Leaf flavonoids of the cruciferous species, Camelina sativa, Crambe spp., Thlaspi arvense and several other genera of the family Brassicaceae

摘要

The flavonoid profiles of 22 accessions of Camelina sativa and five other crucifer species, Crambe abyssinica, Crambe hispanica, Thlaspi arvense, Brassica napus, and Sinapis alba, were studied by a combination of liquid, paper and thin layer chromatography. Flavonoids were confirmed by comparison of their characteristics, including colour under UV light, changes to colour under UV with fuming in NH3 vapour, UV spectra and comparison of RF-values, with those of authentic standards. HPLC-mass spectroscopic data were obtained to confirm identities of several compounds. Flavonoids present in several other crucifer species were identified by TLC only. We report the accumulation of derivatives of the flavonols, quercetin, in C sativa; quercetin and kaempferol in C hispanica var. glabrata; quercetin, kaempferol and isorhamnetin in B. napus; and kaempferol and isorhamnetin in S. alba. Derivatives of the flavones, apigenin and luteolin, accumulate in C abyssinica, C hispanica var. hispanica and T arvense leaves.