Solvatochromatic bacterial detection
US7282349B2 · kind B2 · utility
5Cited by
42References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2003 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Feb 8, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/04
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Solvatochromic dyes are used herein to indicate the presence of bacteria by incorporating them into various substrates such as films, woven and nonwoven fabrics, paper towels, coform and airlaid materials and bonded carded webs. These dyes change color in response to a change in polarity of the environment. Since water is a polar solvent and most bacteria are made from non-polar substances, the presence of bacteria changes the polarity of the environment, triggering a change visible by the unaided eye. A lateral flow device incorporating solvatochromic dyes and a method of detecting bacteria are also included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.