Abstract
Abstract BACKGROUND The ultraviolet‐B (UV‐B) radiation can alter grape metabolism during berry development, but little is known on the effect of postharvest UV‐B exposure. In this study, we evaluated the effect of postharvest UV‐B exposure on berry primary and secondary metabolites in four grapevine varieties (Aleatico, Moscato bianco, Sangiovese, and Vermentino) in order to evaluate the possibility to increase the grape quality and its nutraceutical properties. RESULTS The treatment did not significantly affect the berry primary metabolism in terms of organic acids, carbohydrates, and amino acids profile, regardless of the variety. UV‐B exposure reduced the total anthocyanin content, particularly the tri‐substituted and di‐substituted forms in Aleatico and Sangiovese, respectively. An overall negative effect of UV‐B irradiation on the flavonols profile of Aleatico, Moscato bianco, and Vermentino berries was found, whereas it enhanced the quercetin, myricetin and kaempferol concentration in Sangiovese. The free fraction of berry volatile organic compounds increased in UV‐B‐treated Aleatico and Moscato bianco berries, especially C 13 ‐norisoprenoids and volatile phenols, as well as key monoterpenes, such as the linalool derivatives. However, higher concentrations of glycosylated monoterpenes and C 13 ‐norisoprenoids were measured in Sangiovese and Vermentino berries treated with UV‐B. CONCLUSION This study provides new insights on the effect of postharvest UV‐B radiation on berry secondary metabolism, highlighting a different modulation between varieties and suggesting the potential use of this technique to increase some nutraceutical and quality characteristics of grape berry. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Claims 11
Claim · model-written summary
UV-B did not significantly affect organic acid, carbohydrate, or amino acid profiles in grape berries across varieties.
- Taxon
- grapet0
- Treatment
- UV‐Be1
- Outcome
- organic acids, carbohydrates, and amino acids profilee0
- Direction
- did not significantly affecte0
- Qualifier
- regardless of the varietye0
Not reportedComparator
Verbatim
e0“The treatment did not significantly affect the berry primary metabolism in terms of organic acids, carbohydrates, and amino acids profile, regardless of the variety”
e1“UV‐B exposure reduced the total anthocyanin content”
t0“grape (Vitis vinifera L.)”
Claim · model-written summary
UV-B reduced total anthocyanin content, especially tri-substituted forms, in Aleatico.
- Taxon
- grapet0
- Material
- Aleaticoe0
- Treatment
- UV‐B exposuree0
- Outcome
- total anthocyanin contente0
- Direction
- reducede0
- Qualifier
- tri‐substitutede0
Not reportedComparator
Verbatim
e0“UV‐B exposure reduced the total anthocyanin content, particularly the tri‐substituted and di‐substituted forms in Aleatico and Sangiovese, respectively”
t0“grape (Vitis vinifera L.)”
Claim · model-written summary
UV-B reduced total anthocyanin content, especially di-substituted forms, in Sangiovese.
- Taxon
- grapet0
- Material
- Sangiovesee0
- Treatment
- UV‐B exposuree0
- Outcome
- total anthocyanin contente0
- Direction
- reducede0
- Qualifier
- di‐substitutede0
Not reportedComparator
Verbatim
e0“UV‐B exposure reduced the total anthocyanin content, particularly the tri‐substituted and di‐substituted forms in Aleatico and Sangiovese, respectively”
t0“grape (Vitis vinifera L.)”
Claim · model-written summary
UV-B negatively affected the flavonol profile in Aleatico berries.
- Taxon
- grapet0
- Material
- Aleaticoe0
- Treatment
- UV‐B irradiatione0
- Outcome
- flavonols profilee0
- Direction
- negative effecte0
Not reportedComparator
Verbatim
e0“An overall negative effect of UV‐B irradiation on the flavonols profile of Aleatico, Moscato bianco, and Vermentino berries was found”
t0“grape (Vitis vinifera L.)”
Claim · model-written summary
UV-B negatively affected the flavonol profile in Moscato bianco berries.
