Betacyanin
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. UV-B radiation as an elicitor of secondary metabolite production in plants of the genus Alternanthera
ABSTRACT Ultraviolet B radiation has been described as a potential elicitor agent of the synthesis of secondary metabolites in plants. Thus, the present study aimed to investigate the production of betalains and total flavonoids, as well as the antioxidant activity, of Alternanthera sessilis, A. brasiliana, A. tenella and A. philoxeroides exposed to differen
Acta Bot. Bras.. Publicado em: 02/07/2018
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2. Stability of bioactive compounds in minimally processed beet according to the cooking methods
Abstract The current study aimed to determine the functional propriety of fresh beets under different cooking methods through the quantification of bioactives compounds. Beets were chosen for uniformity of size, color and absence of defects. They were thoroughly washed in running water to remove dirt, manually peeled with a knife, sliced through a stainless-
Food Sci. Technol. Publicado em: 26/10/2017
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3. Pigment production and growth of Alternanthera plants cultured in vitro in the presence of tyrosine
The aim of the present study was to investigate the influence of tyrosine on the in vitro growth and the production of the betacyanin pigment in Alternanthera philoxeroides and A. tenella. Nodal segments were inoculated in MS medium containing different concentrations of tyrosine (0, 25, 50 and 75 μM), and the number of sprouts and buds, height, root length
Braz. arch. biol. technol.. Publicado em: 19/11/2013
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4. Ácido salicílico como elicitor abiótico no cultivo in vitro de plantas de Alternanthera tenella Colla / Ácido salicílico como elicitor abiótico no cultivo in vitro de plantas de Alternanthera tenella Colla / Salicilyc acid as abiotic elicitor on culture in vitro of Alternenthera tenella Colla / Salicilyc acid as abiotic elicitor on culture in vitro of Alternenthera tenella Colla
Alternanthera tenella Colla, (Amaranthaceae), popularmente conhecida como apaga-fogo, apresenta compostos bioativos como betacianina e compostos fenólicos, sendo utilizada na medicina popular como diurético, anti-inflamatório e antitérmico. O uso de elicitores aliados à cultura de tecidos é uma alternativa para promover alterações no metabolismo secu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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5. Elicitores abióticos no estresse oxidativo e na expressão de gene da rota de betacianina em Alternanthera philoxeroides (Mart.) Griseb. / Abiotic elicitors in oxidative stress and in gene expression of the betacyanin route in Alternanthera philoxeroides (Mart.) Griseb
The medicinal Alternanthera (Amaranthaceae) species, such as A. philoxeroides, present a great variety of bioactive compounds, among which are the betacyanins, nitrogen pigments that belong to the betalains class. These compounds are widely used as additives for food and drugs, due to their antioxidant action and lack of toxicity, which have already been pro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/10/2011
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6. Study on efficiency of betacyanin extraction from red beetroots.
2009
International Journal of Food Science and Technology. Publicado em: 2011
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7. Temperature-dependent Expression of Betacyanin Synthesis in Amaranthus Seedlings 1
Two phenomena related to temperature effects have been observed during the induction of betacyanin synthesis by a cytokinin (benzyladenine) in Amaranthus tricolor seedlings. One is a total inhibition of betacyanin accumulation at a temperature (39 C) at which seedling growth is unimpaired, and where there is still adequate uptake of benzyladenine. The other
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8. Analysis of Variability in the Amaranthus Betacyanin Assay for Cytokinins: Effects of “Aging” Excised Cotyledons 1
“Aging” of excised cotyledons plus the top part of the hypocotyl of Amaranthus tricolor seedlings was carried out by washing in distilled H2O for varying periods. This led to increased betacyanin accumulation during the subsequent 24-hour induction period in the presence of tyrosine and Na+ + K+ phosphate. Endogenous accumulation as well as that dependen
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9. Ionic Regulation for Cytokinin-dependent Betacyanin Synthesis in Amaranthus Seedlings 1
Potassium ions at low concentrations stimulate cytokinin-dependent betacyanin synthesis in Amaranthus tricolor seedlings more than other alkali metal ions when tested as the chloride salts. The sequence of relative stimulation is K+ > Rb+ > (Na+ = Li+). Calcium and Mg2+ ions are inhibitory at concentrations > 1 millimolar when tested as chlorides. Anions als
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10. Temperature-sensitive Responses of Red Light-dependent Betacyanin Synthesis 1
Amaranthus tricolor half-seedlings show a greater accumulation of betacyanin in response to a defined period of red light if given a pretreatment at an elevated temperature (40 C). Red light given before the shift to 40 C is ineffective. The maximum response is achieved after a 2-hour shift to 40 C and if the red light is given 1 hour after return to the ger
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11. Effects of pH and Ethephon on Betacyanin Leakage from Beet Root Discs
Betacyanin leakage from beet root discs was found to increase with decreasing pH of the incubation medium. Although 10 millimolar Ca2+ reduced pigment leakage at pH 3.5, it was ineffective at pH 2.3. Leakage was also stimulated by 100 micrograms per milliliter (2-chloroethyl)-phosphonic acid (pH 3.1), but when the solution was neutralized, this leakage was e
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12. Regulation of Betacyanin Efflux from Beet Root by Poly-L-Lysine, Ca-Ion and Other Substances
Poly-l-lysine, poly-α, γ-diaminobutyric acid and basic proteins cause efflux of betacyanin from beet root tissues to varying degrees. Membrane activities fall in the order: polylysine > poly-α, γ-diaminobutyric acid > polyarginine (protamine), suggesting the importance of steric factors in side-chain to backbone relations. It was also observed that homop