Abstract
Functional foods have been developed as a response to the demands from modern society for a heathy life style. In this way, synthetic colorants have been replaced by natural counterparts. The potential use of several natural pigments such as anthocyanins, betalains, carotenoids, annatto, β-carotene, lycopene, lutein, paprika, carminic acid, chlorophylls, and curcumin as food colorants have been explored in recent years. These pigments can be used to impart different colors in foods such as red, pink, orange, blue, green, and yellow, among others. Most of these natural colorants can be isolated from vegetal sources, with exception of lutein which can be also isolated from animal sources. However, natural pigments are sensitive to heat, oxygen, and light, as well as to modifications of pH, limiting their use as food colorants. This chapter reviews the state of the art with regard to the sources and properties of natural colorants, as well as their food applications.
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The author declares no conflict of interest.
Acknowledgments
B.L. Koop and A.G. Maciel gratefully acknowledge the Coordination for the Improvement of Higher Education Personnel (CAPES) for their doctoral fellowships. G.A. Valencia would like to thank the Fundação de Amparo à Pesquisa e Inovação do Estado de Santa Catarina (FAPESC) (grants 2021TR000418 and 2021TR001887). The authors gratefully acknowledge the Federal University of Santa Catarina (UFSC) for its support.
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Koop, B.L., Maciel, A.G., Soares, L.S., Monteiro, A.R., Valencia, G.A. (2023). Natural Colorants. In: Valencia, G.A. (eds) Natural Additives in Foods. Springer, Cham. https://doi.org/10.1007/978-3-031-17346-2_4
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