Differentiation of several geographical origins in single-strength Valencia orange juices using quantitative comparison of carotenoid profiles.
Pure Valencia orange (Citrus sinensis) juices (64 samples) from Spain, Israel, Belize, Cuba, and Florida, harvested during two seasons (1996-1997 and 1997-1998), were analyzed for their carotenoid profiles. The detection of saponified carotenoid pigments has been achieved and quantitated using a photodiode array detection monitored at 350, 430, and 486 nm. Carotenoid pigments commonly found in the orange variety Valencia have been separated on a polymeric C-30 column using a ternary gradient as eluent. Pure Valencia juices from oranges grown in Mediterranean regions (Israel and Spain) have a high carotenoid content, expressed in beta-carotene (5-18 and 14-35 mg L(-)(1), respectively), compared to those grown in tropical and subtropical regions (Cuba, Belize, and Florida) (4-10, 2-8, and 5-10 mg L(-)(1), respectively). Quantitative results allowed the differentiation of Valencia variety geographical origins, in particular, the Mediterranean area from tropical and subtropical areas, using multidimensional analyses of carotenoid contents.
Mouly
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Centre de Recherche et de Valorisation des Produits de la Consommation, Parc Club des Aygalades, Bat. A7, Z.I.N. 1207, 35 Boulevard du Capitaine Gèze, 13333 Marseille Cedex 14, France. pierre.mouly@vnumail.com
Gaydou
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Lapierre
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Corsetti
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D001531:Belize; D001628:Beverages; D002338:Carotenoids / Q000032:analysis*; D002853:Chromatography, Liquid; D002957:Citrus / Q000737:chemistry* / Q000592:standards*; D003116:Color; D003462:Cuba; D005431:Florida; D007557:Israel; D013030:Spain
D002338:Carotenoids