Abstract
Our work was focused on the study of the antioxidant properties of grapevine seeds. We monitored the grapevine seeds of 6 cultivars of Vitis vinifera, L. (Nativa, Kofranka, Blaufränkish, Marlen, Cabernet Moravia and Italian Riesling). Antioxidant activity was determined by three principally different methods (DPPH, ABTS and FRAP), the content of the total polyphenolic compounds was determined by the Folin ciocalteu method, and the content of the total flavanols was determined by DMACA reagent (p-dimethylaminocinnamaldehyde). Results are presented as an equivalent of gallic acid in g.L-1, respectively were expressed as g.L-1 of catechin equivalents (DMACA method). The highest values of antioxidant activity were measured in the cultivar Nativa (DPPH - 7.75 g.L-1, ABTS - 4.888 g.L-1, FRAP - 4.25 g.L-1). Conversely, the lowest values of antioxidant activity were detected in the cultivar Kofranka (DPPH - 7.08 g.L-1, ABTS - 4.17 g.L-1, FRAP - 4.55 g.L-1). Cultivar Nativa also reached the highest content of flavonols (3.77 g.L-1). The highest measured values of the content of total polyphenolic compounds were identified in the cultivar Cabernet Moravia (15.2 g.L-1 of GAE). Conversely, the lowest values of the content of total polyphenolic compounds were detected in the cultivar Nativa (8.04 g.L-1). Pearson correlation coefficients were calculated for the existing values between antioxidant activity (DPPH, ABTS, FRAP), contents of flavonols, and contents of total polyphenols. The highest correlation coefficient was found between the DPPH and ABTS methods; specifically, it was 0.857.
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Claims 10
Claim · model-written summary
Nativa had the highest DPPH antioxidant activity, 7.75 g.L-1.
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest values of antioxidant activity were measured in the cultivar Nativa (DPPH - 7.75 g.L-1, ABTS - 4.888 g.L-1, FRAP - 4.25 g.L-1).”
t0“grapevine seeds”
Claim · model-written summary
Nativa had the highest ABTS antioxidant activity, 4.888 g.L-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest values of antioxidant activity were measured in the cultivar Nativa (DPPH - 7.75 g.L-1, ABTS - 4.888 g.L-1, FRAP - 4.25 g.L-1).”
t0“grapevine seeds”
Claim · model-written summary
Nativa was reported with a highest FRAP antioxidant value of 4.25 g.L-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest values of antioxidant activity were measured in the cultivar Nativa (DPPH - 7.75 g.L-1, ABTS - 4.888 g.L-1, FRAP - 4.25 g.L-1).”
t0“grapevine seeds”
Claim · model-written summary
Kofranka had the lowest DPPH antioxidant activity, 7.08 g.L-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest values of antioxidant activity were detected in the cultivar Kofranka (DPPH - 7.08 g.L-1, ABTS - 4.17 g.L-1, FRAP - 4.55 g.L-1).”
t0“grapevine seeds”
Claim · model-written summary
Kofranka had the lowest ABTS antioxidant activity, 4.17 g.L-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest values of antioxidant activity were detected in the cultivar Kofranka (DPPH - 7.08 g.L-1, ABTS - 4.17 g.L-1, FRAP - 4.55 g.L-1).”
t0“grapevine seeds”
Claim · model-written summary
Kofranka was reported with a lowest FRAP antioxidant value of 4.55 g.L-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest values of antioxidant activity were detected in the cultivar Kofranka (DPPH - 7.08 g.L-1, ABTS - 4.17 g.L-1, FRAP - 4.55 g.L-1).”
t0“grapevine seeds”
Claim · model-written summary
Nativa had the highest flavonol content, 3.77 g.L-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivar Nativa also reached the highest content of flavonols (3.77 g.L-1).”
t0“grapevine seeds”
Claim · model-written summary
Cabernet Moravia had the highest total polyphenolic content, 15.2 g.L-1 of GAE.
- Material
- Cabernet Moraviae0
- Outcome
- content of total polyphenolic compoundse0
- Direction
- higheste0
- Value
- 15.2 g.L-1 of GAEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest measured values of the content of total polyphenolic compounds were identified in the cultivar Cabernet Moravia (15.2 g.L-1 of GAE).”
t0“grapevine seeds”
Claim · model-written summary
Nativa had the lowest total polyphenolic content, 8.04 g.L-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest values of the content of total polyphenolic compounds were detected in the cultivar Nativa (8.04 g.L-1).”
t0“grapevine seeds”
Claim · model-written summary
The DPPH and ABTS methods had the highest reported correlation coefficient, 0.857.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest correlation coefficient was found between the DPPH and ABTS methods; specifically, it was 0.857.”
t0“grapevine seeds”