- Taxon
- grapet0
- Material
- Moscato biancoe0
- Treatment
- UV‐B irradiatione0
- Outcome
- flavonols profilee0
- Direction
- negative effecte0
Not reportedComparator
Verbatim
e0“An overall negative effect of UV‐B irradiation on the flavonols profile of Aleatico, Moscato bianco, and Vermentino berries was found”
t0“grape (Vitis vinifera L.)”
Claim · model-written summary
UV-B negatively affected the flavonol profile in Vermentino berries.
- Taxon
- grapet0
- Material
- Vermentinoe0
- Treatment
- UV‐B irradiatione0
- Outcome
- flavonols profilee0
- Direction
- negative effecte0
Not reportedComparator
Verbatim
e0“An overall negative effect of UV‐B irradiation on the flavonols profile of Aleatico, Moscato bianco, and Vermentino berries was found”
t0“grape (Vitis vinifera L.)”
Claim · model-written summary
UV-B enhanced quercetin, myricetin, and kaempferol concentrations in Sangiovese.
- Taxon
- grapet0
- Material
- Sangiovesee0
- Treatment
- UV‐Bt0
- Outcome
- quercetin, myricetin and kaempferol concentratione0
- Direction
- enhancede0
Not reportedComparator
Verbatim
e0“it enhanced the quercetin, myricetin and kaempferol concentration in Sangiovese”
t0“Postharvest UV‐B exposure drives changes in primary metabolism, phenolic concentration, and volatilome profile in berries of different grape (Vitis vinifera L.) varieties”
Claim · model-written summary
UV-B increased free volatile organic compounds in Aleatico berries.
- Taxon
- grapet0
- Material
- Aleaticoe0
- Treatment
- UV‐B‐treatede0
- Outcome
- free fraction of berry volatile organic compoundse0
- Direction
- increasede0
- Qualifier
- C 13 ‐norisoprenoids and volatile phenolse0
Not reportedComparator
Verbatim
e0“The free fraction of berry volatile organic compounds increased in UV‐B‐treated Aleatico and Moscato bianco berries, especially C 13 ‐norisoprenoids and volatile phenols, as well as key monoterpenes, such as the linalool derivatives”
t0“grape (Vitis vinifera L.)”
Claim · model-written summary
UV-B increased free volatile organic compounds in Moscato bianco berries.
- Taxon
- grapet0
- Material
- Moscato biancoe0
- Treatment
- UV‐B‐treatede0
- Outcome
- free fraction of berry volatile organic compoundse0
- Direction
- increasede0
- Qualifier
- linalool derivativese0
Not reportedComparator
Verbatim
e0“The free fraction of berry volatile organic compounds increased in UV‐B‐treated Aleatico and Moscato bianco berries, especially C 13 ‐norisoprenoids and volatile phenols, as well as key monoterpenes, such as the linalool derivatives”
t0“grape (Vitis vinifera L.)”
Claim · model-written summary
UV-B-treated Sangiovese berries had higher glycosylated monoterpenes and C13-norisoprenoids.
- Taxon
- grapet0
- Material
- Sangiovesee0
- Treatment
- UV‐Be0
- Outcome
- concentrations of glycosylated monoterpenes and C 13 ‐norisoprenoidse0
- Direction
- highere0
Not reportedComparator
Verbatim
e0“higher concentrations of glycosylated monoterpenes and C 13 ‐norisoprenoids were measured in Sangiovese and Vermentino berries treated with UV‐B”
t0“grape (Vitis vinifera L.)”
Claim · model-written summary
UV-B-treated Vermentino berries had higher glycosylated monoterpenes and C13-norisoprenoids.
- Taxon
- grapet0
- Material
- Vermentinoe0
- Treatment
- UV‐Be0
- Outcome
- concentrations of glycosylated monoterpenes and C 13 ‐norisoprenoidse0
- Direction
- highere0
Not reportedComparator
Verbatim
e0“higher concentrations of glycosylated monoterpenes and C 13 ‐norisoprenoids were measured in Sangiovese and Vermentino berries treated with UV‐B”
t0“grape (Vitis vinifera L.)”
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