Journal
FOOD CHEMISTRY
Volume 362, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.130141
Keywords
Natural colors; Greener extraction; Stabilization; In-vitro; In-vivo studies
Funding
- Department of Science and Technology, Government of India
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Color plays a significant role in consumers' perception of food. The scientific community is increasingly focused on natural colorants as replacements for synthetic toxic ones. Green extraction techniques are being used to intensify processes and extract stable bioactive pigments. This article reviews the current literature on natural colorants and their applications in nutraceutical and pharmaceutical products.
Color is the prime attribute with a large impact on consumers' perception, selection, and acceptance of foods. However, the belief in bio-safety protocols, health benefits, and the nutritional importance of food colors had focused the attention of the scientific community across the globe towards natural colorants that serve to replace their synthetic toxic counterparts. Moreover, multi-disciplinary applications of greener extraction techniques and their hyphenated counterparts for selective extraction of bioactive compounds is a hot topic focusing on process intensification, waste valorization, and retention of highly stable bioactive pigments from natural sources. In this article, we have reviewed available literature to provide all possible information on various aspects of natural colorants, including their sources, photochemistry and associated biological activities explored under in-vitro and in-vivo animal and human studies. However a particular focus is given on innovative technological approaches for the effective extraction of natural colors for nutraceutical and pharmaceutical applications.
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