Immunomodulatory and antioxidant potential of Lactobacillus exopolysaccharides

Chin Feng Liu, Kuo Chuan Tseng, Shen Shih Chiang, Bao Hong Lee, Wei-Hsuan Hsu, Tzu Ming Pan

Research output: Contribution to journalArticlepeer-review

152 Citations (Scopus)


BACKGROUND: Immunomodulation by probiotic microorganisms has become a topic of increasing interest in food microbiology. Polysaccharides are broadly used in the food industry as gelling, thickening, stabilizing, or emulsifying agents. Some probiotics such as lactic acid bacteria also produce exopolysaccharides that stimulate macrophage production of cytokines. The aim of this study was to characterize the effects of exopolysaccharides of Lactobacillus paracasei subsp. paracasei NTU 101 (101EP) and Lactobacillus plantarum NTU 102 (102EP) exopolysaccharides on antioxidant activity and immunomodulation in vitro. RESULTS: The sugar composition (including arabinose, galactose, glucose, fructose, mannose, and maltose) of 101EP and 102EP was quantified by high-performance anion-exchange chromatography. Cytokine production (including IL-6, TNF-α, and IL-1β) was induced by 101EP and 102EP in Raw 264.7 in a dose-dependent manner (5-500 μg mL -1). 101EP and 102EP also demonstrated potential antioxidant properties (1,1-diphenyl-2-picrylhydrazyl radical scavenging activity, chelation of ferrous ions, inhibition of linoleic acid peroxidation, and reducing power) in vitro. CONCLUSION: 101EP and 102EP stimulate cell proliferation and may be useful as a mild immune modulator of macrophages.

Original languageEnglish
Pages (from-to)2284-2291
Number of pages8
JournalJournal of the Science of Food and Agriculture
Issue number12
Publication statusPublished - 2011 Sep 1

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Food Science
  • Agronomy and Crop Science
  • Nutrition and Dietetics


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