Food Safety Risk Assessment of γ-Butyrolactone Transformation into Dangerous γ-Hydroxybutyric Acid in Beverages by Quantitative ¹³C-NMR Technique

Figure 1

The 1H-NMR results of GBL spiked into simulated acidic solution (a) and other seven popular beverages (b–h). The signals in solid wireframe in (a) were attributed to GBL and signals in dotted wireframe in all figures were attributed to GHB.

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(b)

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