Issue 12, 2021

Multi-colored shades of betalains: recent advances in betacyanin chemistry


Covering: 2001 to 2021

Betacyanins cover a class of remarkable natural red-violet plant pigments with prospective chemical and biological properties for wide-ranging applications in food, pharmaceuticals, and the cosmetic industry. Betacyanins, forming the betalain pigment group together with yellow betaxanthins, have gained much attention due to the increasing social awareness of the positive impact of natural products on human health. Betalains are commercially recognized as natural food colorants with preliminarily ascertained, but to be further investigated, health-promoting properties. In addition, they exhibit a remarkable structural diversity based on glycosylated and acylated varieties. The main research directions for natural plant pigments are focused on their structure elucidation, methods of their separation and analysis, biological activities, bioavailability, factors affecting their stability, industrial applications as a plant-based food, natural colorants, drugs, and cosmetics as well as methods for high-yield production and stabilization. This review covers period of the last two decades of betacyanin research. In the first part of the review, we present an updated classification of all known betacyanins and their derivatives identified by chemical means as well as by mass spectrometric and NMR techniques. In the second part, we review the current research reports focused on the chemical properties of the pigments (decarboxylation, oxidation, conjugation, and chlorination reactions as well as the acyl group migration phenomenon) and describe the semi-synthesis of natural and artificial fluorescent betalamic acid conjugates, showing various prospective research directions.

Graphical abstract: Multi-colored shades of betalains: recent advances in betacyanin chemistry

Article information

Article type
Review Article
13 Mar 2021
First published
13 Sep 2021
This article is Open Access
Creative Commons BY license

Nat. Prod. Rep., 2021,38, 2315-2346

Multi-colored shades of betalains: recent advances in betacyanin chemistry

A. Kumorkiewicz-Jamro, T. Świergosz, K. Sutor, A. Spórna-Kucab and S. Wybraniec, Nat. Prod. Rep., 2021, 38, 2315 DOI: 10.1039/D1NP00018G

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