Abstract
The inhibiting effect of ascorbic acid, citric acid and sodium chloride on Polyphenoloxidase (PPO) of Golden Delicious apple cubes was studied. Dipping in ascorbic acid (0.2-10 g/L range) and in NaCl (0.2-1 g/L range) solutions for 5 min increases the PPO activity. Citric acid solutions (0.2-10 g/L range) have little or no inhibition of PPO. A 90-100% PPO inhibition was obtained with a 5 min dip in mixtures of ascorbic acid and citric acid (10 + 2 g/L), and of ascorbic acid and sodium chloride (10 + 0.5 g/L).
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Claims 5
Claim · model-written summary
Ascorbic acid dips increased apple PPO activity.
- Taxon
- apple
Malus domesticat0 - Treatment
- ascorbic acid (0.2-10 g/L range)e0
- Outcome
- PPO activitye0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping in ascorbic acid (0.2-10 g/L range) and in NaCl (0.2-1 g/L range) solutions for 5 min increases the PPO activity”
t0“APPLE POLYPHENOLOXIDASE”
Claim · model-written summary
NaCl dips increased apple PPO activity.
- Taxon
- appleMalus domesticat0
- Treatment
- NaCl (0.2-1 g/L range)e0
- Outcome
- PPO activitye0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping in ascorbic acid (0.2-10 g/L range) and in NaCl (0.2-1 g/L range) solutions for 5 min increases the PPO activity”
t0“APPLE POLYPHENOLOXIDASE”
Claim · model-written summary
Citric acid had little or no inhibition of apple PPO.
- Taxon
- appleMalus domesticat0
- Treatment
- Citric acid solutions (0.2-10 g/L range)e0
- Outcome
- inhibition of PPOe0
- Direction
- little or no inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Citric acid solutions (0.2-10 g/L range) have little or no inhibition of PPO”
t0“APPLE POLYPHENOLOXIDASE”
Claim · model-written summary
An ascorbic and citric acid mixture inhibited PPO by 90–100%.
- Taxon
- appleMalus domesticat0
- Treatment
- mixtures of ascorbic acid and citric acid (10 + 2 g/L)e0
- Outcome
- PPO inhibitione0
- Direction
- inhibitione0
- Value
- 90-100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A 90-100% PPO inhibition was obtained with a 5 min dip in mixtures of ascorbic acid and citric acid (10 + 2 g/L)”
t0“APPLE POLYPHENOLOXIDASE”
Claim · model-written summary
An ascorbic acid and sodium chloride mixture inhibited PPO by 90–100%.
- Taxon
- appleMalus domesticat0
- Treatment
- ascorbic acid and sodium chloride (10 + 0.5 g/L)e0
- Outcome
- PPO inhibitione0
- Direction
- inhibitione0
- Value
- 90-100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A 90-100% PPO inhibition was obtained with a 5 min dip in mixtures of ascorbic acid and citric acid (10 + 2 g/L), and of ascorbic acid and sodium chloride (10 + 0.5 g/L)”
t0“APPLE POLYPHENOLOXIDASE”
The same questions in other papers
citric acid · physiology: antioxidant enzymes · Malus domestica (apple)Results differ
3 papers in the same direction as this paper
- positive
- positive
- positive
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.