Base de datos : ins
Búsqueda : CUCURBITA [Descritor de assunto]
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Id:8317
Autor:Carbone, V; Montoro, P; De Tommasi, N; Pizza, C
Título:Analysis of flavonoids from Cyclanthera pedata fruits by liquid chromatography/electrospray mass spectrometry^ien ..-
Fuente:London; Elsevier Science; 2002. 295-304 p. ^btab, ^bgraf.
Resumen:A liquid chromatography/mass spectrometry (LC/MS) based method was developed for the characterization of fruits of Cyclanthera pedata Scrabs (Caigua), a Peruvian food and medicinal plant. This method is based on the separation of flavonoid glycosides present in the methanolic extracts from C. pedata fruits using high performance liquid chromatography (HPLC) followed by detection with electrospray ionization mass spectrometry (ESI/MS). Chromatographic separation of the analytes of interest was achieved on a Symmetry C-18 column with detection in positive ion mode. Calibration graphs were obtained by determining the area ratio between external standard of each major compound and the internal standard naringine. Due to the sensitivity and the repeatability of the assay, this method is suitable for industrial quality control of raw materials and final products. (AU)^ien.
Descriptores:Cucurbita
Flavonoides
Plantas Medicinales
Límites:Humanos
Localización:PE14.1


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Id:8316
Autor:Montoro, P; Carbone, V; De Simone, F; Pizza, C; De Tommasi, N
Título:Studies on the constituents of Cyclanthera pedata fruits: isolation and structure elucidation of new flavonoid glycosides and their antioxidant activity^ien ..-
Fuente:Washington; American Chemical Society; 2001. 5156-60 p. ^bgraf, ^btab.
Resumen:The isolation of six flavon glycosides (1-6), among them four new natural compounds (1-4), from the CHCl(3)/MeOH extract of the fruits of Cyclanthera pedata is reported. All of the structures were elucidated by spectroscopic methods, including the concerted application of one-dimensional ((1)H, (1)H TOCSY, (13)C, and (13)C DEPT-NMR) and two-dimensional NMR techniques (DQF-COSY, HSQC, and HMBC). For all of the isolated compounds the antioxidant activity was determined by measuring the free radical scavenging activity, using the Trolox equivalent antioxidant capacity (TEAC) method, and the coupled oxidation of beta-carotene and linoleic acid. (AU)^ien.
Descriptores:Cucurbitaceae
Cucurbita
Flavonas
Antioxidantes
Límites:Humanos
Localización:PE14.1


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Id:8315
Autor:De Tommasi, N; De Simone, F; Speranza, G; Pizza, C
Título:Studies on the constituents of Cyclanthera pedata fruits: isolation and structure elucidation of new triterpenoid saponins^ien ..-
Fuente:Washington; American Chemical Society; 1999. 4512-9 p. ^btab, ^bgraf.
Resumen:The isolation of nine triterpenoid saponins (1-9), among them six new natural compounds (1-6), from the MeOH extract of the fruits of Cyclanthera pedata is reported. All of the structures were elucidated by spectroscopic methods, including the concerted application of one-dimensional (1)H-(1)H total correlation spectroscopy, (1)H-(1)H nuclear Overhauser effect spectroscopy), and (13)C-(13)C DEPT-NMR and two-dimensional NMR techniques (double-quantum filtered correlated spectroscopy, rotating-frame Overhauser enhancement spectroscopy, heteronuclear single quantum coherence, and heteronuclear multiple bond correlation). A comparative study of seeds and fruits has been also carried out. (AU)^ien.
Descriptores:Cucurbitaceae
Cucurbita
Frutas
Perú
Límites:Humanos
Localización:PE14.1


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Id:3951
Autor:Sarabia Nuñez, Consuelo
Título:Análisis químico bromatológico de Cucurbita Máxima ("Loche"): influencia de la cocción sobre sus componentes ..-
Fuente:Lima; s.n; 1956. 29 p. ilus.
Tese:Presentada la Universidad Nacional Mayor de San Marcos. Facultad de Farmacia y Bioquímica para obtención del grado de Bachiller.
Descriptores:Cucurbita/química
Valor Nutritivo
Análisis de los Alimentos
Localización:PE14.2, T/CENAN-00060



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