Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Improved Bioactivity of 3-O-β-ᴅ-Glucopyranosyl Platycosides in Biotransformed Platycodon grandiflorum Root Extract by Pectinase from Aspergillus aculeatus

  • Ju, Jung-Hun (Department of Bioscience and Biotechnology, Konkuk University) ;
  • Lee, Tae-Eui (Department of Bioscience and Biotechnology, Konkuk University) ;
  • Lee, Jin (Department of Bioscience and Biotechnology, Konkuk University) ;
  • Kim, Tae-Hun (Department of Bioscience and Biotechnology, Konkuk University) ;
  • Shin, Kyung-Chul (Department of Bioscience and Biotechnology, Konkuk University) ;
  • Oh, Deok-Kun (Department of Bioscience and Biotechnology, Konkuk University)
  • Received : 2021.02.22
  • Accepted : 2021.04.12
  • Published : 2021.06.28
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Abstract

Platycodon grandiflorum (balloon flower) root (Platycodi radix, PR) is used as a health supplement owing to its beneficial bioactive properties. In the present study, the anti-inflammatory, antioxidant, and whitening effects of deglycosylated platycosides (saponins) from PR biotransformed by pectinase from Aspergillus aculeatus were investigated. The bioactivities of the platycosides improved when the number of sugar moieties attached to the aglycone platycosides was decreased. The deglycosylated saponins exhibited higher lipoxygenase inhibitory activities (anti-inflammatory activities) than the precursor platycosides and the anti-inflammatory compound baicalein. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity of the pectinasetreated PR extract was higher than that of the non-treated PR extract. The trolox-equivalent antioxidant capacity (TEAC) assay showed improved values as the saponins were hydrolyzed. The tyrosinase inhibitory activities (whitening effects) of deglycosylated platycosides were higher than those of the precursor platycosides. Furthermore, 3-O-β-ᴅ-glucopyranosyl platycosides showed higher anti-inflammatory, antioxidant, and whitening activities than their precursor glycosylated platycosides. Therefore, 3-O-β-ᴅ-glucopyranosyl platycosides may improve the beneficial effects of nutritional supplements and cosmetic products.

Keywords

Acknowledgement

This study was supported by the Ministry of Trade, Industry & Energy (MOTIE) and the Korea Institute for Advancement of Technology (KIAT) through the Encouragement Program for the Industries of Economic Cooperation Region (P0006057) and the Konkuk University Researcher Fund in 2019.

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