Methods for the analysis of azo dyes employed in food industry – A review

•Methods for the analysis of azo dyes for coloring food have been reviewed in detail.•We discussed extractions of azo dyes from various food matrices.•This review is mainly useful for the researchers and in food industries as a quality control tool. A wide variety of azo dyes are generally added for...

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Bibliographic Details
Published in:Food chemistry Vol. 192; pp. 813 - 824
Main Authors: Yamjala, Karthik, Nainar, Meyyanathan Subramania, Ramisetti, Nageswara Rao
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01.02.2016
Subjects:
aesthetics
analytical methods
Azo Compounds - analysis
Azo Compounds - chemistry
Azo dyes
Chromatography, Liquid - methods
exports
Extraction
food availability
food coloring
Food Industry
Food matrices
food safety
foods
LC–MS/MS
Mass Spectrometry - methods
monitoring
Amaranth (PubChem CID: 5359521)
Ponceau 4R (PubChem CID: 54604869)
Brilliant Black BN (PubChem CID: 5359750)
Tartrazine (PubChem CID: 164825)
Azo dyes
LC–MS/MS
LitholRubine BK (PubChem CID: 9571018)
Citrus Red 2 (PubChem CID: 9570225)
Brown HT (PubChem CID: 9570176)
Carmoisine (PubChem CID: 6321394)
Food matrices
Extraction
Allura Red (PubChem CID: 5360805)
Sunset Yellow FCF (PubChem CID: 6850717)
ISSN:0308-8146, 1873-7072
Online Access:Get full text
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Summary:•Methods for the analysis of azo dyes for coloring food have been reviewed in detail.•We discussed extractions of azo dyes from various food matrices.•This review is mainly useful for the researchers and in food industries as a quality control tool. A wide variety of azo dyes are generally added for coloring food products not only to make them visually aesthetic but also to reinstate the original appearance lost during the production process. However, many countries in the world have banned the use of most of the azo dyes in food and their usage is highly regulated by domestic and export food supplies. The regulatory authorities and food analysts adopt highly sensitive and selective analytical methods for monitoring as well as assuring the quality and safety of food products. The present manuscript presents a comprehensive review of various analytical techniques used in the analysis of azo dyes employed in food industries of different parts of the world. A brief description on the use of different extraction methods such as liquid–liquid, solid phase and membrane extraction has also been presented.
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ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2015.07.085