eustoma/glycoside

Six polyoxygenated xanthones were isolated from the roots of Eustoma grandiflorum (Raf.) Shinners collected in Texas. Structural elucidation of five of these xanthones (1-hydroxy-3,7-dimethoxyxanthone, 1-hydroxy-3,5-dimethoxyxanthone, 1-hydroxy-3,5,6,7-tetramethoxyxanthone,

A new flavonol triglycoside, kaempferol 3-0-α-L-rhamnopyranosyl (1>6)-(3-0-E-p-coumaroyl)- β-D-galactopyranoside-7-0-α-L-rhamnopyranoside (1: Eustograndifloside A) was isolated from the flower of Eustoma grandiflonm in addition to eight known flavonols (2: kaempferol 3-0-a-L-rhamnopyranosyl

It is widely accepted that the mix of flavonoids in the cell vacuole is the source of flavonoid based petal colour, and that analysis of the petal extract reveals the nature and relative levels of vacuolar flavonoid pigments. However, it has recently been established with lisianthus flowers that

Flavonoids are considered to be located predominantly in the vacuoles of epidermal cells and in the cuticular wax of terrestrial plants. However, recent reports have suggested that flavonoids may also reside elsewhere in the cells of green leaves. In the present study of lisianthus flower petals, it