Results 131 to 140 of about 1,112 (179)

Betacyanins from bracts of Bougainvillea glabra

Phytochemistry, 1994
Betacyanins from the bracts of Bougainvillea glabra were isolated and characterized by a combination of spectroscopic techniques (DAD-HPLC, NMR, LC-MS, GC-MS, electrospray MS, tandem MS) as gomphrenin I (betanidin 6-O-beta-glucoside) and various derivatives of bougainvillein-v (betanidin 6-O-beta-sophoroside), i.e.
S, Heuer, S, Richter, J W, Metzger, V, Wray, M, Nimtz, D, Strack   +5 more
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Formation and occurrence of dopamine-derived betacyanins

Phytochemistry, 2001
In light of the fact that the main betaxanthin (miraxanthin V) and the major betacyanin (2-descarboxy-betanidin) in hairy root cultures of yellow beet (Beta vulgaris L.) are both dopamine-derived, the occurrence of similar structures for the minor betacyanins was also suggested.
N, Kobayashi, J, Schmidt, V, Wray, W, Schliemann   +3 more
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Identification and Distribution of Simple and Acylated Betacyanins in the Amaranthaceae

Journal of Agricultural and Food Chemistry, 2001
Red-colored plants in the family Amaranthaceae are recognized as a rich source of diverse and unique betacyanins. The distribution of betacyanins in 37 species of 8 genera in the Amaranthaceae was investigated. A total of 16 kinds of betacyanins were isolated and characterized by HPLC, spectral analyses, and MS. They consisted of 6 simple (nonacylated)
Cai, Y, Sun, M, Corke, H
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Intramolecular stabilization of acylated betacyanins

Phytochemistry, 1998
Abstract Racemization and stability of the betacyanins, betanin (betanidin 5-O-glucoside) and amaranthin(betanidin 5-O-glucuronosylglucoside), under acidic conditions were compared with those of the corresponding feruloyl derivatives, lampranthin II and celosianin II.
Willibald Schliemann, Dieter Strack
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Betacyanins are plant-based dyes with potential as histological stains

Biotechnic & Histochemistry, 2022
Interest is increasing in certain parts of the world in replacing synthetic dyes with dyes from natural sources, particularly from plants. Although textile dyers have used various groups of natural dyes, microscopists generally have restricted their use to anthocyanins.
Hayfaa A. Alshamar, Nooruldeen A. Hatem, Richard W. Dapson   +2 more
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Chlorination of Betacyanins in Several Hypochlorous Acid Systems

Journal of Agricultural and Food Chemistry, 2016
This study presents a comparative evaluation of chlorination of betanin, betanidin, and neobetanin exposed to sodium hypochlorite and myeloperoxidase (MPO)/H2O2/Cl(-) systems. For betanin/betanidin, the chlorination takes place at the aglycone unit, but for neobetanin, no chlorinated products in the reaction mixtures can be detected.
Sławomir Wybraniec, Karolina Starzak, Pietrzkowski, Zbigniew   +2 more
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Fruit Flesh Betacyanin Pigments in Hylocereus Cacti

Journal of Agricultural and Food Chemistry, 2002
Determination of profiles and total contents of betacyanins in cactus fruits of Hylocereus species using chromatographic and spectrophotometric method is described. The investigated species were H. polyrhizus, H. purpusii, H. costaricensis, H. sp. 487 (all red-flesh species and hybrids made among them), and the white- or red-flesh species H.
S. Wybraniec, Mizrahi, Y.
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Betacyanins from vine cactus Hylocereus polyrhizus

Phytochemistry, 2001
The presence of betacyanin pigments and their isoforms has been detected in the fruit of Hylocereus polyrhizus, a vine cactus native to South America. Along with the known betanin and phyllocactin (6'-O-malonylbetanin), a new betacyanin was structurally elucidated as betanidin 5-O-[6'-O-(3"-hydroxy-3"-methyl-glutaryl)-beta-D-glucopyranoside] (proposed ...
Sławomir Wybraniec, Platzner, Itzhak, Geresh, Shimona, Gottlieb, Hugo, Haimberg, Marcela, Mogilnitzki, Michael, Mizrahic, Yosef   +6 more
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Acylated betacyanins from Drosanthemum floribundum

Phytochemistry, 1973
Abstract Four new acylated betacyanins have been isolated from flowers of Drosanthemum floribundum (Haw.) Schwant. These pigments were characterized as hydroxycinnamoyl derivatives of betanin and isobetanin.
Giuseppe Impellizzeri, Mario Piattelli, Sebastiano Sciuto   +2 more
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A method for identification of diastereomers of 2-decarboxy-betacyanins and 2,17-bidecarboxy-betacyanins in reversed-phase HPLC

Analytical and Bioanalytical Chemistry, 2007
A method was developed for identification of diastereomers of 2-decarboxy-betacyanins and 2,17-bidecarboxy-betacyanins chromatographed in reversed-phase high-performance liquid chromatography (HPLC) as pairs of unknown elution order. The method was based on alkaline hydrolysis of selected betacyanin and decarboxylated betacyanin mixtures and subsequent
openaire   +3 more sources