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Table 1 GC-MS analysis of identified compounds in the 6 bioactive fractions of E. purpurea root extract a.

From: Echinacea-induced cytosolic Ca2+ elevation in HEK293

  Fraction 68 Fraction 72 Fraction 75 Fraction 80 Fraction 83 Fraction 94
Compound % by Dry Weight μM % by Dry Weight μM % by Dry Weight μM % by Dry Weight μM % by Dry Weight μM % by Dry Weight μM
Bauer
alkamide 1+2
2.8 0.41 Nd Nd Nd Nd Nd Nd Nd Nd Nd Nd
Chen
alkamide
11.5 1.56 2.8 2.38 Nd Nd Nd Nd Nd Nd Nd Nd
Bauer
alkamide 10
Nd Nd 1.2 1 15.1 0.19 0.4 0.01 Nd Nd 0.8 1.33
Bauer
alkamide 11
Nd Nd Nd Nd Nd Nd 6.7 0.13 11.2 0.74 6.5 10.7
Bauer
alkamide 8+9
Nd Nd 41.9 35.32 46.9 0.61 2.5 0.05 4.6 0.31 1.8 3.01
Bauer
alkamide 4
11.5 1.56 Nd Nd Nd Nd Nd Nd Nd Nd Nd Nd
Bauer
alkamide 6
5.1 0.66 Nd Nd Nd Nd Nd Nd Nd Nd Nd Nd
  1. a The chemical identification of these alkamides in this E. purpurea accession, and the systematic chemical nomenclature for these alkamides have been previously described [3]. All identified constituents were confirmed via GC-MS with synthetic standards. Nd: not detectable.