Table 1.
Galangin conjugatea | [M+H]+ = 463 detected? | [M+H]+ = 376 detected? | UV Trace | Standard | Treatment with glucuronidase | Treatment with sulphatase | Probable identification |
---|---|---|---|---|---|---|---|
G1 | Yes | No | Flavonol-likeb. | None available | Rapid disappearance of peak with increase in aglycone | Minimal effect | G-5-GlcA |
G2 | Yes | No | Flavonol-likeb. Spectrum similar to K-3-GlcA (K2); see Table 3 and Figure 3. | None available | Rapid disappearance of peak with increase in aglycone | Minimal effect | G-3-GlcA |
G3 | Yes | No | Flavonol-likeb. Spectrum similar to K-7-GlcA (K3); see Table 3 and Figure b3. | None available | Rapid disappearance of peak with increase in aglycone | Minimal effect | G-7-GlcA |
G4 | No | Yes | Flavonol-likeb. | None available | Very minimal peak disappearance over hours that might be due to oxidation | Rapid disappearance of peak | G-S (unknown conjugation position) |
Refer to figure 1 for the corresponding chromatogram.
Distinct bands at 250-280 nm and 350-400 nm.