Abstract
Bell pepper (Capsicum annuum) is one of the most popular vegetables consumed worldwide. The leaves of pepper are rich in phenolics, including phenolic acids and flavonoids. These compounds are well known for their ultraviolet (UV) absorbing and antioxidant properties. While the change of the phenolic pattern is an intensive research subject, it is not yet well-known in pepper leaves, particularly in outdoor conditions. In this experiment, we examined the effect of UV radiation on the leaves of outdoor grown peppers, focusing on the UV-absorbing properties and antioxidant capacities. Three different total antioxidant capacity (TAC) measurements have been compared: (I) Folin-Ciocalteu Reactivity (FC), (II) Ferric Reducing Antioxidant Power (FRAP) and (III) Trolox Equivalent Antioxidant Capacity (TEAC). Moreover, non-enzymatic hydrogen peroxide scavenging antioxidant capacity was measured. Significant increase was detected only in FRAP, suggesting an elevation exclusively in the level of phenolic acids in case of UV exposed outdoor grown pepper leaves.
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Claims 2
Claim · model-written summary
UV exposure significantly increased FRAP antioxidant capacity in outdoor-grown pepper leaves, and no other capacity measure showed a significant increase.
- Taxon
- Capsicum annuum
Capsicum annuume0 - Organ / stage
- leavese1
- Treatment
- UV radiatione1
- Outcome
- FRAPe2
- Direction
- increasee2
- Setting
- outdoore2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bell pepper (Capsicum annuum) is one of the most popular vegetables consumed worldwide”
e1“we examined the effect of UV radiation on the leaves of outdoor grown peppers”
e2“Significant increase was detected only in FRAP, suggesting an elevation exclusively in the level of phenolic acids in case of UV exposed outdoor grown pepper leaves”
Claim · model-written summary
The increase in antioxidant capacity under UV is suggested to reflect a higher level of phenolic acids in pepper leaves.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- UV exposede2
- Outcome
- level of phenolic acidse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bell pepper (Capsicum annuum) is one of the most popular vegetables consumed worldwide”
e2“Significant increase was detected only in FRAP, suggesting an elevation exclusively in the level of phenolic acids in case of UV exposed outdoor grown pepper leaves”
The same questions in other papers
uv · molecular: metabolites · Capsicum annuum (sweet pepper)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
radiation · molecular: metabolites · Capsicum annuum (sweet pepper)Results agree
1 paper in the same direction as this paper
- positive
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.