Steviol
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Substituting sucralose with rebaudioside A in soy foods: equivalent sweetness, physicochemical analysis, microbiological assessment and acceptance test
Abstract Stevia rebaudiana (Bert.) Bertoni contains steviol glycosides with emphasis to rebaudioside A, which presents a stronger sweet flavor, more stability, good solubility and lower bitter residual taste, which benefits its application in foods and drinks. The objective of this study was to determine the equivalent amount of rebaudioside A necessary to p
Food Sci. Technol. Publicado em: 2020-12
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2. Diterpenes and a new benzaldehyde from the mangrove plant Rhizophora mangle
ABSTRACT This work describes the isolation, by high-speed counter-current chromatography, of the diterpenes manool, jhanol and steviol and the benzaldehyde p-oxy-2-ethylhexyl benzaldehyde from the stilt roots hexane extract of the mangrove plant Rhizophora mangle L., Rhizophoraceae. For this, a non-aqueous biphasic solvent system composed of hexane–acetoni
Rev. bras. farmacogn.. Publicado em: 2017-04
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3. Morpho-anatomical study of Stevia rebaudiana roots grown in vitro and in vivo
ABSTRACT Stevia rebaudiana (Bertoni) Bertoni, Asteraceae, is used as a food additive because its leaves are a source of steviol glycosides. There are examples of tissue culture based on micropropagation and phytochemical production of S. rebaudiana leaves but there are few studies on adventitious root culture of S. rebaudiana. More than 90% of the plants use
Rev. bras. farmacogn.. Publicado em: 2017-02
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4. Development of HPLC Analytical Techniques for Diterpene Glycosides from Stevia rebaudiana (Bertoni) Bertoni: Strategies to Scale-Up
Stevia rebaudiana is a plant well-known as a source of dozens of high potency non-caloric natural sweeteners, many of them still uncharacterized. Herein, we describe the development of several routine HPLC (high performance liquid chromatography) analytical techniques to better separate steviol glycosides. Different stationary phases/columns were used: rever
J. Braz. Chem. Soc.. Publicado em: 2016-08
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5. Preparation of Derivatives of Betulinic Acid, Steviol and Isosteviol and Evaluation of Antitrypanosomal and Antimalarial Activities
Derivatives of steviol, isosteviol and betulinic acid were prepared and tested in vitro against Plasmodium falciparum W2 (chloroquine-resistant) and Trypanosoma cruzi. The best results against P. falciparum were found for the betulinic acid derivatives 3-[(2,4-dinitrophenyl)hydrazono]lup-20(29)-en-28-oic acid and 3-hydroxy-20-[(2,4-dinitrophenyl)hydrazono]-2
J. Braz. Chem. Soc.. Publicado em: 2016-06
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6. Evaluation of the potential use of rebaudioside-A as sweetener for diet jam
Sweeteners based on stevia extract contain a series of diterpene glycosides derivatives from steviol, standing out the rebaudioside-A. There is no tabletop sweeteners in the market formulated purely with rebaudioside-A yet, so its use in foods depends on the development of new products followed by physicochemical and sensory evaluations. This work presents t
Food Sci. Technol. Publicado em: 24/09/2013
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7. O efeito do esteviol, um glicosídeo da Stevia rebaudiana, no clearance da glicose em ratos
Stevia rebaudiana, uma planta da América do Sul usada como adoçante natural, parece exercer efeitos benéficos para a saúde humana, incluindo ação anti-hipertensiva e anti-hiperglicêmica. No presente trabalho objetivamos avaliar a excreção renal do esteviol, uma aglicona extraída das folhas de S. rebaudiana, e elucidar a participação deste compost
Brazilian Journal of Biology. Publicado em: 2009-05
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8. Biotransformation of steviol derivatives by Aspergillus niger and Fusarium moniliforme
Derivados do esteviol foram submetidos a biotransformações por fungos. O ent-11beta,13-diidróxi-15,16-epoxicauran-19-oato de metila foi hidroxilado em C-11 por Aspergillus niger enquanto que o ácido ent-16beta-hidróxibaierano-19-óico foi hidroxilado em C-6 e C-7 pelo Fusarium moniliforme. A hidroxilação em posições não ativadas do esqueleto carbô
Journal of the Brazilian Chemical Society. Publicado em: 2005-04
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9. Metabolically activated steviol, the aglycone of stevioside, is mutagenic.
Stevioside, a constituent of Stevia rebaudiana, is commonly used as a noncaloric sugar substitute in Japan. Consistent with reports in the literature, we have found that stevioside is not mutagenic as judged by utilization of Salmonella typhimurium strain TM677, either in the presence or in the absence of a metabolic activating system. Similar negative resul
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10. Evidence for Phytochrome Regulation of Gibberellin A20 3β-Hydroxylation in Shoots of Dwarf (lele) Pisum sativum L. 1
The effect of light on the dwarfing allele, le, in Pisum sativum L. was tested as the growth response to gibberellins prior to or beyond the presumed block in the gibberellin biosynthetic pathway. The response to the substrate (GA20), the product (GA1), and a nonendogenous early precursor (steviol) was compared in plants bearing the normal Le and the deficie