Results 141 to 150 of about 1,182 (165)
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Natural Pigments: Carotenoids, Anthocyanins, and Betalains — Characteristics, Biosynthesis, Processing, and Stability

Critical Reviews in Food Science and Nutrition, 2000
Pigments are present in all living matter and provide attractive colors and play basic roles in the development of organisms. Human beings, like most animals, come in contact with their surroundings through color, and things can or cannot be acceptable based on their color characteristics.
F, Delgado-Vargas   +2 more
openaire   +2 more sources

Characterization of a tyrosinase from Amanita muscaria involved in betalain biosynthesis

Phytochemistry, 1996
Abstract A tyrosinase was characterized from the betalain-containing pileus of the mushroom Amanita muscaria . The enzyme was located exclusively in the coloured parts of the mushroom and hydroxylated tyrosine to 3-(3,4-dihydroxyphenyl)-alanine (DOPA), suggesting that it is involved in betalain biosynthesis.
Lukas A. Mueller   +2 more
openaire   +1 more source

Characterization of recombinant Beta vulgaris 4,5-DOPA-extradiol-dioxygenase active in the biosynthesis of betalains

Planta, 2012
Betalains are water-soluble pigments with high antiradical capacity which bestow bright colors to flowers, fruits and other parts of most plants of the order Caryophyllales. The formation of the structural unit of all betalains, betalamic acid from the precursor amino acid 4,5-dihydroxyphenylalanine is catalyzed by the enzyme 4,5-DOPA-extradiol ...
Fernando, Gandía-Herrero   +1 more
openaire   +2 more sources

Biosynthesis of Betalaines. On the Cleavage of the Aromatic Ring during the Enzymatic Transformation of Dopa into Betalamic Acid

Helvetica Chimica Acta, 1972
AbstractBei der enzymatischen Umwandlung von 3′,4′‐Dihydroxyphenylalanin (Dopa) in Betalaminsäure, in Betalain‐haltigen Centrospermen, wird der aromatische Ring an der Bindung neben den beiden Hydroxylgruppen (C(4′)‐C(5′)) und nicht zwischen den Hydroxyl gruppen (C(3′)‐C(4′)) gespalten.
N, Fischer, A S, Dreiding
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The gene coding for the DOPA dioxygenase involved in betalain biosynthesis in Amanita muscaria and its regulation

Molecular and General Genetics MGG, 1997
Genomic and cDNA clones derived from the gene (dodA) coding for DOPA dioxygenase, a key enzyme in the betalain pathway, were obtained from the basidiomycete Amanita muscaria. A cDNA library was established in the phage lambda ZapII and dodA clones were isolated using polyclonal antibodies raised against the purified enzyme. Their identity was confirmed
Hinz UG, Fivaz J, Girod PA, Zyrd JP
openaire   +3 more sources

Functional significance of betalain biosynthesis in leaves of Disphyma australe under salinity stress

Environmental and Experimental Botany, 2015
Abstract Shoots of Disphyma australe, a coastal succulent plant native to New Zealand, vary in colour from entirely red to entirely green. We hypothesised that the red pigmentation develops in response to salinity stress, and that these betalain pigments contribute to salt tolerance. Effects of salinity on betalain content, CO2 assimilation, stomatal
Gagandeep Jain, Kevin S Gould
exaly   +2 more sources

Qualitative and quantitative aspects of betalains biosynthesis in Amaranthus caudatus L. var. pendula seedlings

Planta, 1980
Seedlings of Amaranthus caudatus L. var. Pendula were used to study the influence of several treatment: white light, 3,4-dihydroxyphenylalanine (DOPA), kinetin, gibberellic acid (GA3) on betalains biosynthesis. The pigments, betacyanins and betaxanthins, were separated using a Sephadex G-15 column chromatography.
openaire   +2 more sources

The Assembly of Purple-red Spinach Provides Insight into the Mechanism of Betalain Biosynthesis

Abstract Purple-red spinach is a unique cultivar with rich in betalains, which has been used for food colorants and is beneficial for human health. In view of the lack of genomic inforamtion of purple-red spinach genome and promote the idetification of betalian gene, we presented the genome of purple-red spinach with Nanopore ultra-long
Zhiyuan Liu   +5 more
openaire   +1 more source

Elucidation of the first step in betalain biosynthesis allows the heterologous production of betalain pigments in plants

Planta Medica, 2016
G Polturak   +9 more
openaire   +1 more source

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