Abstract
Polyphenoloxidase (PPO) and peroxidase (POD) were evaluated in fresh-cut Fuji apple slices and the effeet of the individual or combined use of ascorbic acid, 4-hexylresorcinol, N-acetylcysteine, and glutathione on their respective activities was determined. Additionally, color changes during storage at 4 degrees C were measured throughout 14 d of storage. PPO activity increased with storage time and was inhibited by the individual use of N-acetylcysteine and glutathione. POD activity in the apple slices was effectively inhibited by the combined use of ascorbic acid with any of the other antibrowning agents. On the other hand, an individual treatment with 1% N-acetylcysteine helped in maintaining the color of fresh-cut apples during 14 d of storage, whereas the use of ascorbic acid was not enough to prevent color deterioration of the apple slices from the 1st day of storage. The results obtained corroborated the effectiveness of other natural antibrowning agents over the traditional use of ascorbic acid in the control of the enzymatic browning in the fresh-cut fruit industry.
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Claims 6
Claim · model-written summary
PPO activity increased with apple storage time.
Verbatim
e0“PPO activity increased with storage time”
t0“Fuji Apples”
Claim · model-written summary
N-acetylcysteine inhibited apple PPO activity.
Not reportedComparator
Verbatim
e0“PPO activity increased with storage time and was inhibited by the individual use of N-acetylcysteine and glutathione”
t0“Fuji Apples”
Claim · model-written summary
Glutathione inhibited apple PPO activity.
Not reportedComparator
Verbatim
e0“PPO activity increased with storage time and was inhibited by the individual use of N-acetylcysteine and glutathione”
t0“Fuji Apples”
Claim · model-written summary
Ascorbic acid combined with other antibrowning agents inhibited POD activity.
- Taxon
- apple
Malus domesticae0 - Treatment
- combined use of ascorbic acid with any of the other antibrowning agentse0
- Outcome
- POD activitye0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“POD activity in the apple slices was effectively inhibited by the combined use of ascorbic acid with any of the other antibrowning agents”
Claim · model-written summary
One percent N-acetylcysteine maintained apple color for 14 days.
- Taxon
- applesMalus domesticae0
- Treatment
- 1% N-acetylcysteinee0
- Outcome
- color of fresh-cut applese0
- Qualifier
- during 14 d of storagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an individual treatment with 1% N-acetylcysteine helped in maintaining the color of fresh-cut apples during 14 d of storage”
Claim · model-written summary
Ascorbic acid failed to prevent apple color deterioration from storage day one.
- Taxon
- appleMalus domesticae0
- Treatment
- ascorbic acide0
- Outcome
- color deterioratione0
- Direction
- not enough to prevente0
- Qualifier
- from the 1st day of storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of ascorbic acid was not enough to prevent color deterioration of the apple slices from the 1st day of storage”
The same questions in other papers
ascorbic acid · quality: postharvest · Malus domestica (apple)Positive and negative results
1 paper in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
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See all 12 papers →ascorbic acid · physiology: antioxidant enzymes · Malus domestica (apple)Results agree
10 papers in the same direction as this paper
- positive
- positive
- positive
7 papers more in this group
See all 11 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.