The flavonoids in leaves of diploidTriticum species (Gramineae)

Identification and quantification of flavonoids in traditional cultivars of red and white onions at harvest

“…Performance of the analytical procedure Flavonols and anthocyanins are soluble in polar solvents, with the glucosides more soluble in water and the aglycones more soluble in alcohols. These phenolics are commonly extracted from plant materials with water-alcohol (methanol or ethanol) mixtures acidified with mineral acids (Harborne et al, 1986;Hertog et al, 1992;Fossen et al, 1996;Robards and Antolovich, 1997;García-Viguera et al, 1998;Revilla et al, 1998;Da Costa et al, 2000;Mozetic and Trebse, 2004) to prevent the degradation of the non-acylated anthocyanin pigments. Additionally, acid solutions (pH < 2) keep the anthocyanins in their stable flavilium form, increasing the intensity of red hue, facilitating the visual control of extraction.…”

Tricin—a potential multifunctional nutraceutical

“…It was also shown that the relative amounts of glycosylflavones and four tricin glycosides, in seven Triticum species, could be used as indicators of the three more likely diploid ancestors to the hexaploid T. aestivum than the other four spp. (Harborne et al 1986). Finally, it is worth mentioning that the dyeing properties of leaf extracts of a number of wheat varieties, including var.…”

Bananas and Plantains

“…This diversity has been utilized in studies of plant species diversification (Young and Sterner, 1981;Ardouin et al, 1985;Harborne et al, 1986;Gluchoff-Fiasson and Jay, 1987). The processes by which f1avonoids are synthesized are susceptible to selective/evolutionary pressures.…”