Fig. 3 Carbon types identified by solution NMR and CO2 produced from the degradation of 13C–glucose in the samples incubated aerobically for four weeks at A, 15°C and pH = 4.3; B, 25°C and pH = 4.3; C, 15°C and pH = 6.8; D, 25°C and pH = 6.8
Fig. 3 Carbon types identified by solution NMR and CO2 produced from the degradation of 13C–glucose in the samples incubated aerobically for four weeks at A, 15°C and pH = 4.3; B, 25°C and pH = 4.3; C, 15°C and pH = 6.8; D, 25°C and pH = 6.8