Monitoring of frying oil quality using combined optical interrogation methods and devices
US8257976B2 · kind B2 · utility
7Cited by
15References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2009 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Jul 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Herein are disclosed methods and devices for optically monitoring multiple parameters of an oil sample. In one embodiment, the methods and devices can be used for determining the quality of cooking or flying oil in terms of the free fatty acid content and total polar compound content of the oil. The methods use an optical absorbtive/reflective property in evaluating the free fatty acid content, and use optical fluorescence in evaluating the total polar compound content, with both measurements using a single sampling substrate and a single measuring device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.