Abstract
Carrots (Daucus carota L) of the cultivar ‘Nanthya’ F1 were grown in Mitscherlich pots containing quartz sand with inorganic nitrogen fertilisation (five levels, four replications) and time-controlled drip irrigation. The effect of different nitrogen uptake on the yield and on the amount and composition of essential oils, sugars and organic acids was investigated. Sucrose, glucose and fructose were extracted and analysed by HPLC; L-malic acid and citric acid were measured with an enzymatic test. Medium- and higher-boiling flavour components were isolated as essential oils by simultaneous watersteam distillation and pentane extraction (SDE) and separated gas chromatographically (HRGC–FID). Thirteen essential oil components were identified by mass spectrometry as well as by comparison of retention times and quantified by external standards. The higher the supply of nitrogen, the higher was its uptake and as a consequence the higher were the nitrogen and nitrate contents of the leaves as well as the roots of the carrots. Carrots with lower nitrogen application had higher amounts of sucrose and essential oils but lower amounts of glucose and fructose. Fertilisation with nitrogen affected not only the total content but also the composition of the essential oils. A correlation between nitrogen nutrition and organic acids could not be found. © 2000 Society of Chemical Industry
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Claims 11
Claim · model-written summary
Thirteen carrot essential oil components were identified and quantified.
- Taxon
- Carrots
Daucus carotat0 - Outcome
- essential oil componentse0
- Value
- Thirteene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thirteen essential oil components were identified by mass spectrometry as well as by comparison of retention times and quantified by external standards.”
t0“carrots”
Claim · model-written summary
Higher nitrogen supply increased carrot uptake.
- Taxon
- carrotsDaucus carotae0
- Treatment
- supply of nitrogene0
- Outcome
- uptakee0
- Direction
- highere0
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher the supply of nitrogen, the higher was its uptake and as a consequence the higher were the nitrogen and nitrate contents of the leaves as well as the roots of the carrots.”
Claim · model-written summary
Higher nitrogen supply increased carrot nitrogen.
- Taxon
- carrotsDaucus carotae0
- Organ / stage
- leaves as well as the rootse0
- Treatment
- supply of nitrogene0
- Outcome
- nitrogene0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher the supply of nitrogen, the higher was its uptake and as a consequence the higher were the nitrogen and nitrate contents of the leaves as well as the roots of the carrots.”
Claim · model-written summary
Higher nitrogen supply increased carrot nitrate.
- Taxon
- carrotsDaucus carotae0
- Organ / stage
- leaves as well as the rootse0
- Treatment
- supply of nitrogene0
- Outcome
- nitratee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher the supply of nitrogen, the higher was its uptake and as a consequence the higher were the nitrogen and nitrate contents of the leaves as well as the roots of the carrots.”
Claim · model-written summary
Lower nitrogen application yielded higher carrot sucrose.
- Taxon
- CarrotsDaucus carotae0
- Treatment
- lower nitrogen applicatione0
- Outcome
- sucrosee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carrots with lower nitrogen application had higher amounts of sucrose and essential oils but lower amounts of glucose and fructose.”
Claim · model-written summary
Lower nitrogen application yielded higher carrot essential oils.
- Taxon
- CarrotsDaucus carotae0
- Treatment
- lower nitrogen applicatione0
- Outcome
- essential oilse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carrots with lower nitrogen application had higher amounts of sucrose and essential oils but lower amounts of glucose and fructose.”
Claim · model-written summary
Lower nitrogen application yielded lower carrot glucose.
- Taxon
- CarrotsDaucus carotae0
- Treatment
- lower nitrogen applicatione0
- Outcome
- glucosee0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carrots with lower nitrogen application had higher amounts of sucrose and essential oils but lower amounts of glucose and fructose.”
Claim · model-written summary
Lower nitrogen application yielded lower carrot fructose.
- Taxon
- CarrotsDaucus carotae0
- Treatment
- lower nitrogen applicatione0
- Outcome
- fructosee0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carrots with lower nitrogen application had higher amounts of sucrose and essential oils but lower amounts of glucose and fructose.”
Claim · model-written summary
Nitrogen fertilisation affected total essential oil content.
- Taxon
- carrotsDaucus carotat0
- Treatment
- Fertilisation with nitrogene0
- Outcome
- total contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilisation with nitrogen affected not only the total content but also the composition of the essential oils.”
t0“carrots”
Claim · model-written summary
Nitrogen fertilisation affected essential oil composition.
- Taxon
- carrotsDaucus carotat0
- Treatment
- Fertilisation with nitrogene0
- Outcome
- composition of the essential oilse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilisation with nitrogen affected not only the total content but also the composition of the essential oils.”
t0“carrots”
Claim · model-written summary
No correlation was found between nitrogen nutrition and organic acids.
- Taxon
- carrotsDaucus carotat0
- Treatment
- nitrogen nutritione0
- Outcome
- organic acidse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A correlation between nitrogen nutrition and organic acids could not be found.”
t0“carrots”
The same questions in other papers
nitrogen · molecular: metabolites · Daucus carota (carrot)Positive and negative results
3 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- negative
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.