Results 141 to 150 of about 1,262 (173)
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Betacyanins from fruits of Basella rubra
Phytochemistry, 1993Abstract Ion spray mass spectrometry and tandem mass spectrometry of the fresh juice from Basella rubra fruits revealed the presence of betanidin monoglucoside as the major betacyanin and its 4-coumaroyl and feruloyl derivatives as minor components.
Werner E. Glässgen +3 more
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Betacyanins from Lampranthus sp. (aizoaceae)
Phytochemistry, 1969Abstract Isolation and characterization of four betacyanins from flowers of Lampranthus sp. is reported. These pigments have been shown to be hydroxycinnamoyl derivatives of betanin and isobetanin.
M. Piattelli, G. Impellizzeri
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[Study of betacyanin-discolorating enzyme].
Biokhimiia (Moscow, Russia), 1977An enzyme catalyzing the discoloration and breakdown of betacyanins was isolated from beet roots Beta vulgaris by centrifugation in sucrose density gradient (2.5 M, 2.0 M, 1.5 M, 1.0 M, tris-HCl buffer, 0.05 M, pH 7.2), and purified 100-fold. The enzyme activity induced the discoloration of betanin, betanidin.
G A, Soboleva +3 more
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Effect of continuous far red on betaxanthin and betacyanin synthesis
Phytochemistry, 1973Abstract Seedlings of Celosia plumosa under prolonged irradiation with far red light synthesize chlorophyll α and betaxanthin. Levulinic acid and 2,4-dinitrophenol, inhibitors of chlorophyll synthesis and cyclic photophosphorylation respectively, reduce betaxanthin synthesis. Pigment formation is also inhibited by actinomycin- D and puromycin, but
Giudici de Nicola M +2 more
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Betacyanins from plants and cell cultures of Phytolacca americana
Phytochemistry, 1996Betacyanins from cell cultures of Phytolacca americana were characterized and compared with those of the stems and ripening fruits of the plant. Whereas in fruits prebetanin (betanin 6'-O-sulphate) and its isoform predominate, in the stem and cell cultures feruloylated derivatives occur as the major components.
W, Schliemann +6 more
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Mammillarinin: A New Malonylated Betacyanin from Fruits of Mammillaria
Journal of Agricultural and Food Chemistry, 2007A new betacyanin endogenously occurring in fruits of nine Mammillaria species, i.e., M. roseo-alba (Boedecker), M. donatii (Berge), M. coronata (Scheidweiler), M. karwinskiana (Martius), M. gummifera (Engelmann), M. infernillensis (Craig), M. centricirrha (Lemaire), M. krameri (Muehlenpfordt), and M.
Sławomir Wybraniec +1 more
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Colorant Properties and Stability ofAmaranthusBetacyanin Pigments
Journal of Agricultural and Food Chemistry, 1998Color, spectral characteristics, and stability of betacyanin pigments of 21 genotypes from 7 Amaranthus species were evaluated. Wide variation in color characteristics and significant differences in pigment stability were found as much within as between Amaranthus species.
Corke, H, Cai, Y, Sun, M
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Journal of Chromatography A, 2006
The ability of tetraalkylammonium salts to act as ion-pairing agents for betacyanins and mono- as well as bidecarboxylated betacyanins in HPLC on reversed phase is reported. The results indicate substantial and various influences of tetraalkylammonium salt addition to eluent on magnitude and direction of retention time changes of the analytes.
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The ability of tetraalkylammonium salts to act as ion-pairing agents for betacyanins and mono- as well as bidecarboxylated betacyanins in HPLC on reversed phase is reported. The results indicate substantial and various influences of tetraalkylammonium salt addition to eluent on magnitude and direction of retention time changes of the analytes.
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Chromatographic investigation on acyl migration in betacyanins and their decarboxylated derivatives
Journal of Chromatography B, 2008Chemopreventive and antioxidant action of betalain pigments can differ in dependence on their stereoselective properties, therefore, it is necessary to use relevant methods for monitoring of their possible stereoisomers. Chromatographic characterisation of a group of new isomers of various 6'-O-acylated betacyanins and decarboxylated betacyanins which ...
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