Rapid Qualitative Detection of Rhodamine B in Chili Oil by Deep Eutectic Solvent Extraction and a Microplate Reader

Abstract

Rhodamine B, an alk. industrial dye, was forbidden in food due to its potential carcinogenicity to humans. However, some unscrupulous merchants often used it as a food coloring agent to dope chili oil. In this research, a microplate reader was utilized for rapid qual. 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 extn. medium. [on SciFinder(R)]