Current Advances in Carotenoid Production by <i>Rhodotorula</i> sp.
2024
Nayra Ochoa-Viñals | Dania Alonso-Estrada | Sandra Pacios-Michelena | Ariel García-Cruz | Rodolfo Ramos-González | Evelyn Faife-Pérez | Lourdes Georgina Michelena-Álvarez | José Luis Martínez-Hernández | Anna Iliná
Microbial carotenoids are pigments of lipophilic nature; they are considered promising substitutes for chemically synthesized carotenoids in the food industry. Their benefits for human health have been demonstrated due to their antioxidant capacity. Yeasts of the genus <i>Rhodotorula</i> have genotypic characteristics that allow them to accumulate high concentrations of carotenes under certain stress conditions. The present review includes recent information covering different aspects of carotenoid production in <i>Rhodotorula</i> sp. fermentation. This review focuses on fermentation carotenoid production strategies, describing various economic raw materials as sources of carbon and nitrogen, the capacity for tolerance to heavy metals, and the effect of light, pH, and salts on the accumulation of carotenoids. Genetic modification strategies used to obtain strains with increased carotenoid production are described. Furthermore, using magnetic nanoparticles in the fermentation system, which could be a stress factor that increases pigment production, is considered for the first time. <i>Rhodotorula</i> is a potential source of high-value carotenoids with applications in the cosmetics, pharmaceutical, and food industries.
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