Journal of Natural Medicines

, Volume 67, Issue 4, pp 850–855

Astragaloside content in the periderm, cortex, and xylem of Astragalus membranaceus root

  • Ha-Jeong Kwon
  • Jeehyun Hwang
  • Sun-Kyoung Lee
  • Yong-Duk Park
Note

DOI: 10.1007/s11418-013-0741-8

Cite this article as:
Kwon, HJ., Hwang, J., Lee, SK. et al. J Nat Med (2013) 67: 850. doi:10.1007/s11418-013-0741-8

Abstract

Astragalosides are among the most predominant of the bioactive compounds in the root of Astragalus membranaceus and are differentially concentrated depending on the anatomical part of the root in question. The aim of this study was to analyse astragaloside contents in the periderm, cortex, and xylem of A. membranaceus root, and to compare the contents between peeled and unpeeled roots. Total astragalosides in the periderm were about 8-fold more concentrated than in the cortex, and 28-fold more concentrated than in the xylem. The dry weight percentages of total astragalosides in primary roots were 43.5 % in the periderm, 47.2 % in the cortex, and 9.30 % in the xylem. Furthermore, unpeeled main (primary) roots were enriched in astragalosides by 1.46-fold compared with peeled main roots, whereas unpeeled lateral roots were enriched by 2.33-fold compared with peeled lateral roots. In conclusion, the periderm is the most astragaloside-rich part of the root of A. membranaceus. Therefore, it is necessary to preserve the periderm in order to supply astragaloside-rich roots for use as health food supplements.

Keywords

Astragalus membranaceus Astragaloside Periderm Peeled root Unpeeled root 

Supplementary material

11418_2013_741_MOESM1_ESM.docx (13.2 mb)
Supplementary material 1 (DOCX 13565 kb)

Copyright information

© The Japanese Society of Pharmacognosy and Springer Japan 2013

Authors and Affiliations

  • Ha-Jeong Kwon
    • 1
  • Jeehyun Hwang
    • 1
  • Sun-Kyoung Lee
    • 1
  • Yong-Duk Park
    • 1
  1. 1.Department of Preventive and Social Dentistry, Graduate SchoolKyung Hee UniversitySeoulSouth Korea