Abstract
Microgreens are vegetable greens that are harvested early while they are still immature and have just developed cotyledons. One of the disadvantages and a challenge in production is that they exhibit a short shelf life and may be damaged easily. In seeking to prolong the shelf life, some pre- and postharvest interventions have been investigated. Here, kale and mustard microgreens were grown in a controlled-environment walk-in chamber at +21/17 °C, with ~65% relative air humidity, while maintaining the spectral composition of deep red 61%, blue 20%, white 15%, and far red 4% (150, 200, and 250 µmol m−2 s−1 photosynthetic photon flux density (PPFD)). Both microgreens seemed to exhibit specific and species-dependent responses. Higher PPFD during growth and storage in light conditions resulted in increased contents of TPC in both microgreens on D5. Additionally, 150 and 250 PPFD irradiation affected the α-tocopherol content by increasing it during postharvest storage in kale. On D0 150 for kale and 200 PPFD for mustard microgreens, β-carotene content increased. D5 for kale showed insignificant differences, while mustard responded with the highest β-carotene content, under 150 PPFD. Our findings suggest that both microgreens show beneficial outcomes when stored in light compared to dark and that mild photostress is a promising tool for nutritional value improvement and shelf-life prolongation.
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Claims 9
Claim · model-written summary
Higher cultivation PPFD and light storage increased TPC in kale microgreens on day five.
- Taxon
- kale
Brassica oleracea var. viridise1 - Treatment
- Higher PPFD during growth and storage in light conditionse0
- Outcome
- contents of TPCe0
- Direction
- increasede0
- Qualifier
- D5e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher PPFD during growth and storage in light conditions resulted in increased contents of TPC in both microgreens on D5.”
e1“Here, kale and mustard microgreens were grown”
Claim · model-written summary
Higher cultivation PPFD and light storage increased TPC in mustard microgreens on day five.
- Taxon
- mustarde1
- Treatment
- Higher PPFD during growth and storage in light conditionse0
- Outcome
- contents of TPCe0
- Direction
- increasede0
- Qualifier
- D5e0
Not reportedComparator
Verbatim
e0“Higher PPFD during growth and storage in light conditions resulted in increased contents of TPC in both microgreens on D5.”
e1“Here, kale and mustard microgreens were grown”
Claim · model-written summary
150 PPFD irradiation increased α-tocopherol during kale postharvest storage.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- 150e0
- Outcome
- α-tocopherol contente0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“150 and 250 PPFD irradiation affected the α-tocopherol content by increasing it during postharvest storage in kale.”
Claim · model-written summary
250 PPFD irradiation increased α-tocopherol during kale postharvest storage.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- 250 PPFD irradiatione0
- Outcome
- α-tocopherol contente0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“150 and 250 PPFD irradiation affected the α-tocopherol content by increasing it during postharvest storage in kale.”
Claim · model-written summary
At day zero, 150 PPFD increased β-carotene in kale.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- 150e0
- Outcome
- β-carotene contente0
- Direction
- increasede0
- Qualifier
- D0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On D0 150 for kale and 200 PPFD for mustard microgreens, β-carotene content increased.”
Claim · model-written summary
At day zero, 200 PPFD increased β-carotene in mustard microgreens.
Not reportedComparator
Verbatim
e0“On D0 150 for kale and 200 PPFD for mustard microgreens, β-carotene content increased.”
Claim · model-written summary
At day five, kale β-carotene differences were insignificant.
- Taxon
- kaleBrassica oleracea var. viridise0
- Outcome
- β-carotene contente1
- Qualifier
- D5e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“D5 for kale showed insignificant differences”
e1“β-carotene content increased”
Claim · model-written summary
At day five, mustard β-carotene was highest under 150 PPFD.
Not reportedComparator
Verbatim
e0“mustard responded with the highest β-carotene content, under 150 PPFD.”
Claim · model-written summary
Authors recommend mild photostress to improve nutritional value and extend shelf life.
- Taxon
- microgreense1
- Treatment
- mild photostresse0
- Outcome
- nutritional value improvement and shelf-life prolongatione0
Not reportedDirection
Verbatim
e0“mild photostress is a promising tool for nutritional value improvement and shelf-life prolongation”
e1“both microgreens show beneficial outcomes”
The same questions in other papers
radiation · molecular: metabolites · Brassica oleracea (wild cabbage)Positive and negative results
3 papers in the same direction as this paper · 4 in the opposite direction
- negative
- 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.