Agri-food waste biomass is the most abundant organic waste and has high valorisation potential
for sustainable bioproducts development. These wastes are not only recyclable in nature but are
also rich sources of bioactive carbohydrates, peptides, pigments, polyphenols, vitamins, natural antioxidants,
etc. Bioconversion of agri-food waste to value-added products is very important towards zero
waste and circular economy concepts. To reduce the environmental burden, food researchers are
seeking strategies to utilize this waste for microbial pigments production and further biotechnological
exploitation in functional foods or value-added products. Microbes are valuable sources for a range of
bioactive molecules, including microbial pigments production through fermentation and/or utilisation
of waste. Here, we have reviewed some of the recent advancements made in important bioengineering
technologies to develop engineered microbial systems for enhanced pigments production using agrifood
wastes biomass/by-products as substrates in a sustainable way.
Keywords: Agri-food waste, fermentation, microbial pigments, bioengineering, engineered microbes, waste biomass.
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