Results 121 to 130 of about 1,262 (173)

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
Sławomir Wybraniec, Wybraniec Sławomir   +1 more
exaly   +4 more sources

Betacyanins from bougainvillea

Phytochemistry, 1970
Abstract The isolation of seven new betacyanins from purple bracts of Bougainvillea “Mrs. Butt” is described. Two of these pigments, bougainvillein-r-I and isobougainvillein-r-I, have been shown to be 5- O -β-sophorosides of betanidin and isobetanidin, respectively, the remaining five being hydroxycinnamoyl derivatives of bougainvillein-r-I and ...
M. Piattelli, F. Imperato
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Betacyanins of some chenopodiaceae

Phytochemistry, 1971
Abstract Four species of the Chenopodiaceae have been investigated for their betacyanin content. From the leaves of Suaeda fruticosa a new acylated pigment has been isolated and identified as citryl-celosianin.
M. Piattelli, F. Imperato
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Betacyanins of the family cactaceae

Phytochemistry, 1969
Abstract Thirty-four species of the family Cactaceae have been investigated for their betacyanin content. All the species examined contain betanin and many of them also phyllocactin. Betanidin and some new betacyanins have a more limited occurrence.
M. Piattelli, F. Imperato
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The decolorization of betacyanin by polyamines

Phytochemistry, 1985
Abstract The pigment betacyanin, the efflux of which has been used as a measure of membrane integrity in red beet discs, has now been shown to react with di- and polyamines with consequent decolorization.
SMITH, T A, CROKER, S J
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Characterisation, stability and application of betacyanins and microencapsulated betacyanins to sunscreen formulations

2021
The thesis is about extraction of betacyanins from red dragon fruit and red spinach, and application of maltodextrin-encapsulated betacyanins from red dragon fruit in sunscreen formulations.
openaire   +1 more source

Heat stability of betacyanins

Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung, 1983
The heat decomposition of betacyanins takes place at pH 2.2–4.0 according to the first-order kinetics; at pH value 5.0 and above the complete decomposition of betacyanins can be better described using a rational exponent-order kinetics. The destruction rate of betacyanins strongly depends on the temperature.
Ludmila Havl�kov�, Kamila Mikov�, Vladim�r Kyzlink   +2 more
openaire   +1 more source

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
openaire   +2 more sources

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.
Sebastiano Sciuto, Giuseppe Impellizzeri, Mario Piattelli   +2 more
exaly   +2 more sources

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
openaire   +2 more sources