Systems and methods for food safety detection
US7956997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2008 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Oct 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/656
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting an ingredient in a food product includes establishing a spectral signature in a Raman spectrum obtained from a chemical substance; allowing a food sample solution obtained from a food product to come to contact with a first nano-scale surface structure in a first sensor, wherein the first sensor comprises a substrate, wherein the nano-scale surface structure comprises a plurality of columns over the substrate or a plurality of holes in the substrate; illuminating the food sample solution and the first nano-scale surface structure on the first sensor by a laser beam; scattering the laser beam by the food sample solution and the first nano-scale surface structure to produce a scattered light; obtaining a first Raman spectrum from the scattered light using a spectral analyzer; and identifying the spectral signature in the first Raman spectrum to determine the existence of the chemical substance in the food product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.