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<p>This study is the first to report the production, characterization, and technofunctional properties of exopolysaccharide (EPS) from the probiotic yeast <i>S. boulardii</i> S11 (<i>Sb</i>-EPS). HPLC analysis revealed that <i>Sb</i>-EPS has a heteropolysaccharide structure composed mainly of mannose and glucose. FT-IR and NMR analyses confirmed the polysaccharide structure of EPS. Rheological analysis showed that <i>Sb</i>-EPS exhibited non-Newtonian shear-thinning flow behavior. The EPS exhibited high antioxidant activity at a concentration of 4&#xa0;mg/mL, with more than 50% radical scavenging capacity for DPPH and ABTS, and 117.72 ± 2.54&#xa0;mg/mL for FRAP. Additionally, <i>Sb</i>-EPS demonstrated 90.11, 71.30, and 55.95% heavy metal adsorption capacities for Cu<sup>2</sup>⁺, Fe<sup>2</sup>⁺, and Zn<sup>2</sup>⁺, respectively. Furthermore, <i>Sb</i>-EPS’s ability to stimulate the growth of probiotic bacteria <i>L. rhamnosus</i> and <i>L. plantarum</i> to a greater extent than glucose and inulin suggests its potential as a prebiotic candidate. The findings indicate that <i>Sb</i>-EPS could be a promising, novel, and functional ingredient for food applications.</p>

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Production of exopolysaccharide from probiotic Saccharomyces cerevisiae var. boulardii S11 and determination of its structural, rheological, antioxidant and prebiotic properties

  • 期刊论文

  • 发表日期：

    2025年10月21日

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  • Hamza Goktas,
  • Cansu Agan,
  • Hatice Bekiroglu,
  • Fatih Bozkurt,
  • Osman Sagdic

摘要

This study is the first to report the production, characterization, and technofunctional properties of exopolysaccharide (EPS) from the probiotic yeast S. boulardii S11 (Sb-EPS). HPLC analysis revealed that Sb-EPS has a heteropolysaccharide structure composed mainly of mannose and glucose. FT-IR and NMR analyses confirmed the polysaccharide structure of EPS. Rheological analysis showed that Sb-EPS exhibited non-Newtonian shear-thinning flow behavior. The EPS exhibited high antioxidant activity at a concentration of 4 mg/mL, with more than 50% radical scavenging capacity for DPPH and ABTS, and 117.72 ± 2.54 mg/mL for FRAP. Additionally, Sb-EPS demonstrated 90.11, 71.30, and 55.95% heavy metal adsorption capacities for Cu2⁺, Fe2⁺, and Zn2⁺, respectively. Furthermore, Sb-EPS’s ability to stimulate the growth of probiotic bacteria L. rhamnosus and L. plantarum to a greater extent than glucose and inulin suggests its potential as a prebiotic candidate. The findings indicate that Sb-EPS could be a promising, novel, and functional ingredient for food applications.