Abstract
We investigated the utilization of UV-stress as a method to increase the contents of β-carotene, tocopherols, and ascorbic acid in green vegetables. UV irradiation with fluorescent lamps (max. UV wave length: 310 nm) for 5 min increased α-tocopherol and reduced ascorbic acid in spinach cultivated in a plastic film house. Similar effects from UV irradiation were also expected in the shorter treatment beginnig about 20 days before harvest. Judging from the results obtained in the simulation examination with laminas, it appeared that the effect demands successive daily treatments until harvest time and results from the induction of the plant antioxidative system in an adaptation response to UV-stress. Our results indicate that UV irradiation could be an effective technique to improve the quality of green vegetables.
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Claims 4
Claim · model-written summary
Five minutes of UV irradiation increased α-tocopherol in spinach.
- Taxon
- spinach
Spinacia oleraceae0 - Treatment
- UV irradiation with fluorescent lamps (max. UV wave length: 310 nm) for 5 mine0
- Outcome
- α-tocopherole0
- Direction
- increasede0
- Setting
- plastic film housee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV irradiation with fluorescent lamps (max. UV wave length: 310 nm) for 5 min increased α-tocopherol and reduced ascorbic acid in spinach cultivated in a plastic film house”
Claim · model-written summary
Five minutes of UV irradiation reduced ascorbic acid in spinach.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- UV irradiation with fluorescent lamps (max. UV wave length: 310 nm) for 5 mine0
- Outcome
- ascorbic acide0
- Direction
- reducede0
- Setting
- plastic film housee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV irradiation with fluorescent lamps (max. UV wave length: 310 nm) for 5 min increased α-tocopherol and reduced ascorbic acid in spinach cultivated in a plastic film house”
Claim · model-written summary
The authors inferred that successive daily UV treatments until harvest are needed for the antioxidant response.
- Treatment
- successive daily treatments until harvest timee0
- Outcome
- plant antioxidative systeme0
- Qualifier
- induction of the plant antioxidative systeme0
Not reportedTaxon
Verbatim
e0“it appeared that the effect demands successive daily treatments until harvest time and results from the induction of the plant antioxidative system in an adaptation response to UV-stress”
Claim · model-written summary
The authors suggest UV irradiation could improve green vegetable quality.
Verbatim
e0“UV irradiation could be an effective technique to improve the quality of green vegetables”
The same questions in other papers
uv · quality: phytochemicals · Spinacia oleracea (spinach)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
uv · molecular: metabolites · Spinacia oleracea (spinach)Positive and negative results
3 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- no effect
4 papers more in this group
See all 8 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.