Abstract
Hydroponic technologies have increased the cultivated area under greenhouses covered with UV filter polyethylene film. However, there is a concern about the antioxidant contents of lettuces produced under these systems. In this study, it was compared to the antioxidant contents of green and red leaf lettuces produced in two hydroponic systems in a greenhouse, against the ones produced with the conventional cultivation system by Colombian farmers. The antioxidant analysis revealed significant statistical differences for DPPH and Anthocyanin analyses (P=0) versus all other culture systems. The best results were obtained in the conventional cultivation. Red lettuce obtained the highest value of FRAP (655.3±82.6 mgAAE 100g-1), ABTS (17.8±6.9 mmolTE 100g-1), total phenols (680.2±69.3 mgGAE 100g-1) and anthocyanin (126.2±6.9 mgC3G 100g-1). Green lettuce exhibited the most antioxidant activity of DPPH (20.7±5.6 mmolTE 100g-1). These results suggest a detrimental effect of the greenhouse covered with UV filter polyethylene film in the antioxidant production of lettuce. Finally, red leaf lettuce showed better antioxidant capacity independent of the cultivation system.
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Claims 9
Claim · model-written summary
Lettuce grown in conventional cultivation gave the best antioxidant results compared with hydroponic systems.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- conventional cultivatione1
- Outcome
- antioxidant contentse0
- Direction
- beste1
- Comparator
- hydroponic systemse0
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green and red leaf lettuce”
e0“In this study, it was compared to the antioxidant contents of green and red leaf lettuces produced in two hydroponic systems in a greenhouse, against the ones produced with the conventional cultivation system by Colombian farmers”
e1“The best results were obtained in the conventional cultivation”
Claim · model-written summary
Red lettuce had the highest FRAP value (655.3±82.6 mgAAE 100g-1).
- Taxon
- lettuceLactuca sativat0
- Material
- Red lettucee3
- Outcome
- FRAPe3
- Direction
- higheste3
- Value
- 655.3±82.6 mgAAE 100g-1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green and red leaf lettuce”
e3“Red lettuce obtained the highest value of FRAP (655.3±82.6 mgAAE 100g-1), ABTS (17.8±6.9 mmolTE 100g-1), total phenols (680.2±69.3 mgGAE 100g-1) and anthocyanin (126.2±6.9 mgC3G 100g-1)”
Claim · model-written summary
Red lettuce had the highest ABTS value (17.8±6.9 mmolTE 100g-1).
- Taxon
- lettuceLactuca sativat0
- Material
- Red lettucee3
- Outcome
- ABTSe3
- Direction
- higheste3
- Value
- 17.8±6.9 mmolTE 100g-1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green and red leaf lettuce”
e3“Red lettuce obtained the highest value of FRAP (655.3±82.6 mgAAE 100g-1), ABTS (17.8±6.9 mmolTE 100g-1), total phenols (680.2±69.3 mgGAE 100g-1) and anthocyanin (126.2±6.9 mgC3G 100g-1)”
Claim · model-written summary
Red lettuce had the highest total phenols (680.2±69.3 mgGAE 100g-1).
- Taxon
- lettuceLactuca sativat0
- Material
- Red lettucee3
- Outcome
- total phenolse3
- Direction
- higheste3
- Value
- 680.2±69.3 mgGAE 100g-1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green and red leaf lettuce”
e3“Red lettuce obtained the highest value of FRAP (655.3±82.6 mgAAE 100g-1), ABTS (17.8±6.9 mmolTE 100g-1), total phenols (680.2±69.3 mgGAE 100g-1) and anthocyanin (126.2±6.9 mgC3G 100g-1)”
Claim · model-written summary
Red lettuce had the highest anthocyanin content (126.2±6.9 mgC3G 100g-1).
- Taxon
- lettuceLactuca sativat0
- Material
- Red lettucee3
- Outcome
- anthocyanine3
- Direction
- higheste3
- Value
- 126.2±6.9 mgC3G 100g-1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green and red leaf lettuce”
e3“Red lettuce obtained the highest value of FRAP (655.3±82.6 mgAAE 100g-1), ABTS (17.8±6.9 mmolTE 100g-1), total phenols (680.2±69.3 mgGAE 100g-1) and anthocyanin (126.2±6.9 mgC3G 100g-1)”
Claim · model-written summary
Green lettuce had the most DPPH antioxidant activity (20.7±5.6 mmolTE 100g-1).
- Taxon
- lettuceLactuca sativat0
- Material
- Green lettucee4
- Outcome
- antioxidant activity of DPPHe4
- Direction
- moste4
- Value
- 20.7±5.6 mmolTE 100g-1e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green and red leaf lettuce”
e4“Green lettuce exhibited the most antioxidant activity of DPPH (20.7±5.6 mmolTE 100g-1)”
Claim · model-written summary
DPPH and anthocyanin analyses differed significantly between lettuce grown in the conventional and hydroponic culture systems.
- Taxon
- lettuceLactuca sativat0
- Outcome
- DPPH and Anthocyanin analysese2
- Comparator
- all other culture systemse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green and red leaf lettuce”
e2“The antioxidant analysis revealed significant statistical differences for DPPH and Anthocyanin analyses (P=0) versus all other culture systems”
Claim · model-written summary
Greenhouse cover with UV filter polyethylene film appears to have a detrimental effect on lettuce antioxidant production compared with conventional cultivation.
- Taxon
- lettuceLactuca sativat0
- Treatment
- greenhouse covered with UV filter polyethylene filme5
- Outcome
- antioxidant productione5
- Qualifier
- detrimental effecte5
- Comparator
- conventional cultivation systeme0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green and red leaf lettuce”
e0“In this study, it was compared to the antioxidant contents of green and red leaf lettuces produced in two hydroponic systems in a greenhouse, against the ones produced with the conventional cultivation system by Colombian farmers”
e5“These results suggest a detrimental effect of the greenhouse covered with UV filter polyethylene film in the antioxidant production of lettuce”
Claim · model-written summary
Red leaf lettuce showed better antioxidant capacity independent of the cultivation system.
Verbatim
e6“Finally, red leaf lettuce showed better antioxidant capacity independent of the cultivation system”
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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.