The contents of total polyphenolic compounds and trans-resveratrol in white Riesling originated in the Czech Republic
Wine is a significant source of antioxidants in human nutrition. Every glass of wine contains approximately 200 different phenolic compounds, several of which have been noted as antioxidants because they have been shown to slow down the potentially damaging cell oxidation process. In white Riesling...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2004-12-01
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| Series: | Czech Journal of Food Sciences |
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| Online Access: | https://cjfs.agriculturejournals.cz/artkey/cjf-200406-0003_the-contents-of-total-polyphenolic-compounds-and-trans-resveratrol-in-white-riesling-originated-in-the-czech-re.php |
| _version_ | 1828009208579096576 |
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| author | K. Faitová A. Hejtmánková J. Lachman V. Pivec J. Dudjak |
| author_facet | K. Faitová A. Hejtmánková J. Lachman V. Pivec J. Dudjak |
| author_sort | K. Faitová |
| collection | DOAJ |
| description | Wine is a significant source of antioxidants in human nutrition. Every glass of wine contains approximately 200 different phenolic compounds, several of which have been noted as antioxidants because they have been shown to slow down the potentially damaging cell oxidation process. In white Riesling from different wine-growing sub-regions, kinds of wine, years of harvest and vintners, the content of total polyphenols (TP) was determined using spectrophotometric method, and that of trans-resveratrol (R) by HPLC method. The TP content was presented as gallic acid equivalent per litre of wine, and the content of R as trans-resveratrol per litre of wine. TP values in the wine-growing region of Bohemia ranged from 223.0 to 532.7 mg/l (average content 330.3 mg/l), in the wine-growing region of Moravia from 175.0 to 465.0 mg/l (average content 271.7 mg/l), while R values in the wine-growing region of Bohemia ranged from < 0.033 to 0.421 mg/l (average content 0.117 mg/l), in the wine-growing region of Moravia from < 0.033 to 0.875 mg/l (average content 0.123 mg/l). The highest average TP content (370.1 mg/l) and R content (0.262 mg/l) were found in the sub-region Roudnická (the wine-growing region of Bohemia). The harvest year of 1994 was evaluated as that providing the highest average levels of TP (386.5 mg/l) and R (0.201 mg/l). The kind of wine with the highest average TP was the kind of "selected grapes" (327.2 mg/l), while the highest average R content was found in the late harvest wine (0.141 mg/l). The R and TP contents were not significantly affected by vintage, wine-growing sub-region or the kind of wine. The statistically significant correlation between TP and R content was not demonstrated (5.73%). |
| first_indexed | 2024-04-10T08:36:37Z |
| format | Article |
| id | doaj.art-0b9adabab8e74bb5a1ac9c171ec0b587 |
| institution | Directory Open Access Journal |
| issn | 1212-1800 1805-9317 |
| language | English |
| last_indexed | 2024-04-10T08:36:37Z |
| publishDate | 2004-12-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Czech Journal of Food Sciences |
| spelling | doaj.art-0b9adabab8e74bb5a1ac9c171ec0b5872023-02-23T03:26:55ZengCzech Academy of Agricultural SciencesCzech Journal of Food Sciences1212-18001805-93172004-12-0122621522110.17221/3426-CJFScjf-200406-0003The contents of total polyphenolic compounds and trans-resveratrol in white Riesling originated in the Czech RepublicK. Faitová0A. Hejtmánková1J. Lachman2V. Pivec3J. Dudjak4Department of Chemistry, Faculty of Agronomy, Czech University of Agriculture in Prague, Prague, Czech RepublicDepartment of Chemistry, Faculty of Agronomy, Czech University of Agriculture in Prague, Prague, Czech RepublicDepartment of Chemistry, Faculty of Agronomy, Czech University of Agriculture in Prague, Prague, Czech RepublicDepartment of Chemistry, Faculty of Agronomy, Czech University of Agriculture in Prague, Prague, Czech RepublicDepartment of Chemistry, Faculty of Agronomy, Czech University of Agriculture in Prague, Prague, Czech RepublicWine is a significant source of antioxidants in human nutrition. Every glass of wine contains approximately 200 different phenolic compounds, several of which have been noted as antioxidants because they have been shown to slow down the potentially damaging cell oxidation process. In white Riesling from different wine-growing sub-regions, kinds of wine, years of harvest and vintners, the content of total polyphenols (TP) was determined using spectrophotometric method, and that of trans-resveratrol (R) by HPLC method. The TP content was presented as gallic acid equivalent per litre of wine, and the content of R as trans-resveratrol per litre of wine. TP values in the wine-growing region of Bohemia ranged from 223.0 to 532.7 mg/l (average content 330.3 mg/l), in the wine-growing region of Moravia from 175.0 to 465.0 mg/l (average content 271.7 mg/l), while R values in the wine-growing region of Bohemia ranged from < 0.033 to 0.421 mg/l (average content 0.117 mg/l), in the wine-growing region of Moravia from < 0.033 to 0.875 mg/l (average content 0.123 mg/l). The highest average TP content (370.1 mg/l) and R content (0.262 mg/l) were found in the sub-region Roudnická (the wine-growing region of Bohemia). The harvest year of 1994 was evaluated as that providing the highest average levels of TP (386.5 mg/l) and R (0.201 mg/l). The kind of wine with the highest average TP was the kind of "selected grapes" (327.2 mg/l), while the highest average R content was found in the late harvest wine (0.141 mg/l). The R and TP contents were not significantly affected by vintage, wine-growing sub-region or the kind of wine. The statistically significant correlation between TP and R content was not demonstrated (5.73%).https://cjfs.agriculturejournals.cz/artkey/cjf-200406-0003_the-contents-of-total-polyphenolic-compounds-and-trans-resveratrol-in-white-riesling-originated-in-the-czech-re.phpwinewhite rieslingtotal polyphenol contenttrans-resveratrol |
| spellingShingle | K. Faitová A. Hejtmánková J. Lachman V. Pivec J. Dudjak The contents of total polyphenolic compounds and trans-resveratrol in white Riesling originated in the Czech Republic Czech Journal of Food Sciences wine white riesling total polyphenol content trans-resveratrol |
| title | The contents of total polyphenolic compounds and trans-resveratrol in white Riesling originated in the Czech Republic |
| title_full | The contents of total polyphenolic compounds and trans-resveratrol in white Riesling originated in the Czech Republic |
| title_fullStr | The contents of total polyphenolic compounds and trans-resveratrol in white Riesling originated in the Czech Republic |
| title_full_unstemmed | The contents of total polyphenolic compounds and trans-resveratrol in white Riesling originated in the Czech Republic |
| title_short | The contents of total polyphenolic compounds and trans-resveratrol in white Riesling originated in the Czech Republic |
| title_sort | contents of total polyphenolic compounds and trans resveratrol in white riesling originated in the czech republic |
| topic | wine white riesling total polyphenol content trans-resveratrol |
| url | https://cjfs.agriculturejournals.cz/artkey/cjf-200406-0003_the-contents-of-total-polyphenolic-compounds-and-trans-resveratrol-in-white-riesling-originated-in-the-czech-re.php |
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