Biological activities and health benefits of sodium alginate: A review
2025
Xinru Li | Yi Qiao | Hui Liu
Sodium alginate (SA) is a natural polysaccharide and dietary fiber extracted from brown algae, which has been proven to confer a variety of health benefits following consumption. This review focuses on recent advances in the biological activity of SA, examining its immunomodulatory effects, potential anti-cancer properties, antioxidant activity, regulation of blood glucose levels, role in obesity management, anti-inflammatory capacity, support for gastrointestinal health, and applications in the medical field. Meanwhile, the mechanisms underlying these activities are also discussed, with an emphasis on the impact on metabolic pathways and the interaction with the gut microbiota. The overall objective of this review is to provide a comprehensive assessment of SA's biological activities, identify areas that require further investigation, and deepen the understanding of the relationship between experimental results and practical applications. This will ultimately facilitate the translation of SA-related research into practical health promotion strategies.
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