|
|
Article: Recent findings in chromatography described by H. Kandler and colleagues.
- Article from:
- Medical Devices & Surgical Technology Week
- Article date:
- June 7, 2009
CopyrightCOPYRIGHT 2009 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
According to recent research from Muttenz, Switzerland, "For screening large numbers of samples of spice and spice mixtures for the presence of illegal dyes a rapid high performance thin layer chromatography (HPTLC) method was developed and validated. From paprika, chili, or curry powder, dyes are extracted with acetonitrile."
"An aliquot of the raw extract is filtered and treated with iron(III) chloride to oxidize the natural dyes. After evaporation to dryness, the residue is taken up with basic dichloromethane, cleaned through a solid phase extraction cartridge containing silica gel, and evaporated again. The purified extract is dissolved in acetonitrile, ...