Abstract
Loss of sugars contributes to accelerate postharvest senescence of broccoli. Several treatments have been developed to delay senescence, but in many cases their effects on sugar metabolism were not analyzed. We studied the effect of harvest at different times of day (08:00, 13:00 and 18:00 h) and of several postharvest treatments as heat treatment (HT), modified atmosphere (MA) and 1-methylcylcopropene (1-MCP) on sugar levels and activities of enzymes related to sucrose and starch degradation. Harvesting at the end of day delayed the loss of chlorophylls and caused the lowest decrement in sugars, although no differences in invertase, sucrose synthase and β-amylase activities were detected among samples. Treatments of MA and 1-MCP caused a lower loss of glucose and fructose, while HT caused a lower decrement of sucrose. Treated samples maintained higher levels of chlorophylls. The treatments reduced the activity of invertase and sucrose synthase and induced higher levels of β-amylase activity. Harvesting at the end of day and performing simultaneously a MA treatment could be a good combination to maintain the green color of the inflorescence and sugar levels during postharvest of broccoli.
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Claims 10
Claim · model-written summary
End-of-day harvest delayed chlorophyll loss.
- Taxon
- broccoli
Brassica oleracea var. italicat0 - Treatment
- Harvesting at the end of daye0
- Outcome
- loss of chlorophyllse0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvesting at the end of day delayed the loss of chlorophylls”
t0“broccoli”
Claim · model-written summary
End-of-day harvest produced the smallest sugar decrease.
- Taxon
- broccoliBrassica oleracea var. italicat0
- Treatment
- Harvesting at the end of daye0
- Outcome
- sugarse0
- Direction
- lowest decremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvesting at the end of day delayed the loss of chlorophylls and caused the lowest decrement in sugars”
t0“broccoli”
Claim · model-written summary
Invertase, sucrose synthase and β-amylase activities did not differ among harvest-time samples.
- Taxon
- broccoliBrassica oleracea var. italicat0
- Outcome
- invertase, sucrose synthase and β-amylase activitiese0
- Direction
- no differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no differences in invertase, sucrose synthase and β-amylase activities were detected among samples”
t0“broccoli”
Claim · model-written summary
Modified atmosphere reduced glucose and fructose loss.
- Taxon
- broccoliBrassica oleracea var. italicat0
- Treatment
- MAe0
- Outcome
- loss of glucose and fructosee0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments of MA and 1-MCP caused a lower loss of glucose and fructose”
t0“broccoli”
Claim · model-written summary
1-MCP reduced glucose and fructose loss.
- Taxon
- broccoliBrassica oleracea var. italicat0
- Treatment
- 1-MCPe0
- Outcome
- loss of glucose and fructosee0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments of MA and 1-MCP caused a lower loss of glucose and fructose”
t0“broccoli”
Claim · model-written summary
Heat treatment reduced sucrose loss.
- Taxon
- broccoliBrassica oleracea var. italicat0
- Treatment
- HTe0
- Outcome
- sucrosee0
- Direction
- lower decremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT caused a lower decrement of sucrose”
t0“broccoli”
Claim · model-written summary
Postharvest-treated broccoli retained higher chlorophyll levels.
- Taxon
- broccoliBrassica oleracea var. italicat0
- Treatment
- Treated samplese0
- Outcome
- levels of chlorophyllse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treated samples maintained higher levels of chlorophylls”
t0“broccoli”
Claim · model-written summary
Postharvest treatments reduced invertase and sucrose synthase activity.
- Taxon
- broccoliBrassica oleracea var. italicat0
- Treatment
- treatmentse0
- Outcome
- activity of invertase and sucrose synthasee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatments reduced the activity of invertase and sucrose synthase”
t0“broccoli”
Claim · model-written summary
Postharvest treatments raised β-amylase activity.
- Taxon
- broccoliBrassica oleracea var. italicat0
- Treatment
- treatmentse0
- Outcome
- β-amylase activitye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatments reduced the activity of invertase and sucrose synthase and induced higher levels of β-amylase activity”
t0“broccoli”
Claim · model-written summary
The authors suggest combining end-of-day harvest with modified atmosphere to retain green color and sugars.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Outcome
- maintain the green color of the inflorescence and sugar levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvesting at the end of day and performing simultaneously a MA treatment could be a good combination to maintain the green color of the inflorescence and sugar levels during postharvest of broccoli”
The same questions in other papers
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See all 13 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.