Abstract
As an important factor affecting the growth and development of plants, light gives wide range regulating effects on physiological metabolisms, photosynthesis characteristic, quality and aging of plants during the growth . However, the research whether light can improve the quality of fruits and vegetables and prolong the storage period of is rarely reported home and abroad. Three monochromatic light , red, blue and green were used to the irradiation of broccoli. It was found that the inhibitory effect of red light could inhibit yellowing of postharvest broccoli better than that of blue light while green light could accelerate the yellowing, therefore this paper focused on the yellowing inhibitory effect of LED monochromatic red light on postharvest broccoli. The LED monochromatic red light with wavelength (625±5)nm, light intensity (100±5)Lx was used to provide continuous irradiation to broccoli with no light treatment as control. The results showed that: LED monochromatic light could inhibit the increase of chromatic aberration L value. The chromatic aberration -a/b value was maintained and the chlorophyll degradation was delayed. Meanwhile, the broccoli commodity was effectively maintained because of the delay of the respiration peak and the reduction of respiratory intensity as well as ethylene release rate . Correlation analysis showed that, after red LED monochromatic light treatment of broccoli, a positive very significant correlation (p<0.01) was found between the ethylene release rate and yellowing index. Compared with conventional no-light, treatments of LED monochrome red could extend the storage period around 5d for broccoli, and the results can provide a theoretical basis for cold storage of Broccoli.
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Claims 11
Claim · model-written summary
Monochromatic red LED light inhibited the increase of the chromatic aberration L value of broccoli relative to no light.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - Treatment
- LED monochromatic lighte3
- Outcome
- chromatic aberration L valuee3
- Direction
- inhibit the increasee3
- Comparator
- conventional no-lighte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e3“LED monochromatic light could inhibit the increase of chromatic aberration L value”
e7“Compared with conventional no-light, treatments of LED monochrome red could extend the storage period around 5d for broccoli”
Claim · model-written summary
Monochromatic red LED light maintained the chromatic aberration -a/b value of broccoli relative to no light.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- LED monochromatic lighte3
- Outcome
- chromatic aberration -a/b valuee4
- Direction
- maintainede4
- Comparator
- conventional no-lighte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e3“LED monochromatic light could inhibit the increase of chromatic aberration L value”
e4“The chromatic aberration -a/b value was maintained and the chlorophyll degradation was delayed”
e7“Compared with conventional no-light, treatments of LED monochrome red could extend the storage period around 5d for broccoli”
Claim · model-written summary
Monochromatic red LED light delayed chlorophyll degradation in broccoli relative to no light.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- LED monochromatic lighte3
- Outcome
- chlorophyll degradatione4
- Direction
- delayede4
- Comparator
- conventional no-lighte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e3“LED monochromatic light could inhibit the increase of chromatic aberration L value”
e4“The chromatic aberration -a/b value was maintained and the chlorophyll degradation was delayed”
e7“Compared with conventional no-light, treatments of LED monochrome red could extend the storage period around 5d for broccoli”
Claim · model-written summary
Monochromatic red LED light delayed the respiration peak of broccoli relative to no light.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- LED monochromatic lighte3
- Outcome
- respiration peake5
- Direction
- delaye5
- Comparator
- conventional no-lighte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e3“LED monochromatic light could inhibit the increase of chromatic aberration L value”
e5“the broccoli commodity was effectively maintained because of the delay of the respiration peak and the reduction of respiratory intensity as well as ethylene release rate”
e7“Compared with conventional no-light, treatments of LED monochrome red could extend the storage period around 5d for broccoli”
Claim · model-written summary
Monochromatic red LED light reduced the respiratory intensity of broccoli relative to no light.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- LED monochromatic lighte3
- Outcome
- respiratory intensitye5
- Direction
- reductione5
- Comparator
- conventional no-lighte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e3“LED monochromatic light could inhibit the increase of chromatic aberration L value”
e5“the broccoli commodity was effectively maintained because of the delay of the respiration peak and the reduction of respiratory intensity as well as ethylene release rate”
e7“Compared with conventional no-light, treatments of LED monochrome red could extend the storage period around 5d for broccoli”
Claim · model-written summary
Monochromatic red LED light reduced the ethylene release rate of broccoli relative to no light.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- LED monochromatic lighte3
- Outcome
- ethylene release ratee5
- Direction
- reductione5
- Comparator
- conventional no-lighte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e3“LED monochromatic light could inhibit the increase of chromatic aberration L value”
e5“the broccoli commodity was effectively maintained because of the delay of the respiration peak and the reduction of respiratory intensity as well as ethylene release rate”
e7“Compared with conventional no-light, treatments of LED monochrome red could extend the storage period around 5d for broccoli”
Claim · model-written summary
Monochromatic red LED light effectively maintained the broccoli commodity relative to no light.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- LED monochromatic lighte3
- Outcome
- broccoli commoditye5
- Direction
- effectively maintainede5
- Comparator
- conventional no-lighte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e3“LED monochromatic light could inhibit the increase of chromatic aberration L value”
e5“the broccoli commodity was effectively maintained because of the delay of the respiration peak and the reduction of respiratory intensity as well as ethylene release rate”
e7“Compared with conventional no-light, treatments of LED monochrome red could extend the storage period around 5d for broccoli”
Claim · model-written summary
The inhibitory effect of red light on broccoli yellowing was better than that of blue light.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- red lighte2
- Outcome
- yellowinge2
- Direction
- bettere2
- Comparator
- blue lighte2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e2“the inhibitory effect of red light could inhibit yellowing of postharvest broccoli better than that of blue light while green light could accelerate the yellowing”
Claim · model-written summary
Green light accelerated yellowing of postharvest broccoli.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- green lighte2
- Outcome
- yellowinge2
- Direction
- acceleratee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e2“the inhibitory effect of red light could inhibit yellowing of postharvest broccoli better than that of blue light while green light could accelerate the yellowing”
Claim · model-written summary
Monochromatic red LED light extended the storage period of broccoli by around 5 days compared with conventional no-light treatment.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- LED monochrome rede7
- Outcome
- storage periode7
- Direction
- extende7
- Value
- around 5de7
- Comparator
- conventional no-lighte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e7“Compared with conventional no-light, treatments of LED monochrome red could extend the storage period around 5d for broccoli”
Claim · model-written summary
After red LED treatment, ethylene release rate and yellowing index were positively correlated in broccoli (p<0.01).
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- red LED monochromatic lighte1
- Outcome
- ethylene release rate and yellowing indexe6
- Direction
- positivee6
- Qualifier
- p<0.01e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli”
e6“a positive very significant correlation (p<0.01) was found between the ethylene release rate and yellowing index”
e1“after red LED monochromatic light treatment of broccoli”
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