Abstract
This study investigated the postharvest changes in the activities of invertase (EC ; 3. 2. 1. 26), sucrose synthase (SS ; EC 2. 4. 1. 13) and sucrose phosphate synthase (SPS ; EC 4. 4. 1. 14) in cucumber fruits (Cucumis sativus L. cv. Project X) stored at 13 and 25°C for 20 days to understand the changes in fruit quality in relation to firmness and color after harvest. The acid invertase activities in the soluble and cell-wall-bound fractions in the cucumber stored at 25°C were significantly higher than those stored at 13°C from days 4 to 16. The acid invertase activity was 30-35 times higher than the SS activity on day 8 of storage at 25°C. The SS and SPS activities in the cucumber fruits stored at 25°C showed the highest activity on day 8. Low-temperature storage was effective in decreasing invertase activity in both fractions, thereby suppressing sucrose degradation. Low-temperature storage at 13°C caused no chilling injury to the cucumber. It was effective in maintaining sucrose content, color and firmness of cucumber fruits.
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Claims 7
Claim · model-written summary
At 25°C, soluble and cell-wall-bound acid invertase activities were significantly higher than at 13°C from days 4 to 16.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- 25°Ce0
- Outcome
- acid invertase activities in the soluble and cell-wall-bound fractionse0
- Direction
- highere0
- Qualifier
- from days 4 to 16e0
- Comparator
- 13°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The acid invertase activities in the soluble and cell-wall-bound fractions in the cucumber stored at 25°C were significantly higher than those stored at 13°C from days 4 to 16.”
Claim · model-written summary
Acid invertase activity was 30-35 times SS activity on day 8 at 25°C.
- Taxon
- CucumberCucumis sativust0
- Outcome
- acid invertase activitye0
- Direction
- highere0
- Value
- 30-35 timese0
- Qualifier
- on day 8 of storage at 25°Ce0
- Comparator
- SS activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The acid invertase activity was 30-35 times higher than the SS activity on day 8 of storage at 25°C.”
t0“Cucumber Fruit”
Claim · model-written summary
SS and SPS activities at 25°C peaked on day 8.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- SS and SPS activitiese0
- Direction
- higheste0
- Qualifier
- stored at 25°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The SS and SPS activities in the cucumber fruits stored at 25°C showed the highest activity on day 8.”
Claim · model-written summary
Low-temperature storage decreased invertase activity in both fractions.
- Taxon
- CucumberCucumis sativust0
- Treatment
- Low-temperature storagee0
- Outcome
- invertase activity in both fractionse0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-temperature storage was effective in decreasing invertase activity in both fractions, thereby suppressing sucrose degradation.”
t0“Cucumber Fruit”
Claim · model-written summary
Low-temperature storage suppressed sucrose degradation.
- Taxon
- CucumberCucumis sativust0
- Treatment
- Low-temperature storagee0
- Outcome
- sucrose degradatione0
- Direction
- suppressinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-temperature storage was effective in decreasing invertase activity in both fractions, thereby suppressing sucrose degradation.”
t0“Cucumber Fruit”
Claim · model-written summary
Storage at 13°C caused no chilling injury.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Low-temperature storage at 13°Ce0
- Outcome
- no chilling injurye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-temperature storage at 13°C caused no chilling injury to the cucumber.”
Claim · model-written summary
Storage at 13°C maintained cucumber sucrose content, color and firmness.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Low-temperature storage at 13°Ce1
- Outcome
- sucrose content, color and firmnesse0
- Direction
- maintaininge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was effective in maintaining sucrose content, color and firmness of cucumber fruits.”
t0“Postharvest Changes in the Activities of Sugar-metabolizing Enzymes in Cucumber Fruit Stored at Different Temperatures”
e1“Low-temperature storage at 13°C caused no chilling injury to the cucumber.”
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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.