Biomass/Methanol (mg/mL) No. detected peaksa
2.5 237 ± 19
5 247 ± 15
10 299 ± 6
20 295 ± 5
a Means ± SD determined the total peak number with the peak height cut off at 12000.
Table 1: Comparison of total detected peak of intracellular metabolites extracted from different biomass to methanol ratios.