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Biochemical basis of color as an aesthetic quality in Citrus sinensis

Identifieur interne : 002E65 ( Main/Exploration ); précédent : 002E64; suivant : 002E66

Biochemical basis of color as an aesthetic quality in Citrus sinensis

Auteurs : Renate Oberholster [Afrique du Sud] ; A. Keith Cowan [Afrique du Sud] ; Péter Molnar [Hongrie] ; Gy. Toth [Hongrie]

Source :

Journal of agricultural and food chemistry : (Print) [ 0021-8561 ] ; 2001.

RBID : Pascal:01-0164749

Descripteurs français

Pascal (Inist)
- Qualité production, Coloration, Orange, Esthétique, Couleur, Identification, Chromophore, Amélioration génétique, Biosynthèse, Citrus sinensis, Violaxanthine, Citraurine.

English descriptors

KwdEn :
- Aesthetics, Biosynthesis, Carotenoids (analysis), Chromatography, High Pressure Liquid, Chromatography, Thin Layer, Chromophore, Citrus (chemistry), Citrus sinensis, Color, Coloration, Genetic improvement, Identification, Orange, Pigments, Biological (analysis), Production quality, Violaxanthin, Xanthophylls, beta Carotene (analogs & derivatives), beta Carotene (analysis).
MESH :
- chemical , analogs & derivatives : beta Carotene.
- chemical , analysis : Carotenoids, Pigments, Biological, beta Carotene.
- chemistry : Citrus.
- Chromatography, High Pressure Liquid, Chromatography, Thin Layer, Color, Xanthophylls.

Abstract

The biochemical basis of color as an aesthetic quality in mature fruit of navel and Valencia orange (Citrus sinensis) was determined. Saponification of the two major color-imparting components resolved by thin-layer chromatography, followed by reversed-phase high-performance liquid chromatography, revealed that these comprised acyl esters of (9Z)-violaxanthin and β-citraurin. Identification of the chromophores was based on cochromatography and online spectral analysis. The color quality of flavedo of mature fruit was dependent on the content and relative amounts of (9Z)-violaxanthin and β-citraurin. Quantitative results revealed that increased color intensity was associated with a decline in the (9Z)-violaxanthin:β-citraurin ratio from greater than 50 to below 10, an increase in flavedo (9Z)-violaxanthin and β-citraurin content, and that measurement of the mass and ratio of these carotenoids can be used to accurately color-grade orange fruit for local and export markets.

Affiliations:

Afrique du Sud, Hongrie

Le document en format XML

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<front><div type="abstract" xml:lang="en">The biochemical basis of color as an aesthetic quality in mature fruit of navel and Valencia orange (Citrus sinensis) was determined. Saponification of the two major color-imparting components resolved by thin-layer chromatography, followed by reversed-phase high-performance liquid chromatography, revealed that these comprised acyl esters of (9Z)-violaxanthin and β-citraurin. Identification of the chromophores was based on cochromatography and online spectral analysis. The color quality of flavedo of mature fruit was dependent on the content and relative amounts of (9Z)-violaxanthin and β-citraurin. Quantitative results revealed that increased color intensity was associated with a decline in the (9Z)-violaxanthin:β-citraurin ratio from greater than 50 to below 10, an increase in flavedo (9Z)-violaxanthin and β-citraurin content, and that measurement of the mass and ratio of these carotenoids can be used to accurately color-grade orange fruit for local and export markets.</div>
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Biochemical basis of color as an aesthetic quality in Citrus sinensis

Biochemical basis of color as an aesthetic quality in Citrus sinensis

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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