Betalains and their applications in food: The current state of processing, stability and future opportunities in the industry

Highlights • Several fruits, plants, and roots are sources of betalains.• Betalains analysis can be performed by spectroscopic and chromatographic methods.• Betalains extraction techniques have advantages and disadvantages.• Betalains encapsulation increases its stability and possibility of incorporation in foods.• The incorporation of betalains in food packaging is a potential application.