Abstract:
From the sterol fraction of seed oil from commercial Cucurbita moschata Dutch ('calabacita') Δ5 and Δ7 sterols having saturated and unsaturated side chain were isolated by chromatographic procedures and characterized by spectroscopic (1H and 13C-nuclear magnetic resonance, mass spectrometry) methods. The main components were identified as 24S-ethyl 5α-cholesta- 7,22E-dien-3β-ol (α-spinasterol); 24S-ethyl 5α-cholesta-7,22E,25-trien- 3β-ol (25-dehydrochondrillasterol); 24S-ethyl 5α-cholesta-7,25-dien-3β- ol; 24R-ethyl-cholesta-7-en-3β-ol (Δ7-stigmastenol) and 24-ethyl-cholesta- 7,24(28) dien-3β-ol (Δ(7,24(28))-stigmastadienol).
Registro:
Documento: |
Artículo
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Título: | The sterols of Cucurbita moschata ('calabacita') seed oil |
Autor: | Rodriguez, J.B.; Gros, E.G.; Bertoni, M.H.; Cattaneo, P. |
Filiación: | Depto. de Quim. Orgánica, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina Depto. de Quim. Orgánica, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
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Palabras clave: | sterol; vegetable oil; article; gas chromatography; lipid analysis; mass spectrometry; nuclear magnetic resonance; plant seed; Chromatography, High Pressure Liquid; Gas Chromatography-Mass Spectrometry; Magnetic Resonance Spectroscopy; Mass Spectrometry; Molecular Structure; Plant Oils; Seeds; Stereoisomerism; Sterols; Cucurbita moschata |
Año: | 1996
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Volumen: | 31
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Número: | 11
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Página de inicio: | 1205
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Página de fin: | 1208
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DOI: |
http://dx.doi.org/10.1007/BF02524296 |
Título revista: | Lipids
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Título revista abreviado: | LIPIDS
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ISSN: | 00244201
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CODEN: | LPDSA
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CAS: | Plant Oils; Sterols
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244201_v31_n11_p1205_Rodriguez |
Referencias:
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- Bertoni, M.H., Pereyra Gonzalez, A., Cattaneo, P., Estudio sobre frutos de Cucurbita moschata Dutch ("calabacita"). I. Rendimiento en sus partes constitutivas y compositión química general de las pulpas (1994) An. Asoc. Quim. Arg., 82, pp. 125-129
- Bertoni, M.H., Pereyra Gonzalez, A., Cattaneo, P., Estudio sobre frutos de Cucurbita moschata Dutch ("calabacita"). II. Aceite crudo de extractión de semillas. Características y compositión acídica (1994) An. Asoc. Quim. Arg., 82, pp. 131-133
- Bertoni, M.H., Pereyra Gonzalez, A., Cattaneo, P., Estudio sobre frutos de Cucurbita moschata Dutch ("calabacita"). III. Compositión química de la harina de extractión. Obtentión del aislado proteico y su compositión (1994) An. Asoc. Quim. Arg., 82, pp. 135-138
- Akihisa, T., Thakur, S., Rosenstein, F.U., Matsumoto, T., Sterols of Cucurbitaceae. The Configurations at C-24 of 24-Alkyl-Δ5-, Δ7-, and Δ8-Sterols (1986) Lipids, 21, pp. 39-47
- Matsumoto, T., Shigemoto, T., Itoh, T., Occurrence of 24-Ethyl-Δ5-and 24-Ethyl-Δ7-Sterols as C-24 Epimeric Mixtures in Seeds of Cucumis sativus (1983) Phytochemistry, 22, pp. 2622-2624
- Itoh, T., Kikuchi, Y., Tamura, T., Matsumoto, T., Cooccurrence of Chondrillasterol and Spinasterol in Two Cucurbitaceae Seeds as Shown by 13C-NMR (1981) Phytochemistry, 20, pp. 761-764
- Fedeli, E., Lanzani, A., Capella, P., Jacini, G., Triterpene Alcohols and Sterols of Vegetal Oils (1966) J. Am. Oil Chem. Soc., 43, pp. 254-256
- Knights, B.A., Identification of Plant Sterols Using Combined GLC/Mass Spectrometry (1967) J. Gas Chromatog., 5, pp. 273-282
- Arnold, W., Meister, W., Englert, G., Substituents Increments for the 1H-NMR Chemical Shifts of the 18- and 19-Methyl Protons of Steroids. Part II: 9α, 10β (normal)-Steroids (1974) Helv. Chim. Acta, 57, pp. 1559-1567
- Rubinstein, I., Goad, L.J., Clague, A.D.H., Mulhern, L.J., The 200 MHz NMR Spectra of Phytosterols (1976) Phytochemistry, 15, pp. 195-200
- Blunt, J.W., Stothers, J.B., Carbon-13 NMR Studies. Part 69. Carbon-13 NMR Spectra of Steroids, a Survey and Commentary (1977) Org. Magn. Res., 9, pp. 439-464
- Cushley, R.J., Filipenko, J.D., Carbon-13 Fourier Transform NMR. XIII. Reassignment of the Carbon-13 Spectrum of Ergosterol (1976) Org. Magn. Res., 8, pp. 308-309
- Abraham, R.J., Monasteries, J.R., 13C-Nuclear Magnetic Resonance Spectra of Some Ergosta-Dienes and Trienes (1974) J. Chem. Soc. Perkin Trans. II, pp. 662-665
- Itoh, T., Yoshida, K., Tamura, T., Matsumoto, T., Co-occurrence of C-24 Epimeric 24-Ethyl-Δ7-Sterols in the Roots of Trichosantes japonica (1982) Phytochemistry, 21, pp. 727-730
Citas:
---------- APA ----------
Rodriguez, J.B., Gros, E.G., Bertoni, M.H. & Cattaneo, P.
(1996)
. The sterols of Cucurbita moschata ('calabacita') seed oil. Lipids, 31(11), 1205-1208.
http://dx.doi.org/10.1007/BF02524296---------- CHICAGO ----------
Rodriguez, J.B., Gros, E.G., Bertoni, M.H., Cattaneo, P.
"The sterols of Cucurbita moschata ('calabacita') seed oil"
. Lipids 31, no. 11
(1996) : 1205-1208.
http://dx.doi.org/10.1007/BF02524296---------- MLA ----------
Rodriguez, J.B., Gros, E.G., Bertoni, M.H., Cattaneo, P.
"The sterols of Cucurbita moschata ('calabacita') seed oil"
. Lipids, vol. 31, no. 11, 1996, pp. 1205-1208.
http://dx.doi.org/10.1007/BF02524296---------- VANCOUVER ----------
Rodriguez, J.B., Gros, E.G., Bertoni, M.H., Cattaneo, P. The sterols of Cucurbita moschata ('calabacita') seed oil. LIPIDS. 1996;31(11):1205-1208.
http://dx.doi.org/10.1007/BF02524296