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Table 2 Cobalt species observed in enzymatic extracts analyzed by μ-HPLC-ESI-MS

From: Study of bioaccessibility of cobalt species in berries and seeds by mass spectrometry techniques

Sample Enzyme Bioaccessibility (%) tr (min) Molecular formula (m/z)
açaí berries pepsin 63.4 23.7 [Cbl + H]2+ 665.2
    29.4 [CN-Cbl + 2H]2+ 678.1
    27.3 [Me-Cbl + H]2+ 673.2
    27.3 [Me-Cbl]+ 1344.5
  pancreatin 94.1 28.9 [Cbl + H]2+ 665.0
    25.7 [Ado-Cbl + H]2+ 790.4
bilberries pepsin 44.2 23.6 [Cbl + H]2+ 665.1
    29.4 [CN-Cbl + 2H]2+ 678.3
    29.4 [CN-Cbl + H]+ 1355.5
    27.3 [Me-Cbl]+ 1344.5
    25.7 [Ado-Cbl + H]2+ 790.4
  pancreatin 32.1 28.7 [Cbl + H]2+ 665.0
chia seeds pepsin 56.1 29.3 [CN-Cbl + 2H]2+ 678.7
    25.9 [Ado-Cbl + H]2+ 790.3
  pancreatin 37.4 - - -
goji berries pepsin 86.2 27.4 [Me-Cbl + H]2+ 673.3
  pancreatin 91.4 28.8 [Cbl + H]2+ 665.1
    27.3 [Me-Cbl + H]2+ 673.0
standards
    23.6 [Cbl + H]2+ 665.1
    27.2 [Me-Cbl]+/[Me-Cbl + H]+ 637.2/1344.5
    25.7 [Ado-Cbl + H]2+ 790.3
    29.4 [CN-Cbl +2H]+/[CN-Cbl + H]+ 678.1/1355.5