Abstract
Abstract Brussels sprouts ( Brassica oleracea L., Group gemmifera ) were stored 2, 3, or 4 weeks at 2.5°, 5°, or 7.5°C with 0.5%, 1%, 2%, 4%, or 21% O 2 , or in the following combinations of % O 2 /%CO 2 : 1/10, 2/10, or 20/10. Storage was followed by 2 or 3 days of aeration at 10°. Low O 2 levels reduced the rate of CO 2 production relative to that in air, but rates were similar among the low O 2 levels. Ethylene production was low at 2.5° and 5° in all atmospheres, but at 7.5° it was 20% to 170% higher in air than in low O 2 . Ethylene production was virtually stopped during exposure to high CO 2 , but increased dramatically during aeration. Since low O 2 levels retarded yellowing and 10% CO 2 retarded decay development, the combinations of low O 2 /high CO 2 effectively extended the storage life of the sprouts at 5° and 7.5°. The beneficial effect of CA storage was still evident after return of the samples to normal air. The sprouts retained good appearance for 4 weeks at 2.5° whether stored in CA or in air. Storage in 0.5% O 2 occasionally induced a reddish-tan discoloration of the heart leaves and frequently an extremely bitter flavor in the nongreen portion of the sprouts. None of the atmosphere modifications appreciably affected either the tissue pH or texture of the sprouts.
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Claims 14
Claim · model-written summary
Low oxygen reduced carbon dioxide production relative to air.
- Taxon
- Brussels sprouts
Brassica oleracea var. gemmiferat0 - Treatment
- Low O 2 levelse0
- Outcome
- rate of CO 2 productione0
- Direction
- reducede0
- Comparator
- aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low O 2 levels reduced the rate of CO 2 production relative to that in air”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Carbon dioxide production rates were similar among low oxygen levels.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- ratese0
- Direction
- similare0
- Comparator
- low O 2 levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rates were similar among the low O 2 levels”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Ethylene production was low at 2.5° and 5° in all atmospheres.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- Ethylene productione0
- Direction
- lowe0
- Qualifier
- 2.5° and 5° in all atmospherese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene production was low at 2.5° and 5° in all atmospheres”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
At 7.5°, ethylene production was 20% to 170% higher in air than low oxygen.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Treatment
- aire0
- Outcome
- ite0
- Direction
- highere0
- Value
- 20% to 170%e0
- Qualifier
- 7.5°e0
- Comparator
- low O 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 7.5° it was 20% to 170% higher in air than in low O 2”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
High carbon dioxide virtually stopped ethylene production.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Treatment
- high CO 2e0
- Outcome
- Ethylene productione0
- Direction
- virtually stoppede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene production was virtually stopped during exposure to high CO 2”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Ethylene production increased dramatically during aeration.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Treatment
- aeratione0
- Outcome
- Ethylene productione0
- Direction
- increased dramaticallye0
- Comparator
- high CO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene production was virtually stopped during exposure to high CO 2 , but increased dramatically during aeration”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Low oxygen retarded yellowing.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Treatment
- low O 2 levelse0
- Outcome
- yellowinge0
- Direction
- retardede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low O 2 levels retarded yellowing”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Ten percent carbon dioxide retarded decay.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Treatment
- 10% CO 2e0
- Outcome
- decay developmente0
- Direction
- retardede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10% CO 2 retarded decay development”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Low oxygen and high carbon dioxide extended sprout storage life at 5° and 7.5°.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Treatment
- low O 2 /high CO 2e0
- Outcome
- storage lifee0
- Direction
- extendede0
- Qualifier
- 5° and 7.5°e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combinations of low O 2 /high CO 2 effectively extended the storage life of the sprouts at 5° and 7.5°”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
The benefit of controlled atmosphere storage persisted after return to air.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- beneficial effect of CA storagee0
- Qualifier
- after return of the samples to normal aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The beneficial effect of CA storage was still evident after return of the samples to normal air”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Sprouts retained good appearance for four weeks at 2.5° in controlled atmosphere or air.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- good appearancee0
- Value
- 4 weekse0
- Qualifier
- 2.5° whether stored in CA or in aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sprouts retained good appearance for 4 weeks at 2.5° whether stored in CA or in air”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Storage at 0.5% oxygen occasionally caused heart-leaf discoloration.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Organ / stage
- heart leavese0
- Treatment
- 0.5% O 2e0
- Outcome
- reddish-tan discoloration of the heart leavese0
- Qualifier
- occasionallye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage in 0.5% O 2 occasionally induced a reddish-tan discoloration of the heart leaves”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Storage at 0.5% oxygen frequently caused extremely bitter flavor.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Treatment
- 0.5% O 2e0
- Outcome
- extremely bitter flavore0
- Qualifier
- frequentlye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage in 0.5% O 2 occasionally induced a reddish-tan discoloration of the heart leaves and frequently an extremely bitter flavor in the nongreen portion of the sprouts”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
Claim · model-written summary
Atmosphere modifications did not appreciably affect tissue pH or texture.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Treatment
- atmosphere modificationse0
- Outcome
- tissue pH or texturee0
- Direction
- Nonee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the atmosphere modifications appreciably affected either the tissue pH or texture of the sprouts”
t0“Brussels Sprouts”
t1“Brussels Sprouts”
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