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Exopolysaccharides produced by Pediococcus acidilactici MT41-11 isolated from camel milk: Structural characteristics and bioactive properties.

  • 2021-08
  • International Journal of Biological Macromolecules 185
    • Ying Bai
    • Baolong Luo
    • Yan Zhang
    • Xu Li
    • Zhen Wang
    • Yuqing Shan
    • Min Lu
    • F. Tian
    • Yongqing Ni

Abstract

In this study, the chemical structure and bioactive properties of the EPS of Pediococcus acidilactici MT41-11 isolated from camel milk were investigated. Two polysaccharide fractions (EPS-1, EPS-2) with molecular weights about 69.0 kDa were obtained, which were purified using DEAE-Sepharose and Sephadex G-100 chromatography. Based on monosaccharide composition, FT-IR, and 1D, 2D NMR spectra, concluded that EPS-1 had a backbone composed of →2)-α-d-Manp-(1→, →3)-α-d-Manp-(1→ and with branches containing α-d-Manp-(1→, EPS-2 had a backbone composed of →6)-β-d-Glcp-(1→, and with branches containing →2)-α-l-Fucp-(1→, →3)-α-d-Glcp-(1→, →2)-α-d-Glcp-(1→, β-d-Glcp-(1→, and α-d-Glcp-(1→. Remarkably, in vitro assays showed that EPS possessed multiple bioactive properties, including stimulating Lactobacillus growth and a high DPPH free radical scavenging activity. Also, it has a good ability to anti-biofilms. Overall, the analysis of all data showed EPS from P. acidilactici MT41-11 can be used as anti-oxidant, anti-biofilm agent, and also as a potential candidate prebiotic for health food or medicine industry.

Keywords: Anti-biofilm activity; Anti-oxidant activity; Exopolysaccharides; Pediococcus acidilactici; Prebiotics.

Research Insights

SupplementHealth OutcomeEffect TypeEffect Size
Pediococcus acidilactici R1001Increased Antioxidant ActivityBeneficial
Large
Pediococcus acidilactici R1001Increased Lactobacillus GrowthBeneficial
Moderate
Pediococcus acidilactici R1001Reduced Biofilm FormationBeneficial
Moderate

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