Abstract
The effects of controlled atmosphere (CA) at 5, 21 (air, control) and 100 % O2 on chilling injury, respiratory and antioxidative parameters at 5, 10 and 20°C in cucumber fruit were determined. The appearance of chilling injury symptoms in cucumber was delayed in both CA treatments; 100 % O2 effectively reduced pitting than did the 5 % O2 treatment. Respiration and ethylene production rates were suppressed in cucumber fruit stored at 5°C to a greater extent in 100 % O2 than in 5 % O2 and air. At 20 °C, however, 100 % O2 increased the respiration rate to rates higher than in 5 and 21 % O2. The respiration rate of cucumber fruit stored in 100 % O2 at 10°C was lower than control but higher than the fruit stored in 5 % O2. Analyses of fruit for changes in enzymatic antioxidant; superoxide dismutase (SOD) and catalase, and non-enzymatic antioxidant, ascorbic acid and glutathione revealed that those stored at 5°C, SOD activity temporarily increased on D-1 by 5 and 100 % O2 treatments; at D-5, its activities in all storage atmospheres increased. Catalase activity in the control fruit was higher than those at both 5 and 100 % O2, whereas glutathione concentration changed slightly from the initial level at different storage conditions. Ascorbic acid content in all storage atmospheres decreased, exhibiting the same trend throughout the storage period.
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Claims 10
Claim · model-written summary
Both controlled atmospheres delayed chilling injury symptoms in cucumber.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- both CA treatmentse0
- Outcome
- appearance of chilling injury symptomse0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The appearance of chilling injury symptoms in cucumber was delayed in both CA treatments”
Claim · model-written summary
At 100% oxygen, cucumber pitting was reduced more than at 5% oxygen.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- 100 % O2e0
- Outcome
- pittinge0
- Direction
- reducede0
- Comparator
- 5 % O2 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100 % O2 effectively reduced pitting than did the 5 % O2 treatment”
e1“chilling injury symptoms in cucumber was delayed”
Claim · model-written summary
At 5°C, 100% oxygen suppressed cucumber fruit respiration more than 5% oxygen and air.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- 100 % O2e0
- Outcome
- Respiration and ethylene production ratese0
- Direction
- suppressede0
- Qualifier
- stored at 5°Ce0
- Comparator
- 5 % O2 and aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Respiration and ethylene production rates were suppressed in cucumber fruit stored at 5°C to a greater extent in 100 % O2 than in 5 % O2 and air”
Claim · model-written summary
At 20°C, 100% oxygen raised cucumber fruit respiration above rates under 5% and 21% oxygen.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- 100 % O2e0
- Outcome
- respiration ratee0
- Direction
- increasede0
- Qualifier
- At 20 °Ce0
- Comparator
- 5 and 21 % O2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 20 °C, however, 100 % O2 increased the respiration rate to rates higher than in 5 and 21 % O2”
e1“chilling injury symptoms in cucumber was delayed”
Claim · model-written summary
At 10°C, cucumber fruit respiration under 100% oxygen was below the control but above 5% oxygen.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- 100 % O2e0
- Outcome
- respiration ratee0
- Direction
- lowere0
- Qualifier
- at 10°Ce0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The respiration rate of cucumber fruit stored in 100 % O2 at 10°C was lower than control but higher than the fruit stored in 5 % O2”
Claim · model-written summary
At 5°C on day 1, both 5% and 100% oxygen temporarily increased cucumber fruit SOD activity.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- 5 and 100 % O2 treatmentse0
- Outcome
- SOD activitye0
- Direction
- increasede0
- Qualifier
- stored at 5°Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those stored at 5°C, SOD activity temporarily increased on D-1 by 5 and 100 % O2 treatments”
e1“chilling injury symptoms in cucumber was delayed”
Claim · model-written summary
By day 5, cucumber SOD activity increased in every storage atmosphere.
- Taxon
- cucumberCucumis sativuse1
- Outcome
- SOD activitye2
- Direction
- increasede0
- Qualifier
- all storage atmospherese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at D-5, its activities in all storage atmospheres increased”
e1“chilling injury symptoms in cucumber was delayed”
e2“SOD activity temporarily increased”
Claim · model-written summary
Control cucumber fruit had higher catalase activity than fruit at 5% or 100% oxygen.
- Taxon
- cucumberCucumis sativuse1
- Outcome
- Catalase activitye0
- Direction
- highere0
- Comparator
- 5 and 100 % O2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Catalase activity in the control fruit was higher than those at both 5 and 100 % O2”
e1“chilling injury symptoms in cucumber was delayed”
Claim · model-written summary
Cucumber fruit glutathione concentration changed only slightly from its initial level across storage conditions.
- Taxon
- cucumberCucumis sativuse1
- Outcome
- glutathione concentratione0
- Direction
- changed slightlye0
- Comparator
- initial levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glutathione concentration changed slightly from the initial level at different storage conditions”
e1“chilling injury symptoms in cucumber was delayed”
Claim · model-written summary
Cucumber fruit ascorbic acid content decreased across all storage atmospheres over storage.
- Taxon
- cucumberCucumis sativuse1
- Outcome
- Ascorbic acid contente0
- Direction
- decreasede0
- Qualifier
- all storage atmospherese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ascorbic acid content in all storage atmospheres decreased, exhibiting the same trend throughout the storage period”
e1“chilling injury symptoms in cucumber was delayed”
The same questions in other papers
storage · crop injury · Cucumis sativus (cucumber)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
3 papers more in this group
See all 7 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.