Fig. 2 Solution NMR spectra of aerobically degraded ¹³C–glucose in samples incubated at 15°C and pH 6.8 after A, two weeks; B, three weeks; and C, four weeks. Assignments are presented in Table 2. (=) refers to monounsaturated carbons. Peak assignments 1 through 6 in the alkyl region between 14.3 ppm and 33.5 ppm refer to FA1 through FA6 in Table 2. Note that the scale of relative intensity is magnified in Fig. 2C

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