Euglena gracilis, usually considered a ‘superfood,’ is a promising microalga with many well being and dietary advantages. In a latest examine, researchers discovered an environment friendly and low-resource strategy to set off a reddening response in E. gracilis utilizing pink mild and a bonito fish-based tradition medium. This response is an indication of upper and numerous carotenoid content material ratio, that means the proposed technique might assist flip E. gracilis into an much more nutritious meals supply.