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Table 2 Relative retention times (RRTs) and concentrations (ng/g) measured for AEG, BMAA and DAB in samples and in Cycad control material as analyzed by the RPLC-MS/MS method

From: Analysis of β-N-methylamino-L-alanine (BMAA) in spirulina-containing supplements by liquid chromatography-tandem mass spectrometry

  RRTs* Concentrations (ng/g)**
Sample # AEG BMAA DAB AEG BMAA DAB
GH-1 nd nd 1.08 nd nd 1226
GH-2 0.96 nd 1.09 290 nd 2493
GH-3 0.96 nd 1.09 191 nd 1773
GH-4 0.96 nd 1.09 569 nd 2569
GH-5 0.96 nd 1.09 1348 nd 874
GH-6 0.96 nd 1.09 1240 nd 1599
GH-7 0.96 nd 1.09 1136 nd 963
GH-8 0.96 nd 1.09 486 nd 490
GH-9 0.96 nd 1.09 290 nd 1270
GH-10 0.96 nd 1.09 500 nd 696
Cycad (NRC) 0.96 1.003 1.08 375 208,089 631
  1. *relative to d3-BMAA (RT = 6.60 min).
  2. **internal standard quantitation was used for BMAA, while external calibration.
  3. nd = not detected (LOD = 80 ng/g for BMAA).
  4. Retention times are expressed relative to a d3-BMAA internal standard that was spiked into the individual samples.