4.6 Article

Elucidation of physicochemical properties of polysaccharides extracted from Cordyceps militaris fruiting bodies with different drying treatments and their effects on ulcerative colitis in zebrafish

Journal

FRONTIERS IN NUTRITION
Volume 9, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fnut.2022.980357

Keywords

Cordyceps militaris; polysaccharides; drying method; ulcerative colitis; zebrafish

Funding

  1. National Natural Science Foundation of China General Fund Project
  2. Key Scientific and Technological Innovation Team of Edible Fungi of Shanxi Province
  3. [32072647]
  4. [201805D131009]

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This study analyzed the effects of different drying treatments on the physicochemical properties of Cordyceps militaris polysaccharides and further investigated their therapeutic effects on ulcerative colitis in zebrafish. The results showed that the polysaccharides had distinct properties and regulation effects depending on the drying method. Additionally, the study found that the polysaccharides could improve ulcerative colitis by activating specific signaling pathways.
Dry fruiting bodies of Cordyceps militaris (CMF) have been widely used in folk tonic foods and traditional herbal medicine in East Asia. Drying treatment serves as the last step in CMF industrial processes. In this work, the physicochemical properties of polysaccharides from C. militaris fruiting bodies (CMFPs) with hot air drying (HD), far-infrared radiation drying (ID) and vacuum freeze-drying (FD) treatments were analyzed, and their effects on ulcerative colitis (UC) were further investigated in oxazolone-induced zebrafish. The results showed that physicochemical properties of CMFP-H, CMFP-I and CMFP-F were obvious different. CMFPs could repair the intestinal mucosal barrier, inhibit ROS generation and the activities of MDA and MPO, and improve the activities of SOD, CAT, ACP, AKP and LZM. Further detection indicated that CMFPs could better improve UC via activating the MyD88/NF-kappa B signaling pathway in vivo. However, CMFP-H, CMFP-F and CMFP-I exhibited diverse regulation effects on specific immune-related enzymes and cytokines. The data would be helpful for finding practical and rapid drying methods for macro-fungi and further exploring CMFPs as functional food ingredients or complementary medicines for the treatments of UC.

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