Helianthus Tuberosus
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Development of symbiotic yoghurt and biological evaluation (New Zealand White Rabbits) of its functional properties
Abstract Functional foods are those that bring benefits to human health beyond nutrition such as the prevention of cardiovascular diseases, allergies and intestinal problems. Among the functional foods highly consumed worldwide, yogurt is highlighted, especially in the probiotic and symbiotic versions. The aim of this study was to use the Jerusalem artichok
Food Sci. Technol. Publicado em: 11/04/2019
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2. Isoelectric focusing technique in the determination of Helianthus tuberosus L. varieties / Técnica de focalização isoelétrica na determinação de variedades de Helianthus tuberosus
Estudou-se a aplicação da técnica de focalização isoelétrica na determinação de 29 cultivares de Helianthus tuberosus. A importância nos estudos relacionados a Helianthus tuberosus se deve ao aumento da utilização da inulina, uma fibra não digerível presente em grande quantidade nessa planta, em alimentos dietéticos. A quantidade de inulina var
Publicado em: 2005
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3. Desenvolvimento agrotecnologico da especie Cichorim intybus L
A inulina é um carboidrato de reserva encontrado nas raízes e tubérculos de diversas plantas das famílias Asteraceae e Gramineae dentre outras famílias. Como exemplo pode-se citar as espécies alcachofra de Jerusalém ou topinambur (Helianthus tuberosus), chicória (Cichorium intybus) e dália (Dhalia pinnata). A inulina é constituída de cadeias linea
Publicado em: 2000
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4. Sucrose Synthase, a Cytosolic Enzyme in Protoplasts of Jerusalem Artichoke Tubers (Helianthus tuberosus L.) 1
The exact subcellular location of sucrose synthase (UDP-d-glucose: d-fructose 2-α-d-glucosyltransferase, EC 2.4.1.13) in Helianthus tuberosus tubers was studied by comparison of its activity in protoplasts with that of vacuoles isolated from them. Assuming 100% of the β-N-acetylglucosaminidase activity to be of vacuolar origin, less than 5% of both the suc
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5. STORAGE OF TRUCK CROPS: THE GIRASOLE, HELIANTHUS TUBEROSUS*1
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6. 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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7. Control of Pyrimidine Biosynthesis in Synchronously Dividing Cells of Helianthus tuberosus
Factors with potential for regulating pyrimidine biosynthesis in plant tissue have been explored in quiescent cells of Helianthus tuberosus induced to divide by auxin addition. Investigations confined to the first highly synchronous cell cycle of the tuber explants revealed that the relative activity of asparate carbamoyltransferase (ACTase) to ornithinecarb
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8. Monospecific polyclonal antibodies directed against purified cinnamate 4-hydroxylase from Helianthus tuberosus. Immunopurification, immunoquantitation, and interspecies cross-reactivity.
We recently reported the purification of cinnamic acid 4-hydroxylase (CA4H), a cytochrome P-450 catalyzing the second reaction of the general phenylpropanoid pathway, from Jerusalem artichoke (Helianthus tuberosus L.) (B. Gabriac, D. Werck-Reichhart, H. Teutsch, F. Durst [1991] Arch Biochem Biophys 288: 302-309). Rabbit polyclonal antibodies were raised agai
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9. Factors Affecting Crown Gall Tumorigenesis in Tuber Slices of Jerusalem Artichoke (Helianthus tuberosus, L.) 1
Agrobacterium tumefaciens can induce tumors on thin slices which are excised from Jerusalem artichoke (Helianthus tuberosus) tubers and grown in culture on medium containing minerals and a carbon source. A comparative study was made of the kinetics of cell division in slices under three conditions: (a) slices which were untreated and showed only spontaneous
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10. The Use of Fura-2 Fluorescence to Monitor the Movement of Free Calcium Ions into the Matrix of Plant Mitochondria (Pisum sativum and Helianthus tuberosus).
Purified mitochondria isolated from pea (Pisum sativum L. cv Alaska) stems and Jerusalem artichoke (Helianthus tuberosus L. cv OB1) tubers were loaded with the acetoxymethyl ester of the fluorescent Ca2+ indicator fura-2. This made possible the continuous monitoring of free [Ca2+] in the matrix ([Ca2+]m) without affecting the apparent viability of the mitoch
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11. Purification and Characterization of the Enzymes of Fructan Biosynthesis in Tubers of Helianthus tuberosus Colombia (II. Purification of Sucrose:Sucrose 1-Fructosyltransferase and Reconstitution of Fructan Synthesis in Vitro with Purified Sucrose:Sucrose 1-Fructosyltransferase and Fructan:Fructan 1-Fructosyltransferase).
Sucrose:sucrose 1-fructosyltransferase (1-SST), an enzyme involved in fructan biosynthesis, was purified to homogeneity from tubers of Helianthus tuberosus that were harvested in the accumulation phase. Gel filtration under native conditions predicted a molecular mass of about 67 kD. Electrophoresis or gel filtration under denaturing conditions yielded a 27-
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12. Correlation between Changes in Mitochondrial Membranes of Artichoke Tubers and Their Hardening and Dormancy
Spin labeling studies using mitochondrial membranes of Jerusalem artichoke (Helianthus tuberosus L.) showed that the decrease during winter in the temperatures of the upper and lower lipid transitions correlated with the development of freezing hardiness of the tubers. The killing temperature for tuber tissue reached a minimum of −12 C, about 5 C degrees l