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Review evaluates recent advances in vitamin B12 production, highlighting biotechnology's role in sustainability.
corrinoid biosynthesis, and the integration of waste-derived substrates into scalable systems. This review critically integrates recent advances in vitamin B12 bioproduction, focusing on genetic and metabolic engineering strategies that reconfigure the pathways, optimize precursor availability, and redirect metabolic flux toward cobalamin synthesis. Methodological developments in controlled fermentation, downstream purification, and bioavailability assessment, including intestinal uptake mechanisms, are evaluated to identify persistent technological gaps. Particular emphasis is placed on multi-actor approaches that couple microbial biotechnology with food processing and the valorization of agro-industrial by-products, thereby enabling cost-effective production aligned with circular bioeconomy principles. By consolidating mechanistic insights, engineering innovations, and sustainability-driven process integration, this review delineates emerging opportunities for industrial-scale manufacturing of natural vitamin B12 and highlights future research directions needed to enhance yield, functionality, and applicability in health-promoting foods.
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Calinoiu et al. (2026) studied this question.
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