Abstract
Production of oligosaccharides from Leuconostoc lactis CCK940 was optimized using a response surface methodology with a central composite design. Culture temperature and the concentrations of sucrose and maltose were used as the main factors. The predicted optimum conditions for the production of oligosaccharides were a culture temperature of 30 °C, a sucrose concentration of 9.6% (w/v), and a maltose concentration of 7.4% (w/v). Using these optimal conditions, Leuconostoc lactis CCK940 was cultured using a fermenter to produce oligosaccharides, and the resulting oligosaccharides with a degree of polymerization greater than 4 were purified by Bio-gel P2 gel permeation column chromatography and then lyophilized. When macrophages were treated with the purified oligosaccharides at concentrations of 0.1⁻10 mg/mL, no cytotoxicity towards the macrophages was observed. However, nitric oxide production levels were similar to those following treatment with 1 μg/mL lipopolysaccharide. The mRNA expression levels of tumor necrosis factor-α, interleukin-1β, interleukin-6, and inducible nitric oxide synthase were all also increased in a dose-dependent manner following treatment with the oligosaccharides. These data suggest that oligosacchari...Continue Reading
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Nov 7, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sulhee LeeYoung-Seo Park
Nov 7, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sulhee LeeYoung-Seo Park
Aug 20, 2019·International Journal of Biological Macromolecules·Dan ZhaoJingping Ge
Jan 23, 2021·Microorganisms·Minhui KimYoung-Seo Park