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International Journal of Medicinal Mushrooms
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ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushr.v15.i2.70
pages 183-189

Production of Extracellular Polysaccharides by the Medicinal Mushroom Trametes trogii (Higher Basidiomycetes) in Stirred-Tank and Airlift Reactors

Chunping Xu
College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, China; Collaborative Innovation Center of Food Production and Safety, Zhengzhou, Henan, China
Lujing Geng
College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, 450002, P.R. China
Wenye Zhang
College of Food and Biological Engineering, Zhengzhou University of Light Industry, Henan, China

RÉSUMÉ

Extracellular polysaccharides (EPSs) produced by submerged culture of Trametes trogii exhibit antioxidant and antitumor activities. In this study, mycelial growth and EPS production of T. trogii were investigated using optimal culture conditions (maltose [53.12 g/L] and polypeptone [4.21 g/L] in distilled water) in a 5-L jar fermenter. Maximum biomass growth (10.81 g/L) occurred after 5 days of cultivation, whereas maximal EPS yield (1.86 g/L) was achieved after 5 days in a 5-L stirred-tank reactor. Furthermore, the morphological parameters (i.e., mean diameter, circularity, roughness, and compactness) of the pellets and the viscosity of the broth were characterized. It was proved that the compactness of the pellets were significantly positively correlated with EPS content.


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