Abstract
`Snow King' peaches ( Prunus persica ) harvested at commercial maturity were subjected to different carbon dioxide (CO 2 ) and oxygen (O 2 ) atmosphere combinations for a 2-week simulated transportation [0 °C (32 °F)] period after 1 week of cold storage in air (0 °C). In 1998, air or 5%, 10%, 15%, or 20% CO 2 combined with 3% or 6% O 2 were used during shipment. The trial was repeated in 1999, but for this year half of the fruit were treated with a 50 mg·L -1 (ppm) aminoethoxyvinylglycine (AVG) postharvest dip before storage and simulated shipment. In addition, O 2 levels during simulated shipment were reduced to 1.5% and 3%. At harvest and after the 2-week simulated shipment, fruit flesh firmness, soluble solids concentration (SSC), titratable acidity (TA), and chilling injury (CI) were evaluated. For both years, there were no significant differences in quality attributes among the different treatments after the simulated shipment period. SSC and TA did not change during 5 days postshipment ripening at 20 °C (68 °F). In 1998 all treatments softened rapidly during the postshipment ripening at 20 °C, and were ready to eat [13 N (1 N = 0.225 lb force)] after 3 days. In 1999, both the high CO 2 atmospheres during shipment and the AVG postharvest dip slowed the rate of softening during subsequent ripening at 20 °C. With respect to fruit softening, there was significant interaction between storage atmosphere and AVG treatment. AVG-treated fruit shipped under a 20% CO 2 + 3% O 2 atmosphere did not soften to the transfer point (firmness = 27 N) within our 5-day ripening period, while fruit not treated with AVG and shipped under the same atmosphere softened to the transfer point in 3 days. Control fruit (no AVG + air shipment) softened to the transfer point in 2 days. Our previous work found that when white flesh peaches soften to less than 27 N firmness they become very susceptible to impact bruise injury during retail distribution. We call this critical level of fruit flesh firmness the transfer point. Symptoms of CI, low O 2 , or high CO 2 injury were not observed in any treatment in either year.
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Claims 10
Claim · model-written summary
After simulated shipment, quality attributes did not differ significantly among the atmosphere and AVG treatments in either year.
- Taxon
- Peach
Prunus persicat0 - Treatment
- different treatmentse0
- Outcome
- quality attributese0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For both years, there were no significant differences in quality attributes among the different treatments after the simulated shipment period”
t0“`Snow King' Peach”
Claim · model-written summary
Soluble solids concentration and titratable acidity did not change during 5 days of postshipment ripening at 20 C.
- Taxon
- PeachPrunus persicat0
- Outcome
- SSC and TAe0
- Direction
- did not changee0
- Qualifier
- 5 days postshipment ripening at 20 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SSC and TA did not change during 5 days postshipment ripening at 20 °C (68 °F)”
t0“`Snow King' Peach”
Claim · model-written summary
In 1998 all treatments softened rapidly during postshipment ripening at 20 C and were ready to eat after 3 days.
- Taxon
- PeachPrunus persicat0
- Outcome
- softened rapidlye0
- Value
- 3 dayse0
- Qualifier
- In 1998e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1998 all treatments softened rapidly during the postshipment ripening at 20 °C, and were ready to eat [13 N (1 N = 0.225 lb force)] after 3 days”
t0“`Snow King' Peach”
Claim · model-written summary
In 1999 high CO2 atmospheres during shipment slowed the rate of softening during subsequent ripening at 20 C.
- Taxon
- PeachPrunus persicat0
- Treatment
- the high CO 2 atmospheres during shipmente0
- Outcome
- rate of softeninge0
- Direction
- slowede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the high CO 2 atmospheres during shipment and the AVG postharvest dip slowed the rate of softening during subsequent ripening at 20 °C”
t0“`Snow King' Peach”
Claim · model-written summary
In 1999 the AVG postharvest dip slowed the rate of softening during subsequent ripening at 20 C.
- Taxon
- PeachPrunus persicat0
- Treatment
- the AVG postharvest dipe0
- Outcome
- rate of softeninge0
- Direction
- slowede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the high CO 2 atmospheres during shipment and the AVG postharvest dip slowed the rate of softening during subsequent ripening at 20 °C”
t0“`Snow King' Peach”
Claim · model-written summary
There was a significant interaction between storage atmosphere and AVG treatment for fruit softening.
- Taxon
- PeachPrunus persicat0
- Treatment
- storage atmosphere and AVG treatmente0
- Outcome
- fruit softeninge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With respect to fruit softening, there was significant interaction between storage atmosphere and AVG treatment”
t0“`Snow King' Peach”
Claim · model-written summary
AVG-treated fruit shipped under 20% CO2 + 3% O2 did not soften to the transfer point within the 5-day ripening period, whereas untreated fruit under the same atmosphere softened to it in 3 days.
- Taxon
- PeachPrunus persicat0
- Treatment
- AVG-treated fruit shipped under a 20% CO 2 + 3% O 2 atmospheree0
- Outcome
- soften to the transfer pointe0
- Value
- 5-day ripening periode0
- Qualifier
- in 3 dayse0
- Comparator
- fruit not treated with AVG and shipped under the same atmospheree0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AVG-treated fruit shipped under a 20% CO 2 + 3% O 2 atmosphere did not soften to the transfer point (firmness = 27 N) within our 5-day ripening period, while fruit not treated with AVG and shipped under the same atmosphere softened to the transfer point in 3 days”
t0“`Snow King' Peach”
Claim · model-written summary
Control fruit (no AVG, air shipment) softened to the transfer point in 2 days.
- Taxon
- PeachPrunus persicat0
- Outcome
- softened to the transfer pointe0
- Value
- 2 dayse0
- Qualifier
- no AVG + air shipmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Control fruit (no AVG + air shipment) softened to the transfer point in 2 days”
t0“`Snow King' Peach”
Claim · model-written summary
Symptoms of chilling injury, low O2 injury or high CO2 injury were not observed in any treatment in either year.
- Taxon
- PeachPrunus persicat0
- Outcome
- Symptoms of CI, low O 2 , or high CO 2 injurye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Symptoms of CI, low O 2 , or high CO 2 injury were not observed in any treatment in either year”
t0“`Snow King' Peach”
Claim · model-written summary
White flesh peaches softening below 27 N firmness become very susceptible to impact bruise injury during retail distribution (authors' earlier work).
Verbatim
e0“when white flesh peaches soften to less than 27 N firmness they become very susceptible to impact bruise injury during retail distribution”
The same questions in other papers
co2 · quality: postharvest · Prunus persica (peach)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 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.