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Determination of Carotenoid Profiles in Grapes, Musts, and Fortified Wines from Douro Varieties ofVitis vinifera

beta-Carotene and six xanthophylls (lutein, neoxanthin, violaxanthin, luteoxanthin, cryptoxanthin, and echinenone) have been identified and semiquantitatively or quantitatively determined in musts and port wines for the first time. An HPLC method was developed and compared with that of one based on thin layer cromatography with scanning densitometry. The most abundant carotenoids present in red grape varieties are beta-carotene and lutein. In wines, significant quantities of violaxanthin, luteoxanthin, and neoxanthin were found. This study was done with berries (skin and pulp), musts, and fortified wines. Some experiments were performed to follow carotenoid content from grapes to wines. Although the levels of beta-carotene and lutein found in fortified wines were lower than those found in musts, other xanthophylls, such as neoxanthin, violaxanthin, and luteoxanthin, exist in appreciable amounts in young ports.
- Catholic University of Portugal Portugal
- Universidade Católica Portuguesa Portugal
- Cadi Ayyad University Morocco
- University of Cádiz Spain
Ethanol, Wine composition, Reproducibility of Results, Wine, Carotenoids, Fermentation, Vitis, Chromatography, Thin Layer, Aroma precursors, Chromatography, High Pressure Liquid, Winemaking
Ethanol, Wine composition, Reproducibility of Results, Wine, Carotenoids, Fermentation, Vitis, Chromatography, Thin Layer, Aroma precursors, Chromatography, High Pressure Liquid, Winemaking
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).51 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 10% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Top 10% impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Top 10% visibility views 78 download downloads 24 - 78views24downloads
Data source Views Downloads Repositório Institucional da Universidade Católica Portuguesa 78 24


