Effects of LED lighting recipes on postharvest quality of leafy vegetables grown in a vertical farm

C.C.S. Nicole, J. Mooren, A.T. Pereira Terra, D.H. Larsen, E.J. Woltering, L.F.M. Marcelis, J. Verdonk, R. Schouten, F. Troost

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Vertical farming is a technology that controls climate, water, nutrients and light to grow food in a closed environment. This allows vegetables to grow pesticide free and without other contaminants. We investigated how to influence the postharvest quality by controlling the preharvest growth conditions while keeping a high production rate. Several standard LED lighting recipes (red/blue or red/white either with or without far red) are in use in commercial farms. For this research we used lettuce, baby leaf spinach, rocket and basil from various cultivars all grown in a vertical farm research facility. We used the standard red white LED light recipe as control, while we changed the spectrum with higher blue and/or higher far-red or apply few days of continuous light stimulation just before the harvest (preharvest). Quality at harvest and quality loss during postharvest storage was monitored. We observed that light quality affects shelf life of baby leaf spinach and rocket by several days. The best light recipe for shelf life had a high blue content (35%) while the worst was with a high far red (25%). In addition, contents of vitamin C, K, nitrate, chlorophyll and flavonols were different under various light quality. Nitrate (in lettuce, rocket and spinach) and vitamin C in rocket were strongly affected by preharvest continuous light, offering a way to reduce the nitrate and improve the antioxidant level. In addition, taste was also found to change as a function of light quality but magnitude of this change is shown to be strongly cultivar dependent.

Original languageEnglish
Pages (from-to)481-488
Number of pages8
JournalActa Horticulturae
Volume1256
DOIs
Publication statusPublished - 2019

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green leafy vegetables
storage quality
light quality
lighting
spinach
farms
nitrates
lettuce
shelf life
ascorbic acid
postharvest losses
research facilities
basil
commercial farms
white light
cultivars
flavonols
leaves
pesticides
farming systems

Keywords

  • LED lighting
  • Nitrate
  • Shelf life
  • Taste
  • Vertical farming
  • Vitamin C
  • Vitamin K

Cite this

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title = "Effects of LED lighting recipes on postharvest quality of leafy vegetables grown in a vertical farm",
abstract = "Vertical farming is a technology that controls climate, water, nutrients and light to grow food in a closed environment. This allows vegetables to grow pesticide free and without other contaminants. We investigated how to influence the postharvest quality by controlling the preharvest growth conditions while keeping a high production rate. Several standard LED lighting recipes (red/blue or red/white either with or without far red) are in use in commercial farms. For this research we used lettuce, baby leaf spinach, rocket and basil from various cultivars all grown in a vertical farm research facility. We used the standard red white LED light recipe as control, while we changed the spectrum with higher blue and/or higher far-red or apply few days of continuous light stimulation just before the harvest (preharvest). Quality at harvest and quality loss during postharvest storage was monitored. We observed that light quality affects shelf life of baby leaf spinach and rocket by several days. The best light recipe for shelf life had a high blue content (35{\%}) while the worst was with a high far red (25{\%}). In addition, contents of vitamin C, K, nitrate, chlorophyll and flavonols were different under various light quality. Nitrate (in lettuce, rocket and spinach) and vitamin C in rocket were strongly affected by preharvest continuous light, offering a way to reduce the nitrate and improve the antioxidant level. In addition, taste was also found to change as a function of light quality but magnitude of this change is shown to be strongly cultivar dependent.",
keywords = "LED lighting, Nitrate, Shelf life, Taste, Vertical farming, Vitamin C, Vitamin K",
author = "C.C.S. Nicole and J. Mooren and {Pereira Terra}, A.T. and D.H. Larsen and E.J. Woltering and L.F.M. Marcelis and J. Verdonk and R. Schouten and F. Troost",
year = "2019",
doi = "10.17660/ActaHortic.2019.1256.68",
language = "English",
volume = "1256",
pages = "481--488",
journal = "Acta Horticulturae",
issn = "0567-7572",
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Effects of LED lighting recipes on postharvest quality of leafy vegetables grown in a vertical farm. / Nicole, C.C.S.; Mooren, J.; Pereira Terra, A.T.; Larsen, D.H.; Woltering, E.J.; Marcelis, L.F.M.; Verdonk, J.; Schouten, R.; Troost, F.

