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Food Colorants

Food colorant is used in many common beverages and food. Colorants are widely used in food manufacturing to attract consumers because colorants can improve first sensory quality. Both natural and synthetic colors are permitted to be added to processed food at certain limits.


How SIG can help

SIG laboratory has been accredited with ISO 17025:2017 and also continues to follow international proficiency testing for food colorants so as to ensure the quality of testing.

The types of food colorants that can be tested in the SIG laboratory are:

Synthetic colors testing:

  • Qualitative Test
  • Allura red
  • Brilliant blue
  • Brilliant green
  • Brown HT
  • Carmoisine
  • Crystal violet
  • Erythrosine
  • Indigo carmine
  • Indigotine
  • Leuco crystal violet
  • Leuco malachite green
  • Malachite green
  • Metanil yellow
  • Ponceau 4R
  • Quinoline yellow
  • Rhodamine B
  • Sudan (I, II, III, IV)
  • Sunset Yellow
  • Tartrazine


Natural colors:

  • Annatto bixin
  • Annatto norbixin
  • Anthocyanin
  • Carotene
  • Total carotene
  • Curcumin
  • Carmine
  • Titanium Dioxide


Method of analysis

SIG is a laboratory expert for the analysis of food colorants. Analysis of a wide range of food colorants using HPLC-PDA.

Library of Knowledge

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