Betalains
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Meloidogyne javanica parasitism and its impacts on the vegetative parameters, physicochemical composition, and antioxidant potential of beet
Resumo: O objetivo deste trabalho foi avaliar o efeito da infestação por Meloidogyne javanica sobre o desenvolvimento vegetativo, as características nutricionais e o potencial antioxidante da beterraba (Beta vulgaris). A inoculação foi feita em plântulas de beterraba com 0, 1.000, 2.500, 5.000 e 10.000 ovos e prováveis juvenis de nematoide em segundo
Pesq. agropec. bras.. Publicado em: 05/09/2019
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2. Study of adsorption isotherms and physicochemical characterization of natural food colourants
Abstract Synthetic colourants are widely used for colouring foods. However, their safety has been questioned. Due to this limitation and the global trend of consuming healthy foods, the industry is faced with the need to replace artificial colourings, which has given rise to a growing interest in colourants from natural sources. Thus, this work obtained the
Food Sci. Technol. Publicado em: 31/01/2019
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3. 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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4. Chemistry Inspired by the Colors of Fruits, Flowers and Wine
ABSTRACT An overview is provided of the status of research at the frontiers of investigation of the chemistry and photochemistry of two classes of natural plant pigments, the anthocyanins and the betalains, as well as of the pyranoanthocyanin pigments formed from anthocyanins during the maturation of red wine. Together, anthocyanins and betalains are respons
An. Acad. Bras. Ciênc.. Publicado em: 2018
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5. 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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6. 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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7. Betalains: properties, sources, applications, and stability ? a review.
2009
International Journal of Food Science and Technology. Publicado em: 2011
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8. Modelling of Absorption and Antiradicalar Properties of Betalains / Modelagem das Propriedades de Absorção e da Atividade Anti-radicalar de Betalaínas
Nesta dissertação de mestrado são apresentados os resultados da modelagem das propriedades de absorção e da atividade anti-radicalar de betalaínas, pigmentos naturais encontrados em algumas classes de plantas e fungos. Foi realizada uma busca conformacional empregando mecânica molecular (campo de força MM+) e método ab initio (HF/6-31G(d,p)), que re
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/10/2009
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9. Physiological, biochemical and microbiological responses of minimally processed and whole beet roots submitted to postharvest treatments / Respostas fisiológicas, bioquímicas e microbiológicas de beterrabas minimamente processadas e inteiras submetidas a tratamentos pós-colheita
The purpose of the present work was to evaluate physiological, biochemical and, microbiological aspects of Early Wonder whole and minimally processed beet roots submitted to different treatments. The following treatments were applied: ethylene (1000µL L-1), 1-MCP (300nL L-1) and, salicylic acid (500mg L-1). After treatments, beet roots were stored at 5oC du
Publicado em: 2008
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10. Betaxanthins as Substrates for Tyrosinase. An Approach to the Role of Tyrosinase in the Biosynthetic Pathway of Betalains1
Tyrosinase or polyphenol oxidase (EC 1.14.18.1) is the key enzyme in melanin biosynthesis and in the enzymatic browning of fruits and vegetables. The role of tyrosinase in the secondary metabolism of plants still remains unclear, but its implication in betalain biosynthesis has been proposed. Betalains are an important class of water-soluble pigments, charac
American Society of Plant Biologists.
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11. Characterization and Functional Identification of a Novel Plant 4,5-Extradiol Dioxygenase Involved in Betalain Pigment Biosynthesis in Portulaca grandiflora
Betalains are pigments that replace anthocyanins in the majority of families of the plant order Caryophyllales. Betalamic acid is the common chromophore of betalains. The key enzyme of the betalain biosynthetic pathway is an extradiol dioxygenase that opens the cyclic ring of dihydroxy-phenylalanine (DOPA) between carbons 4 and 5, thus producing an unstable
The American Society for Plant Biologists.
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12. Cloning and characterization of polyphenol oxidase cDNAs of Phytolacca americana.
Two cDNA clones encoding polyphenol oxidases were isolated from a cDNA library constructed from a log-phase suspension culture of Phytolacca americana (pokeweed) producing betalains. The clones exhibit 93 and 86% sequence identity at the nucleotide and deduced amino acid levels, respectively. Both clones contain two copper-binding domains characterized by hi