In: Acta Horticulturae, Vol. 1256, 2019, p. 481-488.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Effects of LED lighting recipes on postharvest quality of leafy vegetables grown in a vertical farm

AU - Nicole, C.C.S.

AU - Mooren, J.

AU - Pereira Terra, A.T.

AU - Larsen, D.H.

AU - Woltering, E.J.

AU - Marcelis, L.F.M.

AU - Verdonk, J.

AU - Schouten, R.

AU - Troost, F.

PY - 2019

Y1 - 2019

N2 - Vertical farming is a technology that controls climate, water, nutrients and light to grow food in a closed environment. This allows vegetables to grow pesticide free and without other contaminants. We investigated how to influence the postharvest quality by controlling the preharvest growth conditions while keeping a high production rate. Several standard LED lighting recipes (red/blue or red/white either with or without far red) are in use in commercial farms. For this research we used lettuce, baby leaf spinach, rocket and basil from various cultivars all grown in a vertical farm research facility. We used the standard red white LED light recipe as control, while we changed the spectrum with higher blue and/or higher far-red or apply few days of continuous light stimulation just before the harvest (preharvest). Quality at harvest and quality loss during postharvest storage was monitored. We observed that light quality affects shelf life of baby leaf spinach and rocket by several days. The best light recipe for shelf life had a high blue content (35%) while the worst was with a high far red (25%). In addition, contents of vitamin C, K, nitrate, chlorophyll and flavonols were different under various light quality. Nitrate (in lettuce, rocket and spinach) and vitamin C in rocket were strongly affected by preharvest continuous light, offering a way to reduce the nitrate and improve the antioxidant level. In addition, taste was also found to change as a function of light quality but magnitude of this change is shown to be strongly cultivar dependent.

AB - Vertical farming is a technology that controls climate, water, nutrients and light to grow food in a closed environment. This allows vegetables to grow pesticide free and without other contaminants. We investigated how to influence the postharvest quality by controlling the preharvest growth conditions while keeping a high production rate. Several standard LED lighting recipes (red/blue or red/white either with or without far red) are in use in commercial farms. For this research we used lettuce, baby leaf spinach, rocket and basil from various cultivars all grown in a vertical farm research facility. We used the standard red white LED light recipe as control, while we changed the spectrum with higher blue and/or higher far-red or apply few days of continuous light stimulation just before the harvest (preharvest). Quality at harvest and quality loss during postharvest storage was monitored. We observed that light quality affects shelf life of baby leaf spinach and rocket by several days. The best light recipe for shelf life had a high blue content (35%) while the worst was with a high far red (25%). In addition, contents of vitamin C, K, nitrate, chlorophyll and flavonols were different under various light quality. Nitrate (in lettuce, rocket and spinach) and vitamin C in rocket were strongly affected by preharvest continuous light, offering a way to reduce the nitrate and improve the antioxidant level. In addition, taste was also found to change as a function of light quality but magnitude of this change is shown to be strongly cultivar dependent.

KW - LED lighting

KW - Nitrate

KW - Shelf life

KW - Taste

KW - Vertical farming

KW - Vitamin C

KW - Vitamin K

U2 - 10.17660/ActaHortic.2019.1256.68

DO - 10.17660/ActaHortic.2019.1256.68

M3 - Article

VL - 1256

SP - 481

EP - 488

JO - Acta Horticulturae

JF - Acta Horticulturae

SN - 0567-7572

ER -