Abstract
Antioxidant activity, total phenolic content, anthocyanin content, and six other fruit characters including titratable acid concentration, soluble solids, firmness, and percentage of bruised berries were determined for nine blueberry (Vaccinium L. sp.) cultivars at harvest and at various postharvest intervals after storage at 5 degrees C. Berries from MSU-58, Brigitta, and Legacy stored successfully for 7 weeks, Bluegold stored for 3-5 weeks, Bluecrop, Elliott, and Nelson stored for 3 weeks, and Jersey and Little Giant stored for fewer than 3 weeks. During the time they retained marketable quality, one cultivar (MSU-58) demonstrated a 29% increase in antioxidant activity. None of the cultivars showed a significant decrease from the harvest antioxidant activity value during storage. Antioxidant activity, total phenolic content, and anthocyanin content were strongly correlated with each other (r = 0.87-0.99, P < 0.01). All three parameters were moderately correlated with soluble solids (r = 0.47, P < or =0.05; r = 0.44, P < or = 0.05; and r = 0.64, P < or = 0.01, respectively), and antioxidant activity and total phenolic content were both moderately correlated with pH (r = 0.53 and 0.49, respectively; P < or = 0.05). However, antioxidant activity, total phenolic content, and anthocyanin content showed no correlation with firmness, percent severely bruised berries, or weight loss. Antioxidant activity and total phenolic content at harvest both correlated with titratable acidity at harvest (r = 0.68, P < or = 0.05 and r = 0.70, P < or = 0.05, respectively) on a cultivar mean basis. Berries from Elliott were also harvested from plants at two levels of bush ripeness (30-50% and 60-80% ripe berries on plants) and separated into three fruit maturity classes on the basis of percent blue color. The level of bush ripeness had no significant effect on antioxidant activity, total phenolic content, or anthocyanin content; however, fruit maturity had a significant effect on antioxidant activity, total phenolic content, and anthocyanin content, and bush ripeness x fruit maturity interactions were significant for these three traits. Berries with 50-75% blue coloration harvested from bushes with 60-80% mature fruit showed a significant increase in antioxidant activity, total phenolic content, and anthocyanin content during the first 3 weeks in storage. Our results demonstrate that increases in antioxidant activity, total phenolic content, and anthocyanin content may occur in the blueberry during cold storage and are cultivar-dependent. The increases that occur in immature fruit, such as in Elliott, may be advantageous for producers who wish to delay marketing of the fruit.
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Claims 15
Claim · model-written summary
MSU-58, Brigitta and Legacy berries retained marketable quality for 7 weeks.
Verbatim
e0“Berries from MSU-58, Brigitta, and Legacy stored successfully for 7 weeks”
t0“Changes in Fruit Antioxidant Activity among Blueberry Cultivars during Cold-Temperature Storage”
Claim · model-written summary
Bluegold berries stored successfully for 3-5 weeks.
Verbatim
t0“Blueberry”
e0“Bluegold stored for 3-5 weeks”
Claim · model-written summary
Bluecrop, Elliott and Nelson berries stored successfully for 3 weeks.
Verbatim
t0“Blueberry”
e0“Bluecrop, Elliott, and Nelson stored for 3 weeks”
Claim · model-written summary
Jersey and Little Giant berries stored for fewer than 3 weeks.
Verbatim
t0“Blueberry”
e0“Jersey and Little Giant stored for fewer than 3 weeks”
Claim · model-written summary
MSU-58 antioxidant activity increased 29% during marketable storage.
- Taxon
- Blueberryt0
- Material
- MSU-58e0
- Treatment
- During the time they retained marketable qualitye0
- Outcome
- antioxidant activitye0
- Direction
- increasee0
- Value
- 29%e0
Not reportedComparator
Verbatim
t0“Blueberry”
e0“During the time they retained marketable quality, one cultivar (MSU-58) demonstrated a 29% increase in antioxidant activity”
Claim · model-written summary
No cultivar showed a significant antioxidant activity decrease during storage relative to harvest.
Verbatim
t0“Blueberry”
e0“None of the cultivars showed a significant decrease from the harvest antioxidant activity value during storage”
Claim · model-written summary
Antioxidant activity, total phenolics and anthocyanins were strongly intercorrelated.
