Paper · 1996 · Journal of the American Society for Horticultural Science

Optimum O2 or CO2 Atmosphere for Storing Broccoli Florets at Various Temperatures

Hidemi Izumi; Alley E. Watada; Willard Douglas

9
claims
18
verbatim quotes
69
citations
2
research areas
✓
Open access

Abstract

`Marathon' broccoli (Brassica oleracea L. var. italica) florets were stored in air, low O 2 (0.25%, 0.5%, and 1 %) or high CO 2 (3%,6%, and 10%) at 0, 5, and 10C. Oxygen consumption and CO 2 production were reduced under low O 2 or high CO 2 atmosphere, the reduction being greater at lower O 2 and higher CO 2 levels. N o differences were found in ethylene production among the different atmospheres. Low O 2 and high CO 2 retained color of broccoli florets to about the same extent at 10C but had no effect at 0 and 5C. Development of soft rot and browning was suppressed by low O 2 or high CO 2 , but offensive off-odor occurred in 0.25%02 at all temperatures and 0.5% O 2 at 10C. These results indicate that the best O 2 and CO 2 levels seem to be 0.5% O 2 and 10% CO 2 at 0 and 5C, and 1% O 2 and 10% CO 2 at 10C.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 9

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Low oxygen or high carbon dioxide reduced oxygen consumption, more at lower oxygen and higher carbon dioxide levels.

Treatment
low O 2 or high CO 2 atmospheree0
Outcome
Oxygen consumptione0
Direction
reducede0
Qualifier
reduction being greater at lower O 2 and higher CO 2 levelse0
Comparator
aire1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Oxygen consumption and CO 2 production were reduced under low O 2 or high CO 2 atmosphere, the reduction being greater at lower O 2 and higher CO 2 levels”

✓ located verbatim in the source · abstract, characters 163–317 · show in text ↑
e1

“broccoli (Brassica oleracea L. var. italica) florets were stored in air”

✓ located verbatim in the source · abstract, characters 11–82 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Low oxygen or high carbon dioxide reduced carbon dioxide production.

Treatment
low O 2 or high CO 2 atmospheree0
Outcome
CO 2 productione0
Direction
reducede0
Comparator
aire1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Oxygen consumption and CO 2 production were reduced under low O 2 or high CO 2 atmosphere, the reduction being greater at lower O 2 and higher CO 2 levels”

✓ located verbatim in the source · abstract, characters 163–317 · show in text ↑
e1

“broccoli (Brassica oleracea L. var. italica) florets were stored in air”

✓ located verbatim in the source · abstract, characters 11–82 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Ethylene production did not differ among atmospheres.

Treatment
different atmospherese0
Outcome
ethylene productione0
Direction
N o differencese0
Comparator
different atmospherese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“N o differences were found in ethylene production among the different atmospheres”

✓ located verbatim in the source · abstract, characters 319–400 · show in text ↑
e1

“broccoli (Brassica oleracea L. var. italica)”

✓ located verbatim in the source · abstract, characters 11–55 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Low oxygen and high carbon dioxide similarly retained broccoli floret color at 10C.

Treatment
Low O 2 and high CO 2e0
Outcome
color of broccoli floretse0
Direction
retainede0
Comparator
aire1
Setting
10Ce0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Low O 2 and high CO 2 retained color of broccoli florets to about the same extent at 10C but had no effect at 0 and 5C”

✓ located verbatim in the source · abstract, characters 402–520 · show in text ↑
e1

“broccoli (Brassica oleracea L. var. italica) florets were stored in air”

✓ located verbatim in the source · abstract, characters 11–82 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The atmospheres had no color effect at 0 and 5C.

Treatment
Low O 2 and high CO 2e0
Outcome
color of broccoli floretse0
Direction
no effecte0
Comparator
aire1
Setting
0 and 5Ce0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Low O 2 and high CO 2 retained color of broccoli florets to about the same extent at 10C but had no effect at 0 and 5C”

✓ located verbatim in the source · abstract, characters 402–520 · show in text ↑
e1

“broccoli (Brassica oleracea L. var. italica) florets were stored in air”

✓ located verbatim in the source · abstract, characters 11–82 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Low oxygen or high carbon dioxide suppressed soft rot and browning.

Treatment
low O 2 or high CO 2e0
Outcome
Development of soft rot and browninge0
Direction
suppressede0
Comparator
aire1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Development of soft rot and browning was suppressed by low O 2 or high CO 2”

✓ located verbatim in the source · abstract, characters 522–597 · show in text ↑
e1

“broccoli (Brassica oleracea L. var. italica) florets were stored in air”

✓ located verbatim in the source · abstract, characters 11–82 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Off-odor occurred at 0.25% oxygen at all temperatures and 0.5% oxygen at 10C.

Treatment
0.25%02 at all temperatures and 0.5% O 2 at 10Ce0
Outcome
offensive off-odor occurrede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“offensive off-odor occurred in 0.25%02 at all temperatures and 0.5% O 2 at 10C”

✓ located verbatim in the source · abstract, characters 604–682 · show in text ↑
e1

“broccoli (Brassica oleracea L. var. italica)”

✓ located verbatim in the source · abstract, characters 11–55 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors favor 0.5% oxygen and 10% carbon dioxide at 0 and 5C.

Outcome
0.5% O 2 and 10% CO 2 at 0 and 5Ce0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the best O 2 and CO 2 levels seem to be 0.5% O 2 and 10% CO 2 at 0 and 5C”

✓ located verbatim in the source · abstract, characters 712–785 · show in text ↑
e1

“broccoli (Brassica oleracea L. var. italica)”

✓ located verbatim in the source · abstract, characters 11–55 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors favor 1% oxygen and 10% carbon dioxide at 10C.

Outcome
1% O 2 and 10% CO 2 at 10Ce0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“and 1% O 2 and 10% CO 2 at 10C”

✓ located verbatim in the source · abstract, characters 787–817 · show in text ↑
e1

“broccoli (Brassica oleracea L. var. italica)”

✓ located verbatim in the source · abstract, characters 11–55 · show in text ↑

co2 · physiology: respiration · Brassica oleracea (wild cabbage)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

1 paper in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
See all 3 papers →

co2 · disease · Brassica oleracea (wild cabbage)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

6 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. positive
  3. negative

4 papers more in this group

See all 8 papers →

co2 · quality: postharvest · Brassica oleracea (wild cabbage)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 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.