Abstract
Understanding how the environment and production and cultivation practices influence the composition and quality of food crops is fundamental to the production of high-quality nutritious foods. In this 3-year study, total phenolics, percent soluble solids, ascorbic acid, and the flavonoid aglycones quercetin, kaempferol, and luteolin were measured in two varieties of tomato (Lycopersicon esculentum L. cv. Ropreco and Burbank) and two varieties of bell peppers (Capsicum annuum L. cv. California Wonder and Excalibur) grown by certified organic and conventional practices in a model system. Significantly higher levels of percent soluble solids (17%), quercetin (30%), kaempferol (17%), and ascorbic acid (26%) were found in Burbank tomatoes (fresh weight basis; FWB), whereas only levels of percent soluble solids (10%) and kaempferol (20%) were significantly higher in organic Ropreco tomatoes (FWB). Year-to-year variability was significant, and high values from 2003 influenced the 3-year average value of quercetin reported for organic Burbank tomatoes. Burbank tomatoes generally had higher levels of quercetin, kaempferol, total phenolics, and ascorbic acid as compared to Ropreco tomatoes. Bell peppers were influenced less by environment and did not display cropping system differences.
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Claims 10
Claim · model-written summary
Organic Burbank tomatoes had 17% higher soluble solids.
- Taxon
- tomatoes
Solanum lycopersicumt0 - Material
- Burbanke1
- Treatment
- organict0
- Outcome
- percent soluble solidse0
- Direction
- highere0
- Value
- 17%e0
- Comparator
- conventionalt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significantly higher levels of percent soluble solids (17%)”
t0“Organic and Conventionally Managed Tomatoes”
e1“Burbank tomatoes (fresh weight basis; FWB)”
Claim · model-written summary
Organic Burbank tomatoes had 30% higher quercetin.
- Taxon
- tomatoesSolanum lycopersicumt0
- Material
- Burbanke1
- Treatment
- organict0
- Outcome
- quercetine0
- Direction
- highere2
- Value
- 30%e0
- Comparator
- conventionalt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“quercetin (30%)”
t0“Organic and Conventionally Managed Tomatoes”
e1“Burbank tomatoes (fresh weight basis; FWB)”
e2“Significantly higher levels”
Claim · model-written summary
Organic Burbank tomatoes had 17% higher kaempferol.
- Taxon
- tomatoesSolanum lycopersicumt0
- Material
- Burbanke1
- Treatment
- organict0
- Outcome
- kaempferole0
- Direction
- highere2
- Value
- 17%e0
- Comparator
- conventionalt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“kaempferol (17%)”
t0“Organic and Conventionally Managed Tomatoes”
e1“Burbank tomatoes (fresh weight basis; FWB)”
e2“Significantly higher levels”
Claim · model-written summary
Organic Burbank tomatoes had 26% higher ascorbic acid.
- Taxon
- tomatoesSolanum lycopersicumt0
- Material
- Burbanke1
- Treatment
- organict0
- Outcome
- ascorbic acide0
- Direction
- highere2
- Value
- 26%e0
- Comparator
- conventionalt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ascorbic acid (26%)”
t0“Organic and Conventionally Managed Tomatoes”
e1“Burbank tomatoes (fresh weight basis; FWB)”
e2“Significantly higher levels”
Claim · model-written summary
Organic Ropreco tomatoes had 10% higher soluble solids.
- Taxon
- tomatoesSolanum lycopersicumt0
- Material
- Roprecoe1
- Treatment
- organice1
- Outcome
- percent soluble solidse0
- Direction
- highere1
- Value
- 10%e0
- Comparator
- conventionalt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percent soluble solids (10%)”
t0“Organic and Conventionally Managed Tomatoes”
e1“significantly higher in organic Ropreco tomatoes”
Claim · model-written summary
Organic Ropreco tomatoes had 20% higher kaempferol.
- Taxon
- tomatoesSolanum lycopersicumt0
- Material
- Roprecoe1
- Treatment
- organice1
- Outcome
- kaempferole0
- Direction
- highere1
- Value
- 20%e0
- Comparator
- conventionalt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“kaempferol (20%)”
t0“Organic and Conventionally Managed Tomatoes”
e1“significantly higher in organic Ropreco tomatoes”
Claim · model-written summary
Year to year variability in composition was significant.
- Taxon
- tomatoesSolanum lycopersicumt0
- Outcome
- Year-to-year variabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Year-to-year variability was significant”
t0“Tomatoes”
Claim · model-written summary
High 2003 values influenced the three year average quercetin value for organic Burbank tomatoes.
- Taxon
- tomatoesSolanum lycopersicumt0
- Material
- Burbanke0
- Outcome
- 3-year average value of quercetine0
- Setting
- 2003e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high values from 2003 influenced the 3-year average value of quercetin reported for organic Burbank tomatoes”
t0“Tomatoes”
Claim · model-written summary
Burbank generally had higher quercetin, kaempferol, total phenolics and ascorbic acid than Ropreco.
- Taxon
- tomatoesSolanum lycopersicume0
- Material
- Burbanke0
- Outcome
- quercetin, kaempferol, total phenolics, and ascorbic acide0
- Direction
- highere0
- Comparator
- Roprecoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Burbank tomatoes generally had higher levels of quercetin, kaempferol, total phenolics, and ascorbic acid as compared to Ropreco tomatoes”
Claim · model-written summary
Bell peppers showed no cropping system differences.
Verbatim
e0“Bell peppers were influenced less by environment and did not display cropping system differences”
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