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https://hdl.handle.net/123456789/814| Τύπος: | Άρθρο σε επιστημονικό περιοδικό |
| Τίτλος: | Tannin content and antioxidant capacity of five Greek red grapes varieties |
| Συγγραφέας: | [EL] Κυραλέου, Μαρία[EN] Kyraleou, Maria [EL] Γκανίδη, Ευγενία[EN] Gkanidi, Eugenia [EL] Κουνδουράς, Στέφανος[EN] Koundouras, Stefanos [EL] Καλλίθρακα, Σταματίνα[EN] Kallithraka, Stamatina |
| Ημερομηνία: | 13/12/2019 |
| Περίληψη: | Tannins are located in skins and seeds and are responsible for important sensory and quality attributes of red grapes and wines, such as astringency, bitterness and colour stability. However, little is known regarding Greek Vitis Vinifera varieties. The aim of this study is to evaluate the grape phenolic content and to present data that may contribute to the development of suitable winemaking technics for these varieties. In this study berry attributes, skin and seed content of tannins and antioxidant capacity from five Greek Vitis Vinifera varieties, namely Mavrotragano, Mandilaria, Kotsifali, Agiorgitiko and Xinomavro were analyzed. Skins and seeds were removed from berries and different solvents were used for the extraction of tannins. For tannin estimation, the protein precipitation assay using bovine serum albumin was employed. Antioxidant capacity of the grape tannins was also determined, by the 2,2'-diphenyl-1-picrylhydrazyl radical scavenging method, in skin and seed extracts. Significant differences were observed in berry weight and the distribution of berry component mass in mature berries, % skin per berry and % seed per berry weight ratio, among the different varieties. Mandilaria and Kotsifali had the heavier berries while the higher contribution of skins and seeds in berry was observed in Agiorgitiko and Mavrotragano grapes respectively. Although skins were in higher ratio from seeds per berry, in four out of five varieties, seed tannins had the higher contribution on total tannins per berry. According to the results, the higher content of seed tannins in berries was determined in Mandilaria and the lower in Kotsifali. Finally, varieties with high concentrations of tannins, Mandilaria and Mavrotragano, also demonstrated significant high values of antioxidant capacity. |
| Γλώσσα: | Αγγλικά |
| Σελίδες: | 8 |
| DOI: | 10.5073/vitis.2019.58.special-issue.69-75 |
| ISSN: | 0042-7500 |
| Θεματική κατηγορία: | [EL] Άλλες Γεωπονικές Επιστήμες[EN] Other Agricultural Sciences |
| Λέξεις-κλειδιά: | antioxidant capacity; DPPH; Greek winegrape varieties; σταφύλια; ταννίνες; αντιοξειδωτική ικανότητα; Ελληνικές ποικιλίες σταφυλιών; Μανδηλαριά; Μαυροτράγανο; Κοτσιφάλι; Ξινόμαυρο; Αγιωργίτικο; BSA method; tannins; grapes |
| Κάτοχος πνευματικών δικαιωμάτων: | © The author(s). |
| Όροι και προϋποθέσεις δικαιωμάτων: | This is an Open Access article distributed under the terms of the Creative Commons Attribution Share-Alike License (http://creative-commons.org/licenses/by-sa/4.0/). |
| Διατίθεται ανοιχτά στην τοποθεσία: | https://ojs.openagrar.de/index.php/VITIS/article/view/14825 |
| Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη: | https://ojs.openagrar.de/index.php/VITIS/article/view/14825 |
| Ηλεκτρονική διεύθυνση περιοδικού: | https://ojs.openagrar.de/index.php/VITIS |
| Τίτλος πηγής δημοσίευσης: | VITIS Journal of Grapevine Research |
| Τεύχος: | Special issue |
| Τόμος: | 58 |
| Σελίδες τεκμηρίου (στην πηγή): | 69-75 |
| Σημειώσεις: | First author is supported by State Scholarships Foundation of Greece (IKY).The authors would like also to express their gratitude to the Greek wineries for providing grape berries for this study |
| Εμφανίζεται στις συλλογές: | Μεταδιδακτορικοί ερευνητές |
Αρχεία σε αυτό το τεκμήριο:
| Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
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| Kyraleou 2019, Tannin content and antioxidant capacity of five Greek red grape varieties.pdf | Article | 854.3 kB | Adobe PDF | - |  | Δείτε/ανοίξτε |