The betalains of yellow, orange and red inflorescences of common cockscomb (Celosia argentea var. cristata) were compared and proved to be qualitatively identical to those of feathered amaranth (Celosia argentea var. plumosa). In addition to the known compounds amaranthin and betalamic acid, the structures of three yellow pigments were elucidated to be immonium conjugates of betalamic acid with dopamine, 3-methoxytyramine and (S)-tryptophan by various spectroscopic techniques and comparison to synthesized reference compounds; the latter two are new to plants. Among the betacyanins occurring in yellow inflorescences in trace amounts, the presence of 2-descarboxy-betanidin, a dopamine-derived betacyanin, has been ascertained. The detection of...
The demand for natural food colourants is increasing because of public awareness of their health ben...
Betacyanins have been reported as water-soluble, nitrogenous pigments found in the order Caryophylla...
Betacyanins have been reported as water-soluble, nitrogenous pigments found in the order Caryophylla...
HPLC characterization of reversed-phase (RP) high-performance liquid chromatography (HPLC) has been ...
Red-colored plants in the family Amaranthaceae are recognized as a rich source of diverse and unique...
Natural pigments are largely distributed in the plant kingdom. They belong to diverse groups, with d...
Natural pigments are largely distributed in the plant kingdom. They belong to diverse groups, with d...
Nature can be an inexhaustible source of natural additives. Looking at the colouring diversity prese...
Antioxidant activity of betalain pigments (seven pure compounds and four combined fractions) from pl...
The chemical stability and colorant properties of three betaxanthins recently identified from Celosi...
A lesser studied group of pigments, betalains, were extracted from floral tissues of 10 lines of Aus...
The 3rd International Congress on Pigments in Food, Quimper, France, 14-17 June 2004The colored vege...
While the red pigmentation in most flowering plants is due to the presence of anthocyanins, some spe...
Methods for the detection and characterisation of DOPA derivatives in plant tssues have been investi...
Amaranthus caudatus L. is a plant belonging to the Amaranthaceae family, and is a very interesting c...
The demand for natural food colourants is increasing because of public awareness of their health ben...
Betacyanins have been reported as water-soluble, nitrogenous pigments found in the order Caryophylla...
Betacyanins have been reported as water-soluble, nitrogenous pigments found in the order Caryophylla...
HPLC characterization of reversed-phase (RP) high-performance liquid chromatography (HPLC) has been ...
Red-colored plants in the family Amaranthaceae are recognized as a rich source of diverse and unique...
Natural pigments are largely distributed in the plant kingdom. They belong to diverse groups, with d...
Natural pigments are largely distributed in the plant kingdom. They belong to diverse groups, with d...
Nature can be an inexhaustible source of natural additives. Looking at the colouring diversity prese...
Antioxidant activity of betalain pigments (seven pure compounds and four combined fractions) from pl...
The chemical stability and colorant properties of three betaxanthins recently identified from Celosi...
A lesser studied group of pigments, betalains, were extracted from floral tissues of 10 lines of Aus...
The 3rd International Congress on Pigments in Food, Quimper, France, 14-17 June 2004The colored vege...
While the red pigmentation in most flowering plants is due to the presence of anthocyanins, some spe...
Methods for the detection and characterisation of DOPA derivatives in plant tssues have been investi...
Amaranthus caudatus L. is a plant belonging to the Amaranthaceae family, and is a very interesting c...
The demand for natural food colourants is increasing because of public awareness of their health ben...
Betacyanins have been reported as water-soluble, nitrogenous pigments found in the order Caryophylla...
Betacyanins have been reported as water-soluble, nitrogenous pigments found in the order Caryophylla...