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 reg-
ulated 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.