Abstract
The objective of this study is to investigate the eff ects of irradiation from light-emitt ing diodes (LEDs) on several fruits during storage. To improve storage and increase the contents of some bioactive compounds, apple, tomato and red bell pepper fruits were exposed to yellow light emitt ed from the diodes at 590 nm. The contents of ascorbic acid, total phenolics, total fl avonoids and several pigments were investigated, along with the antioxidant potential. The colour parameters (L*, a* and b*) and fi rmness of the fruit were also determined. Aft er 7 days of LED light irradiation, there was signifi cantly higher total phenolic content and antioxidant potential in apple peel extracts. The irradiated fruit of tomato had signifi cantly higher levels of total phenolic compounds, and the fruit of red bell pepper had signifi cantly higher antioxidant potential. LED light had no eff ects on the colour parameters, although there was a tendency to accelerate colour development. Apple fruit irradiated with LED light was signifi cantly less fi rm. Among twelve analysed pigments, signifi cantly more -carotene was detected in LED light-irradiated apple and bell pepper fruit, more -tocopherol and -tocopherol in bell pepper fruit, and more lutein in apple peel and bell pepper fruit. The applied LED light slightly accelerated the ripening of the studied fruit, and aff ected the synthesis of some of the secondary metabolites.
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Claims 9
Claim · model-written summary
After 7 days of LED irradiation, apple peel extracts had significantly higher total phenolic content and antioxidant potential.
- Taxon
- apple
Malus domesticae1 - Organ / stage
- apple peele1
- Treatment
- LED light irradiatione1
- Outcome
- total phenolic content and antioxidant potentiale1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Aft er 7 days of LED light irradiation, there was signifi cantly higher total phenolic content and antioxidant potential in apple peel extracts”
Claim · model-written summary
Irradiated tomato fruit had significantly higher total phenolic compounds.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- irradiatede1
- Outcome
- total phenolic compoundse1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The irradiated fruit of tomato had signifi cantly higher levels of total phenolic compounds”
Claim · model-written summary
Red bell pepper fruit had significantly higher antioxidant potential after irradiation.
Not reportedTreatmentComparator
Verbatim
e1“the fruit of red bell pepper had signifi cantly higher antioxidant potential”
Claim · model-written summary
LED light had no effect on colour parameters.
- Taxon
- Apple, Tomato and Bell Peppert0
- Treatment
- LED lighte1
- Outcome
- colour parameterse1
- Direction
- no eff ectse1
Not reportedComparator
Verbatim
e1“LED light had no eff ects on the colour parameters”
t0“Apple, Tomato and Bell Pepper Fruit”
Claim · model-written summary
Apple fruit irradiated with LED light was significantly less firm.
- Taxon
- AppleMalus domesticae1
- Treatment
- irradiated with LED lighte1
- Outcome
- fi rme1
- Direction
- lesse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Apple fruit irradiated with LED light was signifi cantly less fi rm”
Claim · model-written summary
More carotene was detected in LED-irradiated apple and bell pepper fruit.
Not reportedComparator
Verbatim
e1“more -carotene was detected in LED light-irradiated apple and bell pepper fruit”
Claim · model-written summary
Irradiated bell pepper fruit had more tocopherols.
Not reportedTreatmentComparator
Verbatim
e1“more -tocopherol and -tocopherol in bell pepper fruit”
Claim · model-written summary
Irradiated apple peel and bell pepper fruit had more lutein.
- Taxon
- appleMalus domesticae1
- Organ / stage
- apple peele1
- Outcome
- luteine1
- Direction
- moree1
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“more lutein in apple peel and bell pepper fruit”
Claim · model-written summary
The applied LED light slightly accelerated ripening of the fruit.
- Taxon
- Apple, Tomato and Bell Peppert0
- Treatment
- applied LED lighte1
- Outcome
- ripeninge1
- Direction
- acceleratede1
Not reportedComparator
Verbatim
e1“The applied LED light slightly accelerated the ripening of the studied fruit”
t0“Apple, Tomato and Bell Pepper Fruit”
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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.