Abstract
Abstract BACKGROUND: Coincident with the changes in agricultural practices from conventional to organic, changes in the nutrient composition of fresh fruits and vegetables have been identified. The levels of peroxidase, total phenolics content, and capsidiol activity in organic as compared with conventional sweet pepper fruit were examined in this study. In order to avoid interferences of environmental factors on the studied parameters, the sweet peppers were grown (organically and conventionally) in a greenhouse under the same soil and climate conditions. RESULTS: Peroxidase was partially purified using the Triton X‐114 method and both organic and conventional peppers had the same isoenzymatic form. However, peroxidase activity in organic sweet peppers was higher than in conventional ones, in both maturity stages studied. The level of total phenolics compunds was also higher in organic than in conventional sweet peppers. With respect to the capsidiol activity, expressed as inhibition of fungus growth, it was not affected by the cultivation method at the green mature stage. However, at the red mature stage, organic sweet peppers showed higher capsidiol activity than those grown under the conventional system. CONCLUSION: Sweet peppers grown under organic culture have a maturity‐related response, with high levels of phenolic compounds, and peroxidase and capsidiol activity that contribute to disease resistance in organic farming. Copyright © 2007 Society of Chemical Industry
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Claims 5
Claim · model-written summary
Organic and conventional peppers had the same peroxidase isoenzymatic form.
- Taxon
- sweet peppers
Capsicum annuumt0 - Treatment
- organice0
- Gene
- Peroxidasee1
- Outcome
- isoenzymatic forme0
- Direction
- samee0
- Comparator
- conventional pepperse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both organic and conventional peppers had the same isoenzymatic form”
e1“Peroxidase was partially purified using the Triton X‐114 method”
t0“sweet peppers”
Claim · model-written summary
Peroxidase activity was higher in organic peppers at both maturity stages.
- Taxon
- sweet peppersCapsicum annuume0
- Treatment
- organice0
- Outcome
- peroxidase activitye0
- Direction
- highere0
- Qualifier
- both maturity stages studiede0
- Comparator
- conventional onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“peroxidase activity in organic sweet peppers was higher than in conventional ones, in both maturity stages studied”
Claim · model-written summary
Total phenolics were higher in organic peppers than conventional peppers.
- Taxon
- sweet peppersCapsicum annuume0
- Treatment
- organice0
- Outcome
- level of total phenolics compundse0
- Direction
- highere0
- Comparator
- conventional sweet pepperse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The level of total phenolics compunds was also higher in organic than in conventional sweet peppers”
Claim · model-written summary
At green maturity, cultivation method did not affect capsidiol activity measured as fungal growth inhibition.
- Taxon
- sweet peppersCapsicum annuumt0
- Organ / stage
- green mature stagee0
- Treatment
- cultivation methode0
- Outcome
- capsidiol activitye0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“capsidiol activity, expressed as inhibition of fungus growth, it was not affected by the cultivation method at the green mature stage”
t0“sweet peppers”
Claim · model-written summary
At red maturity, organic peppers had higher capsidiol activity than conventionally grown peppers.
- Taxon
- sweet peppersCapsicum annuume0
- Organ / stage
- red mature stagee0
- Treatment
- organice0
- Outcome
- capsidiol activitye0
- Direction
- highere0
- Comparator
- conventional systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the red mature stage, organic sweet peppers showed higher capsidiol activity than those grown under the conventional system”
The same questions in other papers
cultivation system · molecular: metabolites · Capsicum annuum (sweet pepper)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- positive
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See all 6 papers →cultivation system · quality: phytochemicals · Capsicum annuum (sweet pepper)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.