Abstract
The effects of postharvest treatments of air and 20 kPa CO 2 (in air) at 2 or 20 °C on color, firmness, accumulations of acetaldehyde, ethanol, and ethyl acetate, activities of pyruvate decarboxylase (PDC) and alcohol dehydrogenase (ADH) activity, and expression of an ADH gene were studied in strawberry fruit ( Fragaria × ananassa Duch. cv. Jewel). CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C, while the rate of color changes was affected by CO 2 treatment at 20 °C but not at 2 °C. Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit. All three compounds accumulated in fruits at 2 °C. At 20 °C, ethanol accumulated slightly by day 6, although ethyl acetate accumulated in fruit from both atmospheres. PDC enzyme activity was higher in CO 2 -treated fruit than their air-treated control at 2 °C but not at 20 °C. ADH activity and ADH mRNA accumulation of the CO 2 -treated berries were higher than in air at 20 °C but not 2 °C. The results, overall, indicate that patterns of change among gene expression, enzyme activities, and fermentation product accumulation were not consistent.
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Claims 14
Claim · model-written summary
CO2 enhanced strawberry firmness at 2 °C.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae0t0e1e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
CO2 did not enhance strawberry firmness at 20 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
CO2 affected the color change rate at 20 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the rate of color changes was affected by CO 2 treatment at 20 °C but not at 2 °C”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
CO2 did not affect the color change rate at 2 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the rate of color changes was affected by CO 2 treatment at 20 °C but not at 2 °C”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
Acetaldehyde, ethanol and ethyl acetate accumulated at 2 °C in CO2 treated strawberries.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All three compounds accumulated in fruits at 2 °C.”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
Ethanol accumulated slightly by day 6 at 20 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 20 °C, ethanol accumulated slightly by day 6”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
Ethyl acetate accumulated at 20 °C in both atmospheres.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethyl acetate accumulated in fruit from both atmospheres”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
PDC activity was higher under CO2 than air at 2 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PDC enzyme activity was higher in CO 2 -treated fruit than their air-treated control at 2 °C but not at 20 °C.”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
PDC activity was not higher under CO2 at 20 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PDC enzyme activity was higher in CO 2 -treated fruit than their air-treated control at 2 °C but not at 20 °C.”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
ADH activity was higher under CO2 than air at 20 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ADH activity and ADH mRNA accumulation of the CO 2 -treated berries were higher than in air at 20 °C but not 2 °C.”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
ADH mRNA accumulation was higher under CO2 than air at 20 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ADH activity and ADH mRNA accumulation of the CO 2 -treated berries were higher than in air at 20 °C but not 2 °C.”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
ADH activity was not higher under CO2 at 2 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ADH activity and ADH mRNA accumulation of the CO 2 -treated berries were higher than in air at 20 °C but not 2 °C.”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
ADH mRNA accumulation was not higher under CO2 at 2 °C.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ADH activity and ADH mRNA accumulation of the CO 2 -treated berries were higher than in air at 20 °C but not 2 °C.”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
Claim · model-written summary
Patterns among gene expression, enzyme activities and fermentation products were inconsistent.
- Taxon
- strawberryFragaria ×ananassae0t0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“patterns of change among gene expression, enzyme activities, and fermentation product accumulation were not consistent”
t0“Fruit Quality, Fermentation Products, and Activities of Associated Enzymes During Elevated CO2 Treatment of Strawberry Fruit at High and Low Temperatures”
e1“CO 2 treatment enhanced strawberry fruit firmness at 2 °C but not 20 °C”
e2“Temperature also affected the accumulation of acetaldehyde, ethanol and ethyl acetate in CO 2 -treated fruit.”
The same questions in other papers
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co2 · quality: postharvest · Fragaria x ananassa (strawberry)Positive and negative results
34 papers in the same direction as this paper · 4 in the opposite direction
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35 papers more in this group
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2 papers in the same direction as this paper
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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.