Table 1.

Target metabolites detected by GC/MS

Name	Retention time (min)	Formula	m/z Range
Pyruvate + OAA	6.34	C6H12NO3Si	174–177
Lactate	6.72	C8H19O3Si2	219–222
Succinate	14.45	C9H19O4Si2	247–251
Fumarate	15.31	C9H17O4Si2	245–249
Malate	17.42	C12H27O5Si3	335–339
PEP	18.39	C11H26O6PSi3	369–372
Citrate	19.79	C17H37O7Si4	465–471
Ribitol (i.s.a)	19.32	C19H49O5Si5	219

(i.s.^a), internal standard.