ISSN: 0973-7510

E-ISSN: 2581-690X

Review Article | Open Access
Upal Das Ghosh
Department of Microbiology, Bidhannagar College, Kolkata, West Bengal, India.
Article Number: 10306 | © The Author(s). 2025
J Pure Appl Microbiol. 2025;19(2):941-959. https://doi.org/10.22207/JPAM.19.2.24
Received: 10 February 2025 | Accepted: 27 March 2025 | Published online: 21 May 2025
Issue online: June 2025
Abstract

Colours are being used in the food industry not only to increase the intensity of the physical appearance of food but also to protect it from oxidative and light-induced damage. In present food market, the acceptability of chemically synthesized food colour is gradually decreasing due to several health issues. So, the need for natural organic colours has flourished to the food industry. The advantage of using microbial colours in the food industry over other natural sources lies on their user-friendly and cost-effective handling conditions. This review assembles the details of different types of microbially originated colours used in the food industry and how to improve their industrial production. Pigments like riboflavin, melanin, chlorophyll, and phycobilins are widely used in the food industry for colouring purposes. The production of these pigments depends on various physiological and environmental factors. All categories of microorganisms like bacteria, algae, and fungi are industrially used for the production of microbial pigments. Impact of this article on research for societal benefits: Natural colours produced from different types of bacteria, algae, and fungi are now being commercialized for use in the bakery, confectionery, and beverage industries. In this review, we have discussed the varieties of microbial pigments currently being used in the food industry and their industrial production parameters with their related advantages and disadvantages. The projected modifications at the production level have also been discussed here. This detailed knowledge may help food industrialists as well as household cooks to select organic food colour with lesser health impact. This review gives the idea about the present position of microbial pigment in the food industry at a glance.

Keywords

Food Colour, Organic Colour, Pigmentation, Microbe

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© The Author(s) 2025. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.