Abstract
BACKGROUND: This study used the isobaric tags for relative and absolute quantitation (iTRAQ) technique to determine the effects of active modified atmosphere packaging (MAP) on the modulation of lettuce (Lactuca sativa L. Grand Rapid) colour and senescence. Lettuces, treated or not treated (control) with MAP, were placed in a refrigerator (4 °C, 90-95% relative humidity) for analysis at 3-day intervals until the ninth day. RESULTS: MAP treatment could suppress weight loss, loss of green colour and brittleness, and browning of lettuce; at the same time, MAP preserved the green colour of lettuce by inhibiting chlorophyll degradation and chloroplast disruption, and delayed lettuce senescence by inhibiting malondialdehyde (MDA) generation and increasing antioxidant enzyme activity. In total, 285 differentially abundant proteins (144 upregulated proteins and 141 downregulated proteins) were identified in MAP-treated and non-treated lettuce. Further analysis revealed that MAP regulated the expression of proteins involved in photosynthesis (e.g. pheophorbide a oxygenase, PaO; porphobilinogen deaminase, PBGD), and thus preserved lettuce colour. The iTRAQ analysis also showed that MAP regulated the expression of antioxidant enzymes and reduced the accumulation of reactive oxygen species, and thus delayed lettuce senescence. CONCLUSION: MAP can maintain vegetable quality by inhibiting chlorophyll degradation, delaying vegetable senescence. © 2018 Society of Chemical Industry.
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Claims 7
Claim · model-written summary
MAP suppressed lettuce weight loss, green color loss, brittleness and browning.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- MAPe0
- Outcome
- weight loss, loss of green colour and brittlenesse0
- Direction
- suppresse0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MAP treatment could suppress weight loss, loss of green colour and brittleness, and browning of lettuce”
e1“Lettuces, treated or not treated (control) with MAP”
Claim · model-written summary
MAP preserved lettuce green color by inhibiting chlorophyll degradation and chloroplast disruption.
- Taxon
- lettuceLactuca sativae0
- Treatment
- MAPe0
- Outcome
- green colour of lettucee0
- Qualifier
- inhibiting chlorophyll degradation and chloroplast disruptione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MAP preserved the green colour of lettuce by inhibiting chlorophyll degradation and chloroplast disruption”
Claim · model-written summary
MAP delayed lettuce senescence by inhibiting MDA generation and increasing antioxidant enzyme activity.
- Taxon
- lettuceLactuca sativae0
- Treatment
- MAPe1
- Outcome
- lettuce senescencee0
- Qualifier
- inhibiting malondialdehyde (MDA) generation and increasing antioxidant enzyme activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“delayed lettuce senescence by inhibiting malondialdehyde (MDA) generation and increasing antioxidant enzyme activity”
e1“MAP preserved the green colour of lettuce by inhibiting chlorophyll degradation and chloroplast disruption, and delayed lettuce senescence”
Claim · model-written summary
MAP treated lettuce had 144 upregulated proteins.
- Taxon
- lettuceLactuca sativae0
- Treatment
- MAP-treatede0
- Outcome
- upregulated proteinse0
- Direction
- upregulatede0
- Value
- 144e0
- Comparator
- non-treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In total, 285 differentially abundant proteins (144 upregulated proteins and 141 downregulated proteins) were identified in MAP-treated and non-treated lettuce”
Claim · model-written summary
MAP treated lettuce had 141 downregulated proteins.
- Taxon
- lettuceLactuca sativae0
- Treatment
- MAP-treatede0
- Outcome
- downregulated proteinse0
- Direction
- downregulatede0
- Value
- 141e0
- Comparator
- non-treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In total, 285 differentially abundant proteins (144 upregulated proteins and 141 downregulated proteins) were identified in MAP-treated and non-treated lettuce”
Claim · model-written summary
MAP regulated photosynthesis related proteins, including PaO and PBGD, in relation to preserved lettuce color.
- Taxon
- lettuceLactuca sativae0
- Treatment
- MAPe0
- Gene
- pheophorbide a oxygenase, PaOe0
- Outcome
- lettuce coloure0
- Qualifier
- regulated the expression of proteins involved in photosynthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MAP regulated the expression of proteins involved in photosynthesis (e.g. pheophorbide a oxygenase, PaO; porphobilinogen deaminase, PBGD), and thus preserved lettuce colour”
Claim · model-written summary
MAP regulated antioxidant enzyme expression and reduced reactive oxygen species accumulation, delaying lettuce senescence.
- Taxon
- lettuceLactuca sativae0
- Treatment
- MAPe0
- Outcome
- lettuce senescencee0
- Qualifier
- regulated the expression of antioxidant enzymes and reduced the accumulation of reactive oxygen speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MAP regulated the expression of antioxidant enzymes and reduced the accumulation of reactive oxygen species, and thus delayed lettuce senescence”
The same questions in other papers
storage · quality: postharvest · Lactuca sativa (garden lettuce)Positive and negative results
13 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- no effect
13 papers more in this group
See all 17 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.