Fructan
Mostrando 1-12 de 75 artigos, teses e dissertações.
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1. Fructan dynamics in the underground organs of Chresta exsucca (Asteraceae), a dry season flowering species
ABSTRACT Climatic seasonality has an influence on the phenology of native Cerrado plants. Herbs and subshrubs tend to flower in the rainy season, although some species of these habits flower in the dry season. Reserve carbohydrates, stored in the underground organs, are used to support phases of high energy-demand, but also may protect plants from damage dur
Acta Bot. Bras.. Publicado em: 06/11/2017
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2. Ultrasound-assisted extraction of fructans from agave (Agave tequilana Weber var. azul) at different ultrasound powers and solid-liquid ratios
Abstract The effects of ultrasound-assisted extraction (UAE) at different ultrasound power densities (UPDs; 40, 80, and 120 mW/mL) and solid:liquid (S:L) ratio (1:2, 1:3, and 1:6) on the extraction of carbohydrates from Agave tequilana plant of different ages were evaluated. Extracts obtained (6- and 7-year-old plant) were analyzed in the yield of carbohydra
Food Sci. Technol. Publicado em: 29/05/2017
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3. Effect of plant growth-promoting bacteria on the growth and fructan production of Agave americana L.
ABSTRACT The effect of plant growth-promoting bacteria inoculation on plant growth and the sugar content in Agave americana was assessed. The bacterial strains ACO-34A, ACO-40, and ACO-140, isolated from the A. americana rhizosphere, were selected for this study to evaluate their phenotypic and genotypic characteristics. The three bacterial strains were eval
Braz. J. Microbiol.. Publicado em: 2016-09
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4. Anatomy and fructan distribution in vegetative organs of Dimerostemma vestitum (Asteraceae) from the campos rupestres
Entre os compostos armazenados pelas plantas, várias funções são atribuídas aos frutanos, tais como fonte de energia e proteção contra seca e temperaturas extremas. No presente estudo nós analisamos a anatomia e a distribuição de frutanos nos órgãos vegetativos de Dimerostemma vestitum (Asteraceae), uma espécie endêmica dos campos rupestres bra
An. Acad. Bras. Ciênc.. Publicado em: 09/06/2015
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5. Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions
Rock field plant species present several adaptations to the climatic characteristics and seasonality of this habitat. In this study, we evaluate under field conditions the seasonal changes in non-structural carbohydrate accumulation in tuberous organs of Gomphrena marginata. Tuber fragments of plants of G. marginata were sampled monthly for a year (August 20
Theor. Exp. Plant Physiol.. Publicado em: 2013
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6. Estudo da produção de frutose a partir de levana obtida da sacarose / Study of frutose production from levana obtained from sucrose
O mercado consumidor da frutose tem aumentado significativamente nos últimos anos pela sua utilização cada vez maior em substituição à sacarose em virtude do seu poder edulcorante 70% superior e dos benefícios fisiológicos importantes, como metabolismo independente da insulina, sendo adequada para alimentos fabricados especificamente para diabéticos
Publicado em: 2010
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7. CaracterizaÃÃo e propriedades funcionais de bolos de chocolate formulados com raÃzes tuberosas de yacon(smallanthus sonchifolius)
The yacon (Smallanthus sonchifolius) has been the subject of numerous studies due to its functional properties, related to high levels of bioactive compounds, inulin and fructooligosaccharides (FOS). Studies have shown that diets with high intake of bioactive are directly related to the prevention of various diseases, so a viable alternative is the addition
Publicado em: 2008
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8. Efeitos do nitrogênio no crescimento e no metabolismo de frutanos em Vernonia herbacea (Vell.) Rusby / Effects of nitrogen in growth and fructan metabolism in Vernonia herbacea (Vell.) Rusby
O nitrogênio é um dos elementos mais limitantes no desenvolvimento de plantas. Vernonia herbacea (Vell.) Rusby, Asteraceae do cerrado, possui órgãos subterrâneos (rizóforos) que armazenam frutanos do tipo inulina. Estudos anteriores mostraram que o tratamento com solução nutritiva contendo 1,3 mmol L-1 NO3 - (Nlimitado) promoveu o acúmulo de frutano
Publicado em: 2005
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9. Fructan metabolizing enzymes in Vernonia herbacea (VELL.) Rusby. / Enzimas do metabolismo de frutanos em Vernonia herbacea (VELL.) Rusby.
The occurrence of fructans has been reported in native species of a cerrado area of Reserva Biológica e Estação Experimental de Moji Guaçu. Vernonia herbacea, one of these species, presents underground organs named rhizophores which accumulate fructans of the inulin type as reserve carbohydrate. The seasonal growth pattern exhibited by plants of V. herba
Publicado em: 2003
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10. Nutrição mineral no crescimento e no metabolismo de carboidratos soluveis em Vernonia herbacea (Vell.) Rusby
Vernonia herbacea is a herbaceous, perem1ial Asteraceae, native to the Brazilian cerrado. The plants have underground organs, known as rhizophores, which accumulate :fructans of the inulin type. Fructose polymers have been associated to stress conditions, such as water and nutritional defficiency and low temperatures acting as osmotic regulators for the plan
Publicado em: 2003
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11. Localization of the Enzymes of Fructan Metabolism in Vacuoles Isolated by a Mechanical Method from Tubers of Jerusalem Artichoke (Helianthus tuberosus L.) 1
Vacuoles isolated by a mechanical slicing method from developing tubers of Jerusalem artichoke (Helianthus tuberosus L.) contain activities of the two principal enzymes responsible for fructan synthesis: sucrose-sucrose fructosyl transferase and fructan-fructan fructosyl transferase. Both enzymes are associated with the vacuolar sap and not with the tonoplas
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12. Cloning of Sucrose:Sucrose 1-Fructosyltransferase from Onion and Synthesis of Structurally Defined Fructan Molecules from Sucrose1
Sucrose (Suc):Suc 1-fructosyltransferase (1-SST) is the key enzyme in plant fructan biosynthesis, since it catalyzes de novo fructan synthesis from Suc. We have cloned 1-SST from onion (Allium cepa) by screening a cDNA library using acid invertase from tulip (Tulipa gesneriana) as a probe. Expression assays in tobacco (Nicotiana plumbaginifolia) protop
American Society of Plant Physiologists.