Abstract
Rapid deterioration is a problem with minimally processed pineapple fruit. Effects of 1-methylcyclopropene treatment with or without ascorbic acid treatment on respiration rate, browning and other quality parameters were investigated for minimally processed fruit stored at 4.5°C for 12 days in air. 1-methylcyclopropene treatment reduced respiration rate and browning, and maintained more acceptable visual quality in pineapple fruit slices. 1-methylcyclopropene-treated pineapple fruit slices reached an unacceptable visual quality level after day 8. In contrast, untreated slices were unacceptable after 4 days storage. Respiration rate was reduced fromabout5.8 mL CO2/kg.h in control fruit toabout 4.8–5.0 mL CO2/kg.h in 1-methylcyclopropene-treated fruit at 12 days. Lightness of control pineapple slices reduced from L* 77 to 65 over 12 days, while 1-methylcyclopropene-treated fruits remained atabout L* 72. 1-methylcyclopropene treatment increased electrolyte leakage from pineapple slices. Apart from further suppression of respiration rate, there was no benefit of using 1-methylcyclopropene at above 1.0 µL/L. 1-methylcyclopropene treatment reduced ascorbic acid loss from 44% for untreated fruit to 29% for 1-methylcyclopropene-treated fruit at the end of the 12-day storage. An additive effect of 1-methylcyclopropene treatment was recorded for pineapple fruit slices dipped in 2% (w/v) ascorbic acid solution for 3 min. Ascorbic acid treatment resulted in reduced browning, electrolyte leakage and fruit softening. Therefore, 1-methylcyclopropene treatment helps maintain the quality of minimally processed pineapple fruit at least partially by reducing the hydrolysis of endogenous ascorbic acid.
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Claims 14
Claim · model-written summary
1-methylcyclopropene treatment reduced browning of pineapple fruit slices compared with untreated slices.
- Taxon
- pineapple
Ananas comosust0 - Treatment
- 1-methylcyclopropene treatmente1
- Outcome
- browninge1
- Direction
- reducede1
- Comparator
- untreated slicese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e1“1-methylcyclopropene treatment reduced respiration rate and browning, and maintained more acceptable visual quality in pineapple fruit slices”
e2“In contrast, untreated slices were unacceptable after 4 days storage”
Claim · model-written summary
1-methylcyclopropene treatment maintained more acceptable visual quality of pineapple fruit slices than untreated slices.
- Taxon
- pineappleAnanas comosust0
- Treatment
- 1-methylcyclopropene treatmente1
- Outcome
- visual qualitye1
- Direction
- maintained more acceptablee1
- Comparator
- untreated slicese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e1“1-methylcyclopropene treatment reduced respiration rate and browning, and maintained more acceptable visual quality in pineapple fruit slices”
e2“In contrast, untreated slices were unacceptable after 4 days storage”
Claim · model-written summary
1-methylcyclopropene reduced respiration rate of pineapple fruit slices from about 5.8 to 4.8–5.0 mL CO2/kg.h at 12 days.
- Taxon
- pineappleAnanas comosust0
- Treatment
- 1-methylcyclopropenee3
- Outcome
- Respiration ratee3
- Direction
- reducede3
- Value
- 4.8–5.0 mL CO2/kg.he3
- Qualifier
- at 12 dayse3
- Comparator
- control fruite3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e3“Respiration rate was reduced fromabout5.8 mL CO2/kg.h in control fruit toabout 4.8–5.0 mL CO2/kg.h in 1-methylcyclopropene-treated fruit at 12 days”
Claim · model-written summary
Lightness of control pineapple slices was reduced from L* 77 to 65 over 12 days of storage.
- Taxon
- pineappleAnanas comosust0
- Outcome
- Lightnesse4
- Direction
- reducede4
- Value
- L* 77 to 65e4
- Qualifier
- over 12 dayse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e4“Lightness of control pineapple slices reduced from L* 77 to 65 over 12 days”
Claim · model-written summary
1-methylcyclopropene-treated pineapple slices kept lightness at about L* 72 compared with control slices.
- Taxon
- pineappleAnanas comosust0
- Treatment
- 1-methylcyclopropenee5
- Outcome
- Lightnesse4
- Direction
- remainede5
- Value
- L* 72e5
- Comparator
- control pineapple slicese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e4“Lightness of control pineapple slices reduced from L* 77 to 65 over 12 days”
e5“1-methylcyclopropene-treated fruits remained atabout L* 72”
Claim · model-written summary
1-methylcyclopropene treatment increased electrolyte leakage from pineapple slices.
