Published:
2011-06-28
Original Research Articles
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- Figure 1 Reaction of GLY with BOA.
- Figure 2 Possible decomposition reactions of MP and PP in aqueous solution in the presence of GLY.
- Figure 3 Reaction scheme of preparation of 2,3-dihydroxypropyl 4-hydroxybenzoate (2,3-diOHPP)
- Figure 4 A chromatogram of the mixture initially containing 1.2 ?g mL-1 2,3-diOHPP, 3.5 ?g mL-1 4-HYB, 6.3 ?g × mL-1 MP and 2.5 ?g × mL-1 PP (see Experimental for detailed conditions)
- Figure 5 A plot of dependence of total decomposition of MP and PP, i.e. overall concentration of 4-HYB and 2,3-diOHPP, on the pH of SJ samples.
- Figure 6 A detail of the 1H-NMR spectrum of the evaporation residue of the ethyl acetate extract of the sample of SJ No. 3 measured in deuterium oxide – the region of aliphatic hydrogens. Chemical shifts of ester methylene and methine groups of 2,3-diOHPP
- Figure 7 The “aliphatic region” of 1H-NMR spectra of a saturated solution of 2,3-diOHPP in deuterium oxide. Particular multiplets are assigned to corresponding hydrogens by arrows.
