Results 181 to 190 of about 3,267 (217)

Betacyanins from plants and cell cultures of Phytolacca americana

Phytochemistry, 1996
Betacyanins 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, R W, Joy, A, Komamine, J W, Metzger, M, Nimtz, V, Wray, D, Strack   +6 more
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Betacyanin decolourizing enzyme in Amaranthus tricolor seedlings

Phytochemistry, 1983
Abstract The characterization and partial purification of an enzyme from Amaranthus tricolor which decolourizes betacyanin are described. The enzyme occurs in greatest amounts in the roots and in 3.5-4-day-old seedings. Preparation from an acetone powder of roots results in a more active and more stable enzyme than that obtained from crude buffer ...
Daphne C. Elliott, Christopher G. Schultz, Rachel A. Cassar   +2 more
openaire   +1 more source

Amaranthus Betacyanin Pigments Applied in Model Food Systems

Journal of Food Science, 1999
ABSTRACT: Amaranthus betacyanin pigments and commercial colorants were evaluated to determine color characteristics and stability at different temperatures in jelly, ice cream, and a model beverage.
Cai, Y, Corke, H
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Production and Properties of Spray‐dried Amaranthus Betacyanin Pigments

Journal of Food Science, 2000
ABSTRACT: Amaranthus betacyanin extracts were spray‐dried using a range of maltodextrins [10‐25 dextrose equivalent (DE)] and starches (native/modified) as carrier and coating agents at 5 inlet/outlet air temperatures and 4 feed solid contents.
Corke, H, Cai, YZ
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Betacyanin biosynthesis in the isolated hypocotyls bei Acetabularia mediterranea

Planta, 1976
Isolated hypocotyls synthesize betacyanin after light exposure in Amaranthus caudatus L. Pigment synthesizing capacity is reduced in the hypocotyls with increased incubation of seedlings in dark after 24h. External feeding of precursors of betacyanin L-tyrosine and DOPA enhances pigment synthesis in the isolated hypocotyls to equal that of intact ...
K N, Guruprasad, M M, Laloraya
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Mammillarinin: A New Malonylated Betacyanin from Fruits of Mammillaria

Journal of Agricultural and Food Chemistry, 2007
A 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, Barbara, Nowak-Wydra   +1 more
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[Study of betacyanin-discolorating enzyme].

Biokhimiia (Moscow, Russia), 1977
An 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, M S, Ul'ianova, N S, Zakharova, M A, Bokuchava   +3 more
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Colorant Properties and Stability ofAmaranthusBetacyanin Pigments

Journal of Agricultural and Food Chemistry, 1998
Color, 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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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
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Influence of perfluorinated carboxylic acids on ion-pair reversed-phase high-performance liquid chromatographic separation of betacyanins and 17-decarboxy-betacyanins

Journal of Chromatography A, 2004
The ability of trifluoroacetic acid, pentafluoropropionic acid and heptafluorobutyric acid to act as ion-pairing agents for betacyanins and 17-decarboxy-betacyanins during HPLC analysis on a Luna C18(2) reversed-phase column is reported. While the perfluorinated carboxylic acids affect the retention of both groups of compounds by changing the pH of the
Sławomir, Wybraniec, Yosef, Mizrahi
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