Abstract
Abstract BACKGROUND: Broccoli (Brassicaceae) is a rich source of phytochemicals (glucosinolates and phenolic compounds) and micronutrients (vitamins and minerals). Germinated broccoli sprouts contain much higher levels (10–100 times) of aliphatic (glucoraphanin) and indolic glucosinolates than the inflorescences. This quality characteristic of broccoli sprouts plays an important role in human health and disease prevention. Although it is known that genetic and environmental factors can affect the composition of broccoli inflorescences, the influence of such factors on the seeds and sprouts has not been widely reported. Therefore the aim of this study was to determine the effect of light versus dark growth conditions on the phytochemical composition (vitamin C, phenolic compounds and glucosinolates) of broccoli sprouts. RESULTS: Broccoli sprouts grown in the light were found to have much higher concentrations of vitamin C (by 83%), glucosinolates (by 33%) and phenolic compounds (by 61%) than those grown in the dark. During a 7 day period there was a clear and analogous trend in both treatments, with a general reduction in concentrations over time. Among the different organs studied (seeds, cotyledons, stems and roots), the cotyledons contained the highest levels of bioactive compounds, while the roots contained the lowest. CONCLUSION: Light treatment of sprouting broccoli seeds increased their concentration of health‐promoting phytochemicals, mainly during the first 3–5 days of development. Therefore the younger broccoli sprouts are a better source of bioactive compounds for the consumer than the inflorescences. Copyright © 2008 Society of Chemical Industry
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Claims 8
Claim · model-written summary
Light-grown broccoli sprouts had 83% more vitamin C than dark-grown sprouts.
- Taxon
- Broccoli
Brassica oleracea var. italicae0 - Treatment
- lighte0
- Outcome
- concentrations of vitamin Ce0
- Direction
- much highere0
- Value
- 83%e0
- Comparator
- darke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broccoli sprouts grown in the light were found to have much higher concentrations of vitamin C (by 83%), glucosinolates (by 33%) and phenolic compounds (by 61%) than those grown in the dark”
Claim · model-written summary
Light-grown broccoli sprouts had 33% more glucosinolates than dark-grown sprouts.
- Taxon
- BroccoliBrassica oleracea var. italicae0
- Treatment
- lighte0
- Outcome
- glucosinolatese0
- Direction
- much highere0
- Value
- 33%e0
- Comparator
- darke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broccoli sprouts grown in the light were found to have much higher concentrations of vitamin C (by 83%), glucosinolates (by 33%) and phenolic compounds (by 61%) than those grown in the dark”
Claim · model-written summary
Light-grown broccoli sprouts had 61% more phenolic compounds than dark-grown sprouts.
- Taxon
- BroccoliBrassica oleracea var. italicae0
- Treatment
- lighte0
- Outcome
- phenolic compoundse0
- Direction
- much highere0
- Value
- 61%e0
- Comparator
- darke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broccoli sprouts grown in the light were found to have much higher concentrations of vitamin C (by 83%), glucosinolates (by 33%) and phenolic compounds (by 61%) than those grown in the dark”
Claim · model-written summary
Phytochemical concentrations generally declined over seven days in both conditions.
- Taxon
- BroccoliBrassica oleracea var. italicae1
- Outcome
- concentrationse0
- Direction
- general reductione0
- Qualifier
- 7 day periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During a 7 day period there was a clear and analogous trend in both treatments, with a general reduction in concentrations over time”
e1“Broccoli sprouts grown in the light”
Claim · model-written summary
Cotyledons had the highest and roots the lowest levels of bioactive compounds.
- Taxon
- BroccoliBrassica oleracea var. italicae1
- Organ / stage
- cotyledonse0
- Outcome
- levels of bioactive compoundse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cotyledons contained the highest levels of bioactive compounds, while the roots contained the lowest”
e1“Broccoli sprouts grown in the light”
Claim · model-written summary
Roots had the lowest levels of bioactive compounds.
- Taxon
- BroccoliBrassica oleracea var. italicae1
- Organ / stage
- rootse0
- Outcome
- levels of bioactive compoundse0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cotyledons contained the highest levels of bioactive compounds, while the roots contained the lowest”
e1“Broccoli sprouts grown in the light”
Claim · model-written summary
Light increased phytochemical concentrations mainly in the first three to five days.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- Light treatmente0
- Outcome
- concentration of health‐promoting phytochemicalse0
- Direction
- increasede0
- Qualifier
- first 3–5 days of developmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light treatment of sprouting broccoli seeds increased their concentration of health‐promoting phytochemicals, mainly during the first 3–5 days of development”
Claim · model-written summary
The authors judge younger sprouts a better bioactive-compound source than inflorescences.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Outcome
- better source of bioactive compoundse0
- Comparator
- inflorescencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the younger broccoli sprouts are a better source of bioactive compounds for the consumer than the inflorescences”
The same questions in other papers
light · quality: phytochemicals · Brassica oleracea (wild cabbage)Positive and negative results
30 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- positive
- positive
30 papers more in this group
See all 34 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.