Abstract
Spirulina is widely known as the “Super Nutritious Food of the Future” due to its exceptional nutritional properties. In this article, we investigated the effects of fermentation using a combination of Lactobacillus acidophilus KDB-03 and Kluyveromyces marxianus GDMCC 2.119 on Spirulina. Fermentation significantly increased the total flavonoid and phenol levels in Spirulina, and enhanced the 2,2-diphenyl-1-picrylhydrazyl free radical scavenging capacity and ferric-reducing antioxidant power. Untargeted ultra-performance liquid chromatography-electrospray tandem mass spectrometry-based metabolomics and gas chromatography-ion mobility spectrometry analysis revealed alterations in the metabolites and flavor components of fermented Spirulina (FS). Furthermore, a mice experiment demonstrated that FS could effectively alleviate metabolism-associated fatty liver disease (MAFLD) by regulating liver metabolism, intestinal flora, and facilitating communication between the liver and gut. These findings suggest that fermentation could be a innovative approach to enhance the diversity of Spirulina products, and potentially be used as a strategy for the prevention and treatment of MAFLD.
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