FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (4): 189-192.doi: 10.7506/spkx1002-6630-201104041

• Analysis & Detection • Previous Articles     Next Articles

Determination of 5 Kinds of Illegally-added Colorants in Drink and Candy

SHAO Shi-ping,XI Xing-lin,CHEN Jie-zhen,LIANG Rui-ting   

  1. 1. Guangdong Inspection and Quarantine Technology Center, Guangzhou 510600, China ; 2. College of Public Health, Guangdong Pharmaceutical University, Guangzhou 510600, China
  • Online:2011-03-12 Published:2017-04-06

Abstract: A quantitative determination method for Brilliant Black PN, Fluorescein Sodium, Red 2G, Phloxine B and Rose Bengal in drink and candy was established using high performance liquid chromatography (HPLC). For sample preparation, extraction by polyamide adsorption and desorption with ethanol-ammonia solution-water (7:2:1, V/V) were carried out.  An ODS C18 column (250 mm × 4.6 mm, 5μm) was used for chromatographic separation, which was eluted with methanol-0.02 mol/L ammonium acetate aqueous solution as mobile phase at 35 ℃. The linear range of the developed method was 1.0-10.0 mg/L with relative standard deviation of 1.99%-5.95% and the detection limit was 1.0 mg/kg. The average recovery rates were 82.95%-95.43%. This method is simple, accurate, and suitable for the determination of these illegally-added colorants in drink and candy.

Key words: HPLC, brilliant black PN, fluorescein sodium, red 2G, phloxine B, rose bengal

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