid, an amygdalin, or a combination thereof.
17 . The device of claim 16 , wherein the flavonoid is an isoflavone, an isoflavonone, an isoflavan, a pterocarpan, a rotenoid, or a combination thereof.