Abstract
Grape berries were classified according to diameter and total soluble solids (TSS) to study the effect of light and temperature on methoxypyrazines (MPs), glutathione (GSH), and hydroxycinnamates (HCAs) during the ripening of Sauvignon blanc. The light exposure of the fruiting zone was modified within leaf and lateral removal at the phenological stage berry of peppercorn size and no removal (control). In comparison to the control, the concentration of 3-isobutyl-2-methoxypyrazine (IBMP) was below the limit of detection in leaf removal 2 weeks before harvest. Leaf removal had no significant influence on GSH and HCAs in the grape juice at harvest. Berry diameter significantly influenced the concentration of IBMP in the grape juice and did not influence the concentration of GSH and HCAs. At harvest, the concentrations of IBMP in grape juices of similar TSS in the control were 12.6 and 5.2 ng/L in 15.5 and 13.5 mm berry diameter classes, respectively. Furthermore, the study showed that berries of the same diameter were not at the same physiological ripening level (not the same TSS).
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Claims 6
Claim · model-written summary
Leaf removal two weeks before harvest made IBMP concentration in grape juice fall below the limit of detection compared with the control.
- Taxon
- Vitis vinifera
Vitis viniferat0 - Treatment
- leaf removal 2 weeks before harveste1
- Outcome
- concentration of 3-isobutyl-2-methoxypyrazine (IBMP)e1
- Direction
- belowe1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sauvignon blanc (Vitis vinifera L.)”
e1“In comparison to the control, the concentration of 3-isobutyl-2-methoxypyrazine (IBMP) was below the limit of detection in leaf removal 2 weeks before harvest”
Claim · model-written summary
Leaf removal had no significant influence on glutathione and hydroxycinnamates in grape juice at harvest.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- Leaf removale2
- Outcome
- GSH and HCAs in the grape juice at harveste2
- Direction
- no significant influencee2
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sauvignon blanc (Vitis vinifera L.)”
e1“In comparison to the control, the concentration of 3-isobutyl-2-methoxypyrazine (IBMP) was below the limit of detection in leaf removal 2 weeks before harvest”
e2“Leaf removal had no significant influence on GSH and HCAs in the grape juice at harvest”
Claim · model-written summary
Berry diameter significantly influenced IBMP concentration in grape juice.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- Berry diametere3
- Outcome
- concentration of IBMP in the grape juicee3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sauvignon blanc (Vitis vinifera L.)”
e3“Berry diameter significantly influenced the concentration of IBMP in the grape juice and did not influence the concentration of GSH and HCAs”
Claim · model-written summary
Berry diameter did not influence glutathione and hydroxycinnamate concentrations in grape juice.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- Berry diametere3
- Outcome
- concentration of GSH and HCAse3
- Direction
- did not influencee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sauvignon blanc (Vitis vinifera L.)”
e3“Berry diameter significantly influenced the concentration of IBMP in the grape juice and did not influence the concentration of GSH and HCAs”
Claim · model-written summary
At harvest, control grape juices of similar TSS had 12.6 and 5.2 ng/L IBMP in the 15.5 and 13.5 mm berry diameter classes.
- Taxon
- Vitis viniferaVitis viniferat0
- Outcome
- concentrations of IBMP in grape juicese4
- Value
- 12.6 and 5.2 ng/Le4
- Qualifier
- 15.5 and 13.5 mm berry diameter classese4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sauvignon blanc (Vitis vinifera L.)”
e4“the concentrations of IBMP in grape juices of similar TSS in the control were 12.6 and 5.2 ng/L in 15.5 and 13.5 mm berry diameter classes, respectively”
Claim · model-written summary
Berries of the same diameter were not at the same physiological ripening level.
- Taxon
- Vitis viniferaVitis viniferat0
- Outcome
- physiological ripening levele5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sauvignon blanc (Vitis vinifera L.)”
e5“berries of the same diameter were not at the same physiological ripening level (not the same TSS)”
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See all 95 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.