Results 111 to 120 of about 638 (147)

Effect of Environmentally Friendly Betalain Extraction Methods on Antioxidant Compounds of Tunisian <i>Opuntia stricta</i> Fruit. [PDF]

Foods
Smirani N, Bouazizi S, Bettaieb E, Torkhani R, Hamdi M.   +4 more
europepmc   +1 more source

Multiple transitions to high l-DOPA 4,5-dioxygenase activity reveal molecular pathways to convergent betalain pigmentation in Caryophyllales. [PDF]

New Phytol
Walker-Hale N, Guerrero-Rubio MA, Brockington SF.   +2 more
europepmc   +1 more source

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BpCYP76AD15 is involved in betaxanthin biosynthesis in bougainvillea callus

Planta, 2023
BpCYP76AD15 is involved in betaxanthin biosynthesis in callus, but not in bracts, in bougainvillea. Bougainvillea (Bougainvillea peruviana) is a climbing tropical ornamental tree belonging to Nyctaginaceae. Pigments that are conferring colorful bracts in bougainvillea are betalains, and that conferring yellow color are betaxanthins. In general, for red-
Sho Ohno, Rika Kokado, Rikako Makishima, Motoaki Doi   +3 more
openaire   +2 more sources

Characterization of the monophenolase activity of tyrosinase on betaxanthins: the tyramine-betaxanthin/dopamine-betaxanthin pair

Planta, 2005
Tyrosinase or polyphenol oxidase (EC 1.14.18.1) is the key enzyme responsible for melanin biosynthesis and for the enzymatic browning of fruits and vegetables. Although the function of tyrosinase in the secondary metabolism of plants remains unclear, it has been proposed that the enzyme plays a role in the betalain biosynthetic pathway.
Fernando, Gandía-Herrero, Josefa, Escribano, Francisco, García-Carmona   +2 more
openaire   +2 more sources

A new betaxanthin from Glottiphyllum longum

Phytochemistry, 1973
Abstract The new betaxanthin (II) dopaxanthin was isolated from flowers of Glottiphyllum longum . Its structure was confirmed by chemical synthesis.
Giuseppe Impellizzeri, Mario Piattelli, Sebastiano Sciuto   +2 more
openaire   +1 more source

Production of yellow‐flowered gentian plants by genetic engineering of betaxanthin pigments

New Phytologist, 2023
Summary Genetic engineering of flower color provides biotechnological products such as blue carnations or roses by accumulating delphinidin‐based anthocyanins not naturally existing in these plant species. Betalains are another class of pigments that in plants are only synthesized in the order Caryophyllales.
Masahiro Nishihara, Akiko Hirabuchi, Fumina Goto, Yuzo Nishizaki, Shota Uesugi, Aiko Watanabe, Keisuke Tasaki, Rie Washiashi, Nobuhiro Sasaki   +8 more
openaire   +2 more sources

Humilixanthin a new betaxanthin from Rivina humilis

Phytochemistry, 1987
Abstract A new betalain has been isolated from fruits of Rivina humilis and identified as the betaxanthin humilixanthin, the 5-hydroxynorvaline-immonium conjugate of betalamic acid. Its structure was elucidated and characterized by 1 H NMR spectroscopy, FAB mass and GC/MS spectrometry, UV/Vis absorption spectroscopy, high-performance liquid ...
Strack, D., Schmitt, D., Reznik, H., Boland, W., Grotjahn, L., Wray, V.   +5 more
openaire   +2 more sources

Photocontrol of betaxanthin synthesis in Celosia plumosa seedlings

Phytochemistry, 1973
Abstract Light stimulates the betaxanthin accumulation in Celosia plumosa . The induction is partially reversed by far-red and inhibited by actinomycin D, puromycin, salicylaldoxime and 2,4-dinitrophenol, while 3-(3,4-dichlorophenyl)-1,1-dimethylurea has an inhibitory effect only when photosynthesis is operative.
Giudici de Nicola M, Piattelli M, AMICO, Vincenzo   +2 more
openaire   +2 more sources

Effect of continuous far red on betaxanthin and betacyanin synthesis

Phytochemistry, 1973
Abstract 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, Piattelli M, AMICO, Vincenzo   +2 more
openaire   +2 more sources