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Green-to-red transformation of Euglena gracilis using bonito stock and intense red light - EurekAlert

<p><em>Euglena gracilis</em>, often regarded as a &ldquo;superfood,&rdquo; is a promising microalga with many health and nutritional benefits. In a recent study, researchers from Japan found an efficient and low-resource approach to trigger a reddening reaction in <em>E. gracilis</em> using red light and a bonito fish-based culture medium. This reaction is a sign of higher and diverse carotenoid content ratio, meaning the proposed method could help turn <em>E. gracilis</em> into an even more nutritious food source.</p>

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