Rapid detection of colorants in black tea using mid- and short-wave near infrared spectroscopy

-score values of (97.50%, 96.15%, 100.00%, 0.9804), (95.00%, 96.00%, 96.00%, 0.9600), and (97.50%, 96.15%, 100.00%, 0.9804) for tartrazine, sunset yellow, and ponceau 4R, respectively. These findings demonstrate the feasibility of using MS-NIR for the rapid and discriminative identification of colorants in black tea. In practical applications, discriminative detection can serve as an initial rapid screening tool, followed by more precise quantitative detection methods to determine colorant concentrations.