Raman spectra of Sudan red dyes and the fluorescence background removal
Sudan red dyes, as illegal food additives, can induce carcinoma of bladder. It is important to find out a method to provide an easy, precise and sensitive detection. The aim of our study is to obtain the Raman feature frequency excursion of Sudan Ⅰ, Ⅱand Ⅲ, and draw clear Raman spectra. We used the Raman Systems R-3000 spectrometer to detect the solid Sudan Ⅰ(97.5%), Ⅱ(analytical pure) and Ⅲ(97.0%). Furthermore, we removed the fluorescence background via curve fitting. The Raman spectrograms show that wave peak of Sudan Ⅰappears on 458, 718, 990, 1091, 1163, 1224, 1335, 1385, 1450, 1492, 1593cm-1, peak of Sudan Ⅱappears on 454, 708, 982, 1225, 1378, 1492, 1602cm-1, and peak of Sudan Ⅲ appears on 456, 716, 981, 1127, 1227, 1383, 1415, 1437, 1492, 1591cm-1. In conclusion, Raman spectroscopy is an ideal measure to provide qualitative analysis of Sudan red dyes. And the results can help us to evaluate the food quality and safety.
Chen Chen Peng Fei Cheng Qinghua Xu Dahai
School of Physical Science and Technology, Yangtze University,Jingzhou, China Wuhan National Laborat Department of Orthopedic Surgery, Tongji Hospital, Huazhong University of Science and Technology Wuh School of Physical Science and Technology, Yangtze University,Jingzhou, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）