Abstract
Summary The antioxidant activity of seven apple varieties was determined on fresh fruits and processed products (dried fruits and purees) and during storage. The antioxidant activity of apples correlated with the total phenol concentration but not with ascorbic acid concentration. Apple derivatives showed a lower antioxidant activity than the counterparts of the fresh fruits and the occurrence of browning phenomena during processing resulted in lower antioxidant activity. Dried fruits showed higher antioxidant activity per gram of dried matter than fruit purees probably because of the lower total thermal effect of processing. The antioxidant activity of all products increased within the first month of storage, and then declined. The extent of early increase was related to the polyphenol content of the fruit. Packaging conditions further influenced the antioxidant activity increase during storage possibly by affecting the oxygen availability.
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Claims 9
Claim · model-written summary
Apple antioxidant activity correlated with total phenol concentration.
- Taxon
- apples
Malus domesticae0 - Compound
- total phenol concentratione0
- Outcome
- antioxidant activitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The antioxidant activity of apples correlated with the total phenol concentration but not with ascorbic acid concentration”
Claim · model-written summary
Apple antioxidant activity did not correlate with ascorbic acid concentration.
- Taxon
- applesMalus domesticae0
- Compound
- ascorbic acid concentratione0
- Outcome
- antioxidant activitye0
- Direction
- note0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The antioxidant activity of apples correlated with the total phenol concentration but not with ascorbic acid concentration”
Claim · model-written summary
Processed apple derivatives had lower antioxidant activity than fresh fruit.
- Taxon
- AppleMalus domesticae0
- Treatment
- derivativese0
- Outcome
- antioxidant activitye0
- Direction
- lowere0
- Comparator
- fresh fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Apple derivatives showed a lower antioxidant activity than the counterparts of the fresh fruits”
Claim · model-written summary
Browning during processing lowered apple antioxidant activity.
- Taxon
- apple varietiesMalus domesticae1
- Treatment
- browning phenomena during processinge0
- Outcome
- antioxidant activitye0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the occurrence of browning phenomena during processing resulted in lower antioxidant activity”
e1“apple varieties”
Claim · model-written summary
Dried apple fruit had higher antioxidant activity per gram dry matter than puree.
- Taxon
- apple varietiesMalus domesticae1
- Treatment
- Dried fruitse0
- Outcome
- antioxidant activity per gram of dried mattere0
- Direction
- highere0
- Comparator
- fruit pureese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dried fruits showed higher antioxidant activity per gram of dried matter than fruit purees”
e1“apple varieties”
Claim · model-written summary
The first month of storage increased antioxidant activity in all apple products.
- Taxon
- apple varietiesMalus domesticae1
- Outcome
- antioxidant activitye0
- Direction
- increasede0
- Qualifier
- first month of storagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The antioxidant activity of all products increased within the first month of storage”
e1“apple varieties”
Claim · model-written summary
Antioxidant activity declined after the first month of storage.
- Taxon
- apple varietiesMalus domesticae1
- Outcome
- antioxidant activitye0
- Direction
- declinede0
- Qualifier
- thene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The antioxidant activity of all products increased within the first month of storage, and then declined”
e1“apple varieties”
Claim · model-written summary
The early antioxidant activity increase related to fruit polyphenol content.
- Taxon
- apple varietiesMalus domesticae1
- Compound
- polyphenol contente0
- Outcome
- extent of early increasee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extent of early increase was related to the polyphenol content of the fruit”
e1“apple varieties”
Claim · model-written summary
Packaging conditions influenced the rise in antioxidant activity during storage.
- Taxon
- apple varietiesMalus domesticae1
- Treatment
- Packaging conditionse0
- Outcome
- antioxidant activity increasee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Packaging conditions further influenced the antioxidant activity increase during storage”
e1“apple varieties”
The same questions in other papers
processing · quality: phytochemicals · Malus domestica (apple)Positive and negative results
9 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- negative
- negative
12 papers more in this group
See all 16 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.