Phenolic Composition and Color of Single Cultivar Young Red Wines Made with Mencia and Alicante-Bouschet Grapes in AOC Valdeorras (Galicia, NW Spain)
| Autor: | Encina Gutiérrez, Manuel M. Losada, Eugenio Revilla |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Vintage
lcsh:TX341-641 01 natural sciences young red wines phenolic composition color anthocyanins HPLC Wine color chemistry.chemical_compound 0404 agricultural biotechnology Malolactic fermentation Cultivar Food science lcsh:RC620-627 Hue Wine 010401 analytical chemistry 04 agricultural and veterinary sciences 040401 food science 0104 chemical sciences Horticulture lcsh:Nutritional diseases. Deficiency diseases Geography chemistry Anthocyanin Composition (visual arts) lcsh:Nutrition. Foods and food supply Food Science |
| Zdroj: | Beverages, Vol 2, Iss 3, p 18 (2016) Beverages; Volume 2; Issue 3; Pages: 18 |
| ISSN: | 2306-5710 |
| Popis: | Single cultivar wines made with two different red grape cultivars from AOC Valdeorras (Galicia, NW Spain), Mencia and Alicante Bouschet, were studied with the aim of determining their color and phenolic composition. Two sets of analyses were made on 30 wine samples of 2014 vintage, after malolactic fermentation took place, to evaluate several physicochemical characteristics from these wines related to color and polyphenols. Several parameters related with color and the general phenolic composition of wines (total phenols index, color intensity, hue, total anthocyans, total anthocyanins, colored anthocyanins, chemical age index, and total tannins) were determined by UV-VIS spectrophotometry. Those analyses revealed that Alicante Bouschet wines presented, in general, a higher content of polyphenols and a more intense color than Mencia wines. Using HPLC-DAD, five anthocyanin monoglucosides and nine acylated anthocyanins were identified in both types of wine; each type of wine showed a distinctive anthocyanin fingerprint, as Alicante Bouschet wines contained a higher proportion of cyanidin-derived anthocyanins. Multivariate statistic studies were performed to both datasets to explore relationships among variables and among samples. These studies revealed relationships among several variables considered, and were capable to group the samples in two different classes using principal component analysis (PCA). |
| Databáze: | OpenAIRE |
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