Method and detection system for detection of aflatoxin in corn with fluorescence spectra
US8563934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2010 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | May 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6423
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for fluorescence spectral imaging of target material to detect the presence of a contaminant (such as aflatoxin in corn) is provided. An ultraviolet light source is coupled with a light-excluding compartment. The fluorescence from the UV excited target passes through a filter (liquid crystal tunable, acoustic-optic tunable, a filter wheel, or other wavelength splitting device) and a lens, to a spectral imaging camera. Fluorescence spectral image data from the camera are analyzed by a computer and presented in human-readable form. Aflatoxin detection in contaminated corn kernels is based on peak fluorescence and peak fluorescence shift in the spectral range from 451 nm to 500 nm. Aflatoxin contamination level within the target material is quantified based on peak fluorescence and peak fluorescence shift and computed corn kernel pixel statistics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.