Short Communication
Wang W, Du Y, Xiao Z, Li Y,
Abstract
Rhodamine B, an alkaline industrial dye, was forbidden in food due to its potential carcinogenicity to humans. However, some unscrupulous merchants often used it as a food colouring agent to dope chili oil. In this research, a microplate reader was utilized for rapid qualitative detection of rhodamine B in chili oil with the deep eutectic solvent which was comprised of choline chloride and ethylene glycol (mole ratio 1:3) as an extraction medium.