- Taxon
- pineappleAnanas comosust0
- Treatment
- 1-methylcyclopropene treatmente6
- Outcome
- electrolyte leakagee6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e6“1-methylcyclopropene treatment increased electrolyte leakage from pineapple slices”
Claim · model-written summary
Above 1.0 µL/L, 1-methylcyclopropene gave no benefit for pineapple slice quality beyond respiration suppression.
- Taxon
- pineappleAnanas comosust0
- Treatment
- 1-methylcyclopropenee7
- Outcome
- benefite7
- Direction
- no_changeinferrede7
- Qualifier
- at above 1.0 µL/Le7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e7“Apart from further suppression of respiration rate, there was no benefit of using 1-methylcyclopropene at above 1.0 µL/L”
Claim · model-written summary
Above 1.0 µL/L, 1-methylcyclopropene further suppressed respiration rate of pineapple slices.
- Taxon
- pineappleAnanas comosust0
- Treatment
- 1-methylcyclopropenee7
- Outcome
- further suppression of respiration ratee7
- Direction
- decreaseinferrede7
- Qualifier
- at above 1.0 µL/Le7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e7“Apart from further suppression of respiration rate, there was no benefit of using 1-methylcyclopropene at above 1.0 µL/L”
Claim · model-written summary
1-methylcyclopropene reduced ascorbic acid loss from 44% in untreated pineapple fruit to 29% at the end of 12-day storage.
- Taxon
- pineappleAnanas comosust0
- Treatment
- 1-methylcyclopropene treatmente1
- Outcome
- ascorbic acid losse1
- Direction
- reducede1
- Value
- 44%e1
- Qualifier
- 29% for 1-methylcyclopropene-treated fruit at the end of the 12-day storagee1
- Comparator
- untreated fruite1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e1“1-methylcyclopropene treatment reduced ascorbic acid loss from 44% for untreated fruit to 29% for 1-methylcyclopropene-treated fruit at the end of the 12-day storage”
Claim · model-written summary
An additive effect of 1-methylcyclopropene was recorded for pineapple slices dipped in 2% (w/v) ascorbic acid solution for 3 min.
- Taxon
- pineappleAnanas comosust0
- Treatment
- 2% (w/v) ascorbic acid solution for 3 mine1
- Outcome
- additive effecte1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e1“An additive effect of 1-methylcyclopropene treatment was recorded for pineapple fruit slices dipped in 2% (w/v) ascorbic acid solution for 3 min”
Claim · model-written summary
Ascorbic acid treatment reduced browning, electrolyte leakage and fruit softening of pineapple slices.
- Taxon
- pineappleAnanas comosust0
- Treatment
- Ascorbic acid treatmente1
- Outcome
- browning, electrolyte leakage and fruit softeninge1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e1“Ascorbic acid treatment resulted in reduced browning, electrolyte leakage and fruit softening”
Claim · model-written summary
1-methylcyclopropene maintains quality of minimally processed pineapple fruit, at least partly by reducing hydrolysis of endogenous ascorbic acid.
- Taxon
- pineappleAnanas comosust0
- Treatment
- 1-methylcyclopropene treatmente1
- Compound
- endogenous ascorbic acide1
- Outcome
- quality of minimally processed pineapple fruite1
- Qualifier
- reducing the hydrolysise1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e1“1-methylcyclopropene treatment helps maintain the quality of minimally processed pineapple fruit at least partially by reducing the hydrolysis of endogenous ascorbic acid”
Claim · model-written summary
Minimally processed 1-methylcyclopropene-treated pineapple slices reached unacceptable visual quality after day 8.
- Taxon
- pineappleAnanas comosust0
- Outcome
- unacceptable visual quality levele1
- Qualifier
- after day 8e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e1“1-methylcyclopropene-treated pineapple fruit slices reached an unacceptable visual quality level after day 8”
Claim · model-written summary
Untreated pineapple slices were unacceptable after 4 days of storage.
- Taxon
- pineappleAnanas comosust0
- Outcome
- unacceptablee2
- Qualifier
- after 4 days storagee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of 1-methylcyclopropene on the quality of minimally processed pineapple fruit”
e2“In contrast, untreated slices were unacceptable after 4 days storage”
The same questions in other papers
1-methylcyclopropene · quality: general · Ananas comosus (pineapple)Results differ
1 in the opposite direction
- no effect
1-methylcyclopropene · disease · Ananas comosus (pineapple)Results agree
1 paper in the same direction as this paper
- positive
1-methylcyclopropene · physiology: oxidative · Ananas comosus (pineapple)Results agree
1 paper in the same direction as this paper
- no effect
1-methylcyclopropene · quality: phytochemicals · Ananas comosus (pineapple)Results agree
1 paper in the same direction as this paper
- positive
ascorbic acid · physiology: oxidative · Ananas comosus (pineapple)Results agree
1 paper in the same direction as this paper
- positive
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.