Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Antibiotic Effect of Leaf, Stem, and Root Extracts in Smallanthus sonchifolius H. Robinson

  • Shin, Dong Young (Department of Development in Oriental Medicine Resources, Sunchon National University) ;
  • Hyun, Kyu Hwan (Department of Development in Oriental Medicine Resources, Sunchon National University) ;
  • Kuk, YongIn (Department of Development in Oriental Medicine Resources, Sunchon National University) ;
  • Shin, Dong Won (Department of Development in Oriental Medicine Resources, Sunchon National University) ;
  • Kim, Han Woo (College of Medicine, Kosin University)
  • Received : 2017.05.08
  • Accepted : 2017.06.12
  • Published : 2017.06.30
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Abstract

This study was conducted with the aim of evaluating the antibiotic effects of leaves, stems, and roots in yacon (Smallanthus sonchifolius). Antibacterial activity of leaf extract by disk diffusion method with Bacillus subtilis and Escherichia coli respectively showed 13.3 and 13.75mm diameters of clear zone. There was no significant difference between the stems and leaves. The minimum inhibitory concentration of leaves' heating and agitation extraction showed a restrain of strain at 1mg/ml, but the stems and root extract did not appear. Yacon is a functional antibacterial material, and methanol extraction is more effective than water. This research was to investigate the growth stage of collection has the most effective antibacterial effects. It has collected yacon's leaves from June to October, which is an appropriate time for collection right before reaping. Yacon leaf has antibacterial effects on Bacillus subtilis, Escherichia coli, Enterococcus faecium, and Salmonella enteritifis. There were no significant differences by the growth stage of collection. Leaves collected in July are high in phenol which helps in sulfating activity works well considering the high scavenging capability of DPPH. Leaves collected in September are high in total flavonoid.

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References

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