Determination of illegal coal tar dye in "Hwamei"
One hundred and ninety three samples of syrupy fruits (44) and preserved fruits (149) were analyzed for coal tar dyes. Samples were assessed according to official methods and high performance liquid chromatography during a period from October 1993 to May 1994. The results confirmed that three "Hwamei" samples (1.6%) contained additives of orange R (C.I. acid orange 14, C.I. 16100) which violate the current approved standards. It also was identified as ponceau 2G. For identifying coal tar dyes, TLC was found to be a more sensitive method compared to PC, and HPLC was used to further confirm the results of TLC.
Su, S.-C.; Chen, B.-T.; Li, S.-C.; and Chou, S.-S.
"Determination of illegal coal tar dye in "Hwamei","
Journal of Food and Drug Analysis: Vol. 4
, Article 8.
Available at: https://doi.org/10.38212/2224-6614.2974