- Taxon
- Blueberryt0
- Organ / stage
- Fruitt1
- Outcome
- Antioxidant activity, total phenolic content, and anthocyanin contente0
- Value
- r = 0.87-0.99e0
Not reportedDirection
Verbatim
t0“Blueberry”
e0“Antioxidant activity, total phenolic content, and anthocyanin content were strongly correlated with each other (r = 0.87-0.99, P < 0.01)”
t1“Changes in Fruit Antioxidant Activity among Blueberry Cultivars during Cold-Temperature Storage”
Claim · model-written summary
Antioxidant activity, total phenolics and anthocyanins were moderately correlated with soluble solids.
Not reportedDirection
Verbatim
t0“Blueberry”
e0“All three parameters were moderately correlated with soluble solids (r = 0.47, P < or =0.05; r = 0.44, P < or = 0.05; and r = 0.64, P < or = 0.01, respectively)”
t1“Changes in Fruit Antioxidant Activity among Blueberry Cultivars during Cold-Temperature Storage”
Claim · model-written summary
Antioxidant activity and total phenolics were moderately correlated with pH.
Not reportedDirection
Verbatim
t0“Blueberry”
e0“antioxidant activity and total phenolic content were both moderately correlated with pH (r = 0.53 and 0.49, respectively; P < or = 0.05)”
t1“Changes in Fruit Antioxidant Activity among Blueberry Cultivars during Cold-Temperature Storage”
Claim · model-written summary
Antioxidant activity, phenolics and anthocyanins were uncorrelated with firmness, severe bruising and weight loss.
- Taxon
- Blueberryt0
- Organ / stage
- Fruitt1
- Outcome
- firmness, percent severely bruised berries, or weight losse0
Not reportedDirection
Verbatim
t0“Blueberry”
e0“antioxidant activity, total phenolic content, and anthocyanin content showed no correlation with firmness, percent severely bruised berries, or weight loss”
t1“Changes in Fruit Antioxidant Activity among Blueberry Cultivars during Cold-Temperature Storage”
Claim · model-written summary
Harvest antioxidant activity and total phenolics correlated with harvest titratable acidity across cultivar means.
- Taxon
- Blueberryt0
- Organ / stage
- Fruitt1
- Outcome
- titratable acidity at harveste0
- Qualifier
- on a cultivar mean basise0
Not reportedDirection
Verbatim
t0“Blueberry”
e0“Antioxidant activity and total phenolic content at harvest both correlated with titratable acidity at harvest (r = 0.68, P < or = 0.05 and r = 0.70, P < or = 0.05, respectively) on a cultivar mean basis”
t1“Changes in Fruit Antioxidant Activity among Blueberry Cultivars during Cold-Temperature Storage”
Claim · model-written summary
Bush ripeness did not significantly affect the three antioxidant and phenolic traits.
- Taxon
- Blueberryt0
- Organ / stage
- bush ripenesse0
- Outcome
- antioxidant activity, total phenolic content, or anthocyanin contente0
- Direction
- no significant effecte0
Not reportedMaterial
Verbatim
t0“Blueberry”
e0“The level of bush ripeness had no significant effect on antioxidant activity, total phenolic content, or anthocyanin content”
Claim · model-written summary
Fruit maturity significantly affected antioxidant activity, phenolics and anthocyanins.
- Taxon
- Blueberryt0
- Organ / stage
- fruit maturitye0
- Outcome
- antioxidant activity, total phenolic content, and anthocyanin contente0
Not reportedDirection
Verbatim
t0“Blueberry”
e0“fruit maturity had a significant effect on antioxidant activity, total phenolic content, and anthocyanin content”
Claim · model-written summary
Bush ripeness and fruit maturity interacted significantly for the three traits.
Not reportedDirection
Verbatim
t0“Blueberry”
e0“bush ripeness x fruit maturity interactions were significant for these three traits”
Claim · model-written summary
Partially blue Elliott berries from 60-80% mature bushes increased antioxidant activity, phenolics and anthocyanins in the first 3 storage weeks.
- Taxon
- Blueberryt0
- Treatment
- during the first 3 weeks in storagee0
- Outcome
- antioxidant activity, total phenolic content, and anthocyanin contente0
- Direction
- increasee0
- Qualifier
- Berries with 50-75% blue coloration harvested from bushes with 60-80% mature fruite0
Not reportedComparator
Verbatim
t0“Blueberry”
e0“Berries with 50-75% blue coloration harvested from bushes with 60-80% mature fruit showed a significant increase in antioxidant activity, total phenolic content, and anthocyanin content during the first 3 weeks in storage”
The same questions in other papers
storage · quality: phytochemicals · VacciniumPositive and negative results
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- no effect
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See all 18 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.