. 2008 Jun;147(2):823–851. doi: 10.1104/pp.108.116004

Table V.

Peel-enriched metabolites detected by GC-MS analysis in derivatized extracts of tomato fruit peel and flesh during five developmental stages

Peak No.	Putative Metabolite	Compound Group	Up/Down^a
1	Glycerol-3-P	Sugar phosphate	Down
2	myo-Inositol-1-P^b	Sugar phosphate	Down
3	Glycerol^b	Sugar alcohol	No change
4	myo-Inositol^b	Sugar alcohol	Down
5	Ara^b	Sugar	Up
6	Xyl^b	Sugar	Up
7	Rib^b	Sugar	Up
8	Trehalose^b	Sugar	Up
9	Galactopyranoside, methyl	Sugar	–
10	Galactinol^b	Sugar	No change
11	Raffinose^b	Sugar	–
12	Threonic acid-1,4-lactone	Organic acid	–
13	N-Acetyl-Glu^b	Amino acid	–
14	Dehydroascorbic acid, dimer^c	Organic acid	Up
15	2-Keto-gluconic acid	Organic acid	–
16	Succinic acid^b	Organic acid	Down
17	Quinic acid^b	Organic acid	Down
18	GlcA	Organic acid	–
19	Galactonic acid	Organic acid	–
20	Gluconic acid^b	Organic acid	Down
21	GalA^b	Organic acid	Up
22	Putrescine^b	Amine	Up
23	Serotonin^b	Amine	–
24	Naringenin chalcone^b	Flavonoid	–

Changes in metabolite levels during fruit development as detected by GC-MS analysis of derivatized extracts performed by Carrari et al. (2006). Flesh and peel tissues were not separated in this study. –, Metabolites not reported in the Carrari et al. (2006) study.

Compounds were identified on the basis of comparison of their mass spectra and retention indexes with those of authentic standards; other metabolites were putatively identified by the comparison of their retention indexes and mass spectra with those available in spectral databases (see “Materials and Methods”).

Might have been generated from ascorbic acid in the presence of air.