Abstract
In precise field trials in the Czech Republic from 2004-2008 the impact of location conditions, varieties with yellow, purple and red flesh and mineral fertilization on the content of total polyphenols (TP) and chlorogenic acid was investigated. The highest TP contents were reported at two locations with extreme climatic conditions; in those under stress due to low temperatures in the vegetation period at the mountainous area Stachy (5.89 mg TP/g DM) and those under drought stress in the warm lowland location PĹerov nad Labem with light sandy soil (5.81 mg TP/g DM). The five-year experiment with the purple-fleshed Valfi variety (13.29 mg TP/g DM) reached 2.46 to 3.18 times higher content of TP in comparison with eight yellow-fleshed varieties. The yellow-fleshed Karin variety (5.39 mg TP/g DM) outperformed TP content of other yellow-fleshed varieties by 3.1 to 29.1%. In another experiment conclusive differences between the eight varieties with purple and red flesh were found; the highest TP content was detected in cv. Violette (25.9 mg TP/g DM) with the darkest purple flesh. As to the chlorogenic acid content similar relationships between varieties were found as in the case of TP. High linear correlation (r = 0.8536) was found between the content of chlorogenic acid and the content of TP. Among the treatments of mineral N, P, K and Mg fertilization, the content of TP was only affected by a treatment with a higher dose of K and Mg, causing a decrease in TP content.
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Claims 8
Claim · model-written summary
Total polyphenols were highest at the cold mountainous Stachy site at 5.89 mg TP/g DM.
- Taxon
- potatoes
Solanum tuberosumt0 - Outcome
- TP contentse0
- Direction
- higheste0
- Value
- 5.89 mg TP/g DMe0
- Setting
- Stachye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest TP contents were reported at two locations with extreme climatic conditions; in those under stress due to low temperatures in the vegetation period at the mountainous area Stachy (5.89 mg TP/g DM)”
t0“potatoes”
Claim · model-written summary
Total polyphenols were high at drought-stressed PĹerov nad Labem at 5.81 mg TP/g DM.
- Taxon
- potatoesSolanum tuberosumt0
- Outcome
- drought stresse0
- Value
- 5.81 mg TP/g DMe0
- Setting
- PĹerov nad Labeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those under drought stress in the warm lowland location PĹerov nad Labem with light sandy soil (5.81 mg TP/g DM)”
t0“potatoes”
Claim · model-written summary
Purple-fleshed Valfi had 13.29 mg TP/g DM, 2.46 to 3.18 times the content of eight yellow-fleshed varieties.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Valfie0
- Outcome
- content of TPe0
- Direction
- highere0
- Value
- 13.29 mg TP/g DMe0
- Qualifier
- 2.46 to 3.18 timese0
- Comparator
- eight yellow-fleshed varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The five-year experiment with the purple-fleshed Valfi variety (13.29 mg TP/g DM) reached 2.46 to 3.18 times higher content of TP in comparison with eight yellow-fleshed varieties.”
t0“potatoes”
Claim · model-written summary
Yellow-fleshed Karin had 5.39 mg TP/g DM and exceeded other yellow-fleshed varieties by 3.1 to 29.1%.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Karine0
- Outcome
- TP contente0
- Direction
- outperformede0
- Value
- 5.39 mg TP/g DMe0
- Qualifier
- 3.1 to 29.1%e0
- Comparator
- other yellow-fleshed varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yellow-fleshed Karin variety (5.39 mg TP/g DM) outperformed TP content of other yellow-fleshed varieties by 3.1 to 29.1%.”
t0“potatoes”
Claim · model-written summary
Violette had the highest total polyphenols among eight purple- and red-fleshed varieties, at 25.9 mg TP/g DM.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Violettee0
- Outcome
- TP contente0
- Direction
- higheste0
- Value
- 25.9 mg TP/g DMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest TP content was detected in cv. Violette (25.9 mg TP/g DM) with the darkest purple flesh.”
t0“potatoes”
Claim · model-written summary
Chlorogenic acid content followed similar variety relationships to total polyphenols.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- varietiese0
- Outcome
- chlorogenic acid contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As to the chlorogenic acid content similar relationships between varieties were found as in the case of TP.”
t0“potatoes”
Claim · model-written summary
Chlorogenic acid and total polyphenol contents were highly linearly correlated (r = 0.8536).
- Taxon
- potatoesSolanum tuberosumt0
- Outcome
- content of chlorogenic acid and the content of TPe0
- Value
- r = 0.8536e0
- Comparator
- content of TPe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High linear correlation (r = 0.8536) was found between the content of chlorogenic acid and the content of TP.”
t0“potatoes”
Claim · model-written summary
A higher dose of K and Mg fertilization decreased total polyphenol content.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- a higher dose of K and Mge0
- Outcome
- TP contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the treatments of mineral N, P, K and Mg fertilization, the content of TP was only affected by a treatment with a higher dose of K and Mg, causing a decrease in TP content.”
t0“potatoes”
The same questions in other papers
magnesium atom · quality: phytochemicals · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- no effect
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.