Abstract
Broccoli consumption is rising worldwide and fertilization is a tool to increase its production. However, little is known about the effect of mineral supplementation to the soil on the bioactive compounds. Therefore, the aim of this investigation was to analyze the content of vitamin C, total phenolic compounds and the antioxidant capacity of broccoli florets cultivated under different nitrogen (N) conditions in combination with selenium (IV and VI). Greenhouse experiments were conducted in broccoli grown in commercial soil treated with different N sources [(NH4)2SO4, NaNO3, NH4NO3 or CO(NH2)2 at 160 kg N/ha]. In addition, selenium (Se) salts [Na2SeO3 (Se IV) or Na2SeO4 (Se VI) at 10 and 20 kg Se/ha] were applied. There were no evidences of the influence of N treatment on vitamin C content whilst Se (IV or VI) uptake led to a significant reduction of this vitamin in broccoli florets, irrespective of the N source. In contrast, total phenolics content and antioxidant capacity underwent a significant increment under N application. However, their combination with Se salts modified total phenolic content and antioxidant capacities in broccoli florets depending on N source and Se doses. Among all the experimental trials, application of NH4NO3 combined with 10 g Se (IV)/ha was the elective treatment strategy to produce broccoli florets with higher content of phenolic compounds and antioxidant capacity and, therefore, enhanced functionality.
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Claims 5
Claim · model-written summary
Nitrogen treatment showed no evidence of an effect on broccoli vitamin C.
- Taxon
- broccoli
Brassica oleracea var. italicat0 - Treatment
- N treatmente0
- Outcome
- vitamin C contente0
- Direction
- no evidences of the influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no evidences of the influence of N treatment on vitamin C content”
t0“Broccoli”
Claim · model-written summary
Selenium uptake significantly reduced vitamin C in broccoli florets.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- Se (IV or VI) uptakee0
- Outcome
- this vitamin in broccoli floretse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Se (IV or VI) uptake led to a significant reduction of this vitamin in broccoli florets, irrespective of the N source.”
Claim · model-written summary
Nitrogen application significantly increased total phenolics and antioxidant capacity.
- Taxon
- broccoliBrassica oleracea var. italicat0
- Treatment
- N applicatione0
- Outcome
- total phenolics content and antioxidant capacitye0
- Direction
- incremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total phenolics content and antioxidant capacity underwent a significant increment under N application.”
t0“Broccoli”
Claim · model-written summary
Nitrogen combined with selenium modified phenolic content and antioxidant capacity depending on source and dose.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- combination with Se saltse0
- Outcome
- total phenolic content and antioxidant capacitiese0
- Qualifier
- depending on N source and Se dosese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“their combination with Se salts modified total phenolic content and antioxidant capacities in broccoli florets depending on N source and Se doses.”
Claim · model-written summary
The authors identified NH4NO3 with selenium IV as the preferred strategy for higher phenolics and antioxidant capacity.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- NH4NO3 combined with 10 g Se (IV)/hae0
- Outcome
- elective treatment strategye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of NH4NO3 combined with 10 g Se (IV)/ha was the elective treatment strategy to produce broccoli florets with higher content of phenolic compounds and antioxidant capacity”
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See all 